Kim Blickenstaff
Mr. Blickenstaff has served as the Chairman of our board of directors since March 2020. Mr. Blickenstaff previously served as Executive Chairman of our board of directors since March 2019, and on our board of directors since September 2007. Mr. Blickenstaff also previously served as our President and Chief Executive Officer from September 2007 to March 2019. Prior to joining us, Mr. Blickenstaff served as Chairman and Chief Executive Officer of Biosite Incorporated, or Biosite, a provider of medical diagnostic products, from 1988 until its acquisition by Inverness Medical Innovations, Inc. in June 2007. Mr. Blickenstaff previously served as a director of Medivation, Inc., a biotechnology company, from 2005 to 2016, until its acquisition by Pfizer, and as a director of DexCom, Inc. (NASDAQ: DXCM), a provider of continuous glucose monitoring systems, from June 2001 to September 2007. Mr. Blickenstaff was formerly a certified public accountant and has more than 20 years of experience overseeing the preparation of financial statements. He holds a B.A. in Political Science from Loyola University, Chicago, and an M.B.A. from the Graduate School of Business, Loyola University, Chicago.

Dick Allen 
Mr. Allen has served as lead independent director since March 2019 and on our board of directors since July 2007. He previously served as the Company's Chairman from August 2007 to January 2013 and from January 2016 to February 2019. Mr. Allen is engaged directly in the diabetes community through his personal involvement with JDRF and the Mary & Dick Allen Diabetes Center at Hoag Memorial Hospital Presbyterian. Mr. Allen served as a member of the International Board of Directors of JDRF from July 2008 to June 2014 and as Chairman from July 2012 to June 2014. Mr. Allen has more than 50 years of experience in the health care industry and was previously the President of DIMA Ventures, Inc., a private investment firm providing seed capital and board-level support for start-up companies in the healthcare field. He was a co-founder and Vice President of Caremark, Inc., a home infusion therapy company that was later acquired by Baxter International. He was also a co-founder and director of Pyxis Corporation that was later acquired by Cardinal Health, Inc. Mr. Allen received a B.S. (cum laude) from Yale University and an M.B.A. from Stanford University Graduate School of Business where he served on the faculty as a Lecturer in Strategic Management for thirteen years. 

Peyton Howell
Peyton Howell joined our board of directors in August 2020. Ms. Howell has more than 25 years of extensive reimbursement, health insurance, and patient access experience across a broad range of disease states in the hospital, physician, pharmacy and home care settings. Ms. Howell is currently the Chief Commercial and Strategy Officer at Parexel International, a leading global clinical research organization servicing the life sciences industry. Prior to joining Parexel, Ms. Howell held a wide range of senior leadership positions at AmerisourceBergen, including leading Global Sourcing and Manufacturer Relations and advancing specialty and biotech products and solutions for physicians, health systems and specialty pharmacies. She was a founder and President of Lash Group, a patient support services company, and an early pioneer of programs to support patient access, reimbursement, and adherence to new therapies including services related to diabetes, such as patient assistance and reimbursement support for continuous glucose monitors. Ms. Howell is a recognized national speaker on health policy, patient access and reimbursement issues. She has served as Director of the AmerisourceBergen Foundation, the National Association of Chain Drug Stores Foundation, and the Healthcare Distribution Alliance Foundation. Ms. Howell received a B.A. in Speech Communication from The University of Illinois at Urbana-Champaign and a Master’s of Health Administration from The Ohio State University.

Kathy McGroddy-Goetz, Ph.D
Dr. McGroddy-Goetz has served on our board of directors since June 2020. She has more than 25 years of experience leading global teams across business development, strategy, research and development, and product management. She has commercialized pioneering technologies spanning from microelectronics through cloud, advanced data analytics, AI, hardware, software, and middleware with an emphasis on healthcare and life sciences applications. Dr. McGroddy-Goetz has served as the Global Head of Strategic Partnerships at Medidata Solutions, a Dassault Systemès Company, since October 2018 where she has also concurrently held other strategy, alliances and marketing executive roles. Previously, she held various leadership positions at IBM beginning in 1992, and most recently was Vice President, Strategy and Innovation, IBM Watson Health. Dr. McGroddy-Goetz received a B.S. in Physics from SUNY Binghamton and a Ph.D. in Molecular Biophysics from Cornell University.

