May 20, 2026 8:00am Notification: All office and center locations will be closed on Monday May 25th for Memorial Day. We will re-open on Tuesday May 26th.
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Medical Offices
Williamsville Wheatfield Orchard Park
Centers
Endoscopy Center of WNY, LLC Endoscopy Center of Niagara, LLC Endoscopy Center of WNY-Orchard Park- Opening 2026
Other Centers
Niagara Ambulatory Surgery Center Center for Ambulatory Surgery
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Our Physicians

Christopher J. Bartolone, M.D.

Christopher J. Bartolone, M.D.
Peter D. Bloom, M.D.

Peter D. Bloom, M.D.
Peter Fields, M.D.

Peter Fields, M.D.
Elizabeth Gregory, M.D.

Elizabeth Gregory, M.D.
Cory Higley, D.O.

Cory Higley, D.O.
Craig Keller, M.D.

Craig Keller, M.D.
Thomas Malikowski, M.D.

Thomas Malikowski, M.D.
Shahid Mehboob, M.D., FACG, FASGE

Shahid Mehboob, M.D., FACG, FASGE
Naima Mian, D.O.

Naima Mian, D.O.
Natalie Penn, M.D.

Natalie Penn, M.D.
John D. Picano, M.D.

John D. Picano, M.D.
Ognian Pomakov, M.D.

Ognian Pomakov, M.D.
Benjamin Schaus, D.O.

Benjamin Schaus, D.O.
Siddhartha S. Shah, M.D.

Siddhartha S. Shah, M.D.
Clark Zhang, M.D.

Clark Zhang, M.D.