Diane Millman is a principal in Powers Pyles Sutter & Verville's healthcare group.

Diane’s practice encompasses the full range of transactional and regulatory services; however, in recent years, she has focused primarily on the representation of physicians, ambulatory care providers, and professional and trade associations.

Diane represents these clients before the Centers for Medicare and Medicare Services and other federal agencies as well as before Congress on various Medicare and Medicaid payment, fraud and abuse, physician self-referral, and other issues arising under federal law. She also counsels these clients with respect to state law regulation, including state self-referral, fee-splitting, corporate practice of medicine, and similar issues.

In addition, Diane represents manufacturers and suppliers of new medical technology with regard to coding, coverage and reimbursement matters arising from the introduction of new healthcare technologies into the marketplace. She also works with clients on strategic planning, particularly as related to new product development.

Throughout the years, Diane has developed special expertise in the representation of various ambulatory care providers, including surgical centers, diagnostic imaging centers, and cancer centers. She has worked with physicians, hospitals, management companies, and other entities to establish both freestanding and hospital-based ambulatory care centers, including radiation oncology centers, diagnostic imaging centers, mobile testing facilities, and various other healthcare providers.

Practice Areas


J.D., cum laude, Harvard Law School, 1980

B.A., magna cum laude, Franklin and Marshall College, 1977

Bar Memberships

District of Columbia


Honors & Awards

The Best Lawyers in America®, Health Care Law, 2003 – 2023

Super Lawyers, 2013-2019

Memberships & Activities

Adjunct Professor, Health Care Law, Georgetown University Law Center