John Sheridan
John Sheridan has served as our President and Chief Executive Officer since March 2019 and as a member of our Board of Directors since June 2019. He previously served as our Executive Vice President and Chief Operating Officer since April 2013. Prior to joining our company, Mr. Sheridan served as Chief Operating Officer of Rapiscan Systems, Inc., a provider of security equipment and systems, from March 2012 to February 2013. Mr. Sheridan served as Executive Vice President of Research and Development and Operations for Volcano Corporation (NASDAQ: VOLC), a medical technology company, from November 2004 to March 2010. From May 2002 to May 2004, Mr. Sheridan served as Executive Vice President of Operations at CardioNet, Inc., a medical technology company. From March 1998 to May 2002, he served as Vice President of Operations at Digirad Corporation, a medical imaging company. Mr. Sheridan holds a B.S. in Chemistry from the University of West Florida and an M.B.A. from Boston University.

Rebecca Robertson
Ms. Robertson has served on our board of directors since January 2019. Ms. Robertson is a founder and has served as Managing Director of Versant Ventures, where she specializes in medical devices and diagnostics, since November 1999. In addition, through Longridge Business Advisors, she has provided business advisory and board services since April 2017. Ms. Robertson served as a general partner at Institutional Venture Partners (IVP), where she was an investor in the life sciences group, from July 1997 to October 1999. Prior to that, Ms. Robertson served as senior vice president at Chiron Diagnostics, a division of Chiron Corporation, where she had responsibility for the critical care business unit in addition to leading the division’s business development efforts. Ms. Robertson was also previously an entrepreneur in residence for IVP in the life sciences group, a co-founder and Vice President at Egis, a consumer products company, and held senior management positions in operations and finance at Lifescan, a Johnson & Johnson Company. Ms. Robertson holds a B.S. in chemical engineering from Cornell University.

Douglas Roeder
Mr. Roeder has served on our board of directors since May 2009. Mr. Roeder joined Delphi Ventures as an Associate in 1998, and has been a Partner since 2000, focusing on medical devices, diagnostics and biotechnology. Prior to joining Delphi Ventures, Mr. Roeder was an Associate with Alex Brown’s Healthcare Investment Banking Group in San Francisco, where he focused on the medical device, life sciences and healthcare services industries. Mr. Roeder serves as a director of Senseonics Holdings, Inc. (NYSE-MKT:SENS), a continuous glucose monitoring company, and several privately held companies. He previously served as a director of Trivascular Technologies, Inc., a medical device company, which was acquired by Endologix, Inc. (NASDAQ: ELGX) in February 2016. He also previously worked with Putnam Associates, a strategy consulting firm focused on the pharmaceutical and biotechnology industries. Mr. Roeder holds an A.B. in Biochemistry from Dartmouth College.

Raj Sodhi
Mr. Sodhi has served on our board of directors since January 2021. He has more than 25 years of experience in global informatics, software service technology and ecommerce business solutions, across the healthcare, financial, and telecom industries. Mr. Sodhi has served as the president of ResMed’s software as a service (SaaS) business since July 2017. He was previously ResMed’s president of Healthcare Informatics (HI) leading the development of ResMed’s HI solutions and ResMed itself to its current standing as a global digital health leader, with an expanding portfolio of device- and SaaS-based offerings. He joined ResMed in 2012 through the acquisition of Umbian Inc. of which he was co-founder and president. Before ResMed and Umbian, Raj worked in the financial services industry, designing, developing and managing SaaS solutions. He was senior vice president of Business Development and chief technology officer for Skipjack Financial Services from 2005 to 2009, and co-founder and chief technology officer of TransActive Ecommerce Solutions from 2000 to 2005. Raj holds a Master of Business Administration and a Bachelor of Science in mathematics and statistics from Dalhousie University in Halifax, Nova Scotia.

