Troyen A. Brennan, M.D., M.P.H., is Executive Vice President and Chief Medical Officer of CVS Health. In this role, Brennan has responsibility for CVS Health’s health care and wellness programs.


Previously, he was Chief Medical Officer of Aetna Inc. Prior to that, Dr Brennan served as President of the Brigham and Women’s Physicians Organization. In his academic work, he was Professor of Medicine at Harvard Medical School and Professor of Law and Public Health at Harvard School of Public Health.


Dr Brennan received his M.D. and M.P.H. degrees from Yale Medical School and J.D. degree from Yale Law School. He completed his internship and residency in internal medicine at Massachusetts General Hospital. He is a member of the Institute of Medicine of the National Academy of Sciences.


Recent Posts by Troyen Brennan

Pharmacy Benefit Management Of Opioid Prescribing: The Role Of Employers And Insurers

In the last two decades, prescribing rates for opioids have increased nearly three-fold, from 76 million prescriptions in 1991 to approximately 207 million prescriptions in 2013.  This remarkable volume of opioid prescribing is unique to the United States, where 2015 prescribing amounts were...

Can Employers Take A Bigger Role In Controlling Drug Costs?

Employees and employers alike continue to suffer from ‘sticker shock’ for prices for new drugs. While considerable attention has been paid to potential actions by Medicare or the FDA, there has been less focus on the role of private payers to solve the issue.

In The Debate About Cost And Efficacy, PCSK9 Inhibitors May Be The Biggest Challenge Yet

The American health care system is far and away the most costly in the world. Health care reform is intended to lower costs, but they are still rising, albeit less steeply than in the past. Moderation is not however the case in the area of specialty pharmacy. The medications to treat Hepatitis...

Integrity In Retail Health Care: Rethinking The Sale Of Tobacco Products

Retail health care is a relatively new development in American health care.  It is true that much of the dispensing of medications has historically occurred through retail pharmacies, which sold a variety of other goods and services, but somehow that was not seen as the provision of health...

Correcting The Blind Spot In Accountability: The Role Of Pharmacy Care

Editor's note: In addition to William Shrank, this post is also coauthored by Andrew Sussman, Patrick Gilligan, and Troyen Brennan. The Centers for Medicare and Medicaid Services (CMS) recently issued a Request for Information (RFI) to solicit suggestions about how to improve the Accountable...

Risk-Shifting In Health Care And Its Implications: Part Two

Yesterday, in the first installment of a two-part Health Affairs Blog post, Troyen Brennan and Thomas Lee discussed the shifting of risk they see taking place in the health care system, from insurers and employers to provider and patients. In part two below, Brennan and Lee discuss the...

Risk-Shifting In Health Care And Its Implications: Part One

Editor’s Note: Below, in the first installment of a two-part Health Affairs Blog post, Troyen Brennan and Thomas Lee discuss the shifting of risk they see taking place in the health care system, from insurers and employers to provider and patients. In part two tomorrow, Brennan and Lee...