Meet the Physicians

Meet the Physicians Group Picture

All of the physicians in our office are Board Certified/Eligible in Internal Medicine and are members of the staff at William Beaumont Hospital - Royal Oak. Our physicians are affiliated with several medical organizations, including: Michigan State Medical Society, Oakland County Medical Society, American Medical Association, and American College of Physicians. In the absence of your physician, care will be provided.

Please select:

Troy Internal Medicine, P.C.


Nurse Practitioner

Cindy Gerstenlauer, N.P.

UnaSource Comprehensive Weight Loss Clinic


Michael S. Doyle, M.D., M.P.H.
Karen Koenig Berris, M.D.
Barbara Ciesliga, M.D.

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