Christopher Twomey
Mr. Twomey has served on our board of directors since July 2013. From March 1990 until his retirement in 2007, Mr. Twomey held various positions with Biosite, most recently serving as Senior Vice President, Finance and Chief Financial Officer. From 1981 to 1990, Mr. Twomey worked for Ernst & Young LLP, where he served as an Audit Manager. Mr. Twomey has also served as a director of Senomyx, Inc. (NASDAQ: SNMX), a flavor technology company, since March 2006 and is chair of that company’s audit committee. Mr. Twomey also served as a director and chair of the audit committee of Cadence Pharmaceuticals, Inc., from July 2006 until it was acquired by Mallinckrodt plc in March 2014. Mr. Twomey holds a B.A. in Business Economics from the University of California, Santa Barbara.

John Sheridan
President and Chief Executive Officer
John Sheridan has served as our President and Chief Executive Officer since March 2019. He previously served as our Executive Vice President and Chief Operating Officer since April 2013. Prior to joining our company, Mr. Sheridan served as Chief Operating Officer of Rapiscan Systems, Inc., a provider of security equipment and systems, from March 2012 to February 2013. Mr. Sheridan served as Executive Vice President of Research and Development and Operations for Volcano Corporation (NASDAQ: VOLC), a medical technology company, from November 2004 to March 2010. From May 2002 to May 2004, Mr. Sheridan served as Executive Vice President of Operations at CardioNet, Inc., a medical technology company. From March 1998 to May 2002, he served as Vice President of Operations at Digirad Corporation, a medical imaging company. Mr. Sheridan holds a B.S. in Chemistry from the University of West Florida and an M.B.A. from Boston University.

David Berger
Executive Vice President, Chief Business Operations & Compliance Officer
David Berger has served as our Executive Vice President, Chief Business Operations and Compliance Officer since November 2020 and is responsible for the Company’s legal, quality, regulatory and customer technical support functions. He previously served as Executive Vice President, Chief Legal and Compliance Officer since April 2019, and as Executive Vice President and General Counsel, having overseen the legal department since August 2013. Prior to joining Tandem, he served as Senior Vice President, General Counsel and Corporate Secretary at Senomyx, Inc., which he joined in 2008. His prior experience includes serving as Vice President, Legal Affairs at Biosite Incorporated, where he was the managing attorney responsible for all commercial aspects of legal affairs, and serving as an attorney with Cooley Godward LLP. Mr. Berger received his J.D. at Stanford Law School and a B.A. in Economics from the University of California, Berkeley.

Jeff Brown
Vice President, Program Management
Jeff Brown joined us as Vice President, Program Management in November 2020. Jeff brings more than 20 years of cross-functional project and program management experience across a number of industries, including digital health and life sciences.  In his most recent roles at Capsule Technologies and Qualcomm Life, he held senior leadership positions developing and leading project management teams with a focus on execution process excellence.  Prior to this, Mr. Brown served as the Senior Director of Programs at Qualcomm where he led the telecom products and services, transportation telematics and mobile chipset and software development project management offices.  He began his career at Intel Corporation where he held numerous positions spanning supply chain, quality and reliability engineering, and Project Management.  Mr. Brown is a certified Project Management Professional and holds a B.S. in Electrical Engineering from the University of Washington.

Michael Fechko
Vice President, Manufacturing Operations
Michael Fechko was appointed VP of Manufacturing Operations in September 2019 with more than 20 years of experience in manufacturing and engineering in the medical device and semiconductor industries. He previously served as Senior Director of Manufacturing, following serving in successive roles in operations at Tandem since 2011. Prior to joining Tandem, Mr. Fechko was the Senior Manager of Manufacturing Engineering and Facilities at Volcano Corporation. He began his career at NEC Electronics. Mr. Fechko holds a B.S. in Mechanical Engineering from California State University, Chico.

