Tandigm Health Leadership

Derek Marshall is a Chief Operating Officer at Tandigm Health and is based in Conshohocken, Pennsylvania. He studied at University of Colorado Boulder.

Dr. Kenneth D. Goldblum is a Chief Medical Officer at Tandigm Health and is based in United States.

Charles “Lee” Buttz, MD is Tandigm Health’s Chief Medical Officer. In his role, Dr. Buttz is working to accelerate the adoption of value-based care and empower independent physician practices through clinical tools, technology, and population health management.

With his deep and personal knowledge of the needs of primary care physicians and their teams, Dr. Buttz has redesigned Tandigm Health’s care management program and recruited top-tier clinicians to head the company’s provider network transformation. He has been pivotal in strengthening Tandigm Health’s clinical team and sharpening its focus on evolving quality goals, helping providers across the Philadelphia region to provide the highest quality care at the lowest possible cost to improve the lives of more than 100,000 patients.

Dr. Buttz also created Tandigm Health’s utilization management department, expanded the company’s preferred provider network through contractual relationships in high-cost specialties, and developed an organizational strategic plan for behavioral health.

Before joining Tandigm Health in 2016, Dr. Buttz served as Medical Director of Utilization at Temple University Hospital, Client Medical Director at iHealth Technologies, and Medical Director at Cigna. Dr. Buttz began his medical career with the U.S. Army as a Clinic Commander and Chief of Primary Care and practiced family medicine at independent practices, where he held various leadership roles.

Keith Garthwaite is the Senior Vice President and CFO of Tandigm Health. He brings broad financial experience to Tandigm having held increasingly senior positions in the US and Europe across the healthcare spectrum.

Prior to joining Tandigm, Keith was Vice President, Business Analytics at GlaxoSmithKline (GSK). In this role he created a novel global analytics center of excellence for GSK’s $8B Consumer division.

Keith relocated from the UK to the US in ’06. Between ‘06 and ‘10 he was VP & Controller, GSK Consumer, playing a key role in the division’s industry-leading growth.

Prior to relocating to the US, Keith initially led the financial support of GSK’s UK Sales and Marketing teams before becoming Financial Controller of GSK’s Europe Region. Notable successes included the acquisition of Block Drug Inc., the launch of NiQuitin, Europe’s leading Smoking Cessation brand and the development of a global ERP platform.

Keith commenced his career with PwC in London. He is an Associate of the Institute of Chartered Accountants in England and Wales, and has a first class honors degree in Toxicology & Pharmacology from University College London.

Keith lives in Chester County with his wife and 3 children and is an accomplished triathlete.