Tom Fox
Senior Vice President, Human Resources and Organizational Development
Tom Fox was appointed Vice President, Human Resources in August 2017. He previously served as Senior Director of our Human Resources Department. Mr. Fox has more than 20 years of experience in Human Resources management.  Prior to joining Tandem, Mr. Fox served as Director of Human Resources for the Oncology-Genoptix Division of Novartis Pharmaceuticals.  Before that, he held various HR leadership positions including Director of Human Resources for the West Division of BDO, USA LLP; Director of HR Client Services for Option One Mortgage Company (a subsidiary of H&R Block Corp.) and Director of Labor and Employee Relations at The Walt Disney Company, Disneyland Resort. Mr. Fox began his career at Chevron Corporation and holds a B.S. in Business Administration from California State University, Fresno and a M.S. in Labor Relations and Human Resources Management from Michigan State University.

Elizabeth Gasser
Executive Vice President, Strategy and Corporate Development
Elizabeth Gasser was appointed Executive Vice President Strategy and Corporate Development in January 2020. She previously worked as an independent advisor providing strategic and corporate development solutions to boards and executive teams. Prior to this, Ms. Gasser was VP of Corporate Strategy at Qualcomm Technologies, Inc. where she worked from July 2006 to June 2017. Ms. Gasser has over 20 years of strategy and transaction experience, with an emphasis on developing and leading market entry and growth strategies for connected ecosystems and data-driven businesses. Ms. Gasser holds a B.A. and M.A. in Economics from the University of Cambridge.

Stephanie Habif
Vice President, Behavioral Sciences
Stephanie Habif was appointed Vice President, Behavioral Sciences in August 2020. She previously served as our Senior Director of Behavioral Sciences and has overseen the department since December of 2017. Dr. Habif has more than 20 years of experience as a behavioral scientist, leading healthcare teams in the design of consumer engagement to improve outcomes. Prior to joining Tandem, Dr. Habif split her time between industry and academia – most recently as Senior Strategist at The Design Lab UC San Diego, an institute focused on providing research, education and community interaction to advance best practices in human-centered design. She has held faculty appointments at several universities including Stanford, Columbia, and Victoria University of Technology in Australia. Dr. Habif is the founder of Habif Health and Performance LLC, a consulting firm specializing in research, design and strategy for consumer healthcare technologies. Dr. Habif holds a Bachelor of Arts in English Literature and Psychology from Washington University in St. Louis, a Master of Science in Counseling Psychology from Springfield College as well as a Doctor of Education in Health and Behavior Studies from Columbia University.

Brian Hansen
Executive Vice President and Chief Commercial Officer
Brian Hansen joined us as our Executive Vice President & Chief Commercial Officer in February 2016 with more than 20 years of sales and leadership experience in the clinical diagnostics industry. Prior to joining Tandem, Mr. Hansen was Chief Commercial Officer at Adaptive Biotechnologies Corporation. Before that, he held executive and senior-level positions at Genoptix (a Novartis-owned company), Gen-Probe (acquired by Hologic in 2012) and Fischer Scientific. Mr. Hansen received an MBA from the School of Business at San Diego State University and a B.S. in Business Administration from the University of Missouri – Columbia. 

Manuel Jaime
Senior Vice President, Technology and Digital Health
Manuel Jaime joined us as our Senior Vice President, Technology and Digital Health in February 2019 with more than 20 years of experience in incubating and commercializing emerging products and services in the high-tech industry. Prior to joining Tandem, Mr. Jaime was Chief Technology Officer at Cedar Electronics. Before that, he was a co-founder and Chief Executive Officer of ClipCast Technologies, and he previously held various roles at CardioNet and Qualcomm. He also is an inventor on more than 20 patents relating to connected devices, wireless systems, video platforms, and low-power radio frequency. Mr. Jaime is a graduate of the Leaders for Global Operations (LGO) Program at the Massachusetts Institute of Technology (MIT) Sloan School of Management where he received an MBA and a MS in Mechanical Engineering. He also holds a BS in Mechanical Engineering and a MS in Systems Engineering from MIT.

Josh Juster
Vice President, Sugarmate
Josh Juster joined us in June 2020 as Vice President of Sugarmate. He previously founded and developed the Sugarmate app, a comprehensive tool for people with diabetes using continuous glucose monitors. Mr. Juster has more than 15 years of experience designing and developing websites and applications. He was Co-founder and Chief Product Officer of GoTime, which created a popular mobile app and data platform, and was acquired by Infogroup, a leading business data provider. Mr. Juster began his career at Microsoft as a Program Manager. He holds a Bachelor of Science and Master of Engineering in Computer Science from the Massachusetts Institute of Technology.

Julia Kensick
Vice President, Quality
Julia Kensick was appointed Vice President, Quality in August 2017. She previously served as Senior Director of Quality and has overseen the department since September of 2013. Ms. Kensick has more than 25 years of experience in quality, regulatory and customer affairs.  Prior to joining Tandem, Ms. Kensick served as Director of Quality for the Infusion Business Unit of CareFusion. Before that, she held positions including Executive Director of Regulatory and Customer Affairs for Ophthonix and Quality Assurance Director at American Medical Systems (Formerly CryoGen Inc.). Ms. Kensick began her career in the Vascular Intervention Group at Guidant and holds a Bachelor of Science in Mechanical Engineering from San Diego State University. 

Arun Kumar
Vice President, Supply Chain
Arun Kumar joined us as Vice President, Supply Chain in August 2019. He has broad executive experience in supply chain, service, and customer operations at companies such as Dexcom, Amazon, Dell, and FedEx. In his most recent roles at Dexcom and Stella & Dot he had global responsibility for warehousing, logistics, and distribution. From 2003 to 2009, he was Executive Director of Global Operations, Logistics, and Fulfillment at Dell, Inc. In his role as Managing Director at FedEx, from 1995 to 2000, he had responsibility for the Indian subcontinent in Mumbai, India, as well as for National Hub Operations, in Memphis, Tennessee. Mr. Kumar holds a master's degree in mechanical engineering from Old Dominion University.

Jim Leal
Senior Vice President, Operations
Jim Leal has served as our Senior Vice President, Operations since August, 2017. Mr. Leal joined Tandem in October 2010 as Vice President, Operations bringing 25 years of manufacturing and engineering experience. Previously, Mr. Leal was the Vice President of Manufacturing and Field Support for Volcano Corporation and held Director Roles with CardioNet, Inc. and Digirad Corporation. He held Senior Engineering roles with FlipChip Technologies and Hughes Aircraft Company. Jim has won several awards including a Hughes Aircraft Doctoral and Masters Fellowship and was a recognized nominee for Most Promising Hispanic Engineer of the Year Award. Mr. Leal is a published author and patent holder. He is a University of Arizona graduate with a Ph.D. in Materials Science and Engineering.

Michael Michaud
Vice President, Research and Development
Michael Michaud was appointed VP of Research and Development in September 2019 with more than 10 years of engineering experience in the medical device industry. He previously served as Senior Director of Research and Development, following serving in successive R&D roles at Tandem since 2009. Prior to joining the Company, Mr. Michaud was a research and development engineer for Trimedyne, Inc. and before that was product development engineer for Applied Medical. Mr. Michaud holds a B.S. in Mechanical Engineering from the University of Michigan.

Susan Morrison
Executive Vice President and Chief Administrative Officer
Susan Morrison was appointed Chief Administrative Officer in September 2013. She previously served as our Vice President, Human Resources, Corporate and Investor Relations since April 2013. Ms. Morrison served as our Director, Corporate and Investor Relations, from January 2009 to March 2013, and was our Director, Corporate Services from November 2007 to December 2008. Prior to joining our company, Ms. Morrison held various positions in Corporate and Investor Relations at Biosite from August 2003 through November 2007. Ms. Morrison holds a B.A. in Public Relations from Western Michigan University.

Dave Nuttall
Vice President, Finance
Dave Nuttall joined us in July 2019 as our Vice President of Finance, bringing with him over 30 years of medical device business experience. Prior to Tandem, Dave spent 13 years with Philips Healthcare as the Head of Finance, Therapeutic Care Division. Previously, Mr. Nuttall held finance-related executive roles in the Respiratory Care Division of Medtronic. In his 18 years with the company, he also led M&A activities and worked in operations. Mr. Nuttall holds a bachelor’s degree in accounting from Fort Lewis College.

Karrie Rexford
Vice President and General Counsel
Karrie Rexford was appointed Vice President and General Counsel in July 2020. Ms. Rexford has more than 20 years of corporate legal experience with expertise in medical device, software and technology licensing, intellectual property, clinical, development, retail, manufacturing, real estate, and global commercial transactions. Prior to joining Tandem, Ms. Rexford worked for Align Technology, Inc. for 16 years initially as Associate General Counsel of Strategic Commercial Transactions and then as Vice President Global Associate General Counsel, Direct to Consumer. Align is a global medical device company delivering clear aligner orthodontic and restorative treatments. She began her career in Silicon Valley working for the law firm of Wilson Sonsini Goodrich & Rosati and also held positions with several software companies including Netscape Communications Corporation, Sun Microsystems, Inc. and LoudCloud, Inc. She received her J.D. at Lincoln Law School and a B.A. from California Polytechnic San Luis Obispo.

Peter Rossiter
Vice President, Information Technology
Peter Rossiter joined us as Vice President of Information Technology in May 2020 with more than 30 years of IT experience domestically and abroad. He previously worked as an independent advisor creating technology and data strategies to drive digital transformation for Fortune 500 companies. Prior to this, he held various executive leadership positions with Honeywell, where he most recently was VP of Digital Offerings. Mr. Rossiter holds a bachelor’s degree in chemical engineering from the University of Sydney in Sydney, Australia.

Christina Sun
Vice President, Corporate Controller
Christina Sun joined us as Vice President, Corporate Controller in March 2020. Prior to this, she served as Corporate Controller at NeoGenomics, Inc. beginning in May 2017. Ms. Sun originally joined Tandem in October 2013 where she most recently served as Director of Accounting and SEC Reporting. Ms. Sun has 15 years of experience as a certified public accountant. She began her career at Ernst & Young, LLP where she ultimately served as a Senior Manager of Assurance Services. Ms. Sun holds a Master of Science in Accountancy from San Diego State University.

Ross Sylvia
Vice President, Marketing
Ross Sylvia joined us as our Vice President, Marketing and Product Management in April 2019, bringing with him more than 15 years of experience as an executive in the medical device, health sciences, and biotechnology industries. Prior to joining Tandem, Mr. Sylvia was Global Vice President, Thoracolumbar Fixation and Pediatrics at San Diego-based NuVasive, a medical device company focused on developing innovative surgical products and solutions for spine surgery. Mr. Sylvia has held a variety of leadership positions in product management, market development, marketing, and sales at NuVasive, K2M, Inc., and Johnson & Johnson. Mr. Sylvia holds a B.S. in marketing and computer information systems from Bryant University.

Leigh Vosseller
Executive Vice President and Chief Financial Officer
Leigh Vosseller was appointed Executive Vice President and Chief Financial Officer effective January 1, 2018. Previously, Ms. Vosseller served as our Senior Vice President, Finance from August 2017. Ms. Vosseller joined Tandem in August 2013 as Vice President, Finance. Prior to joining Tandem, Ms Vosseller served in various senior finance positions in the healthcare industry. Most recently, she was Vice President and CFO of Genoptix, Inc. (a Novartis company). Prior to that she held a senior finance position at Biosite Incorporated where she played a key role in developing the financial and administrative infrastructure for international expansion. Ms. Vosseller is a certified public accountant (inactive) and holds a bachelor’s degree in accounting from Missouri State University.