Tristan Medical Care Centers
Physicians & Staff
Dr. Ryan Welter, MD, PhD
Dr. Ryan Welter
Family Medicine
Dr. Brett Stecker, D.O., FAAFP
Dr. Brett Stecker
Family Medicine
Dr. Sharon Mahoney, MD
Dr. Sharon Mahoney
Internal Medicine
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Dr. Paul Keefe
Internal Medicine
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Dr. G. Curtis Barry
Family Medicine
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Dr. Yvonne Rizk
Pathology
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Join Our Team of World-Class Medical Professionals

Interested in joining a dynamic group of physicians, nurse practitioners, and physician assistants?

Terri Sulivan FNP-C
Terri A. Sullivan
Nurse Practitioner
Leah Callan, ANP-BC
Leah Callan
Nurse Practitioner
Tracie Washburn, NP
Tracie Washburn
Nurse Practitioner
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Susan Wareing
Nurse Practitioner
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Dennis Loura
Nurse Practitioner
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Erica Ahaesy
Nurse Practitioner
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Jacquelyn Desjardins
Physician Assistant
Brendan Ryan, PA-C, MPAS
Brendan Ryan
Physician Assistant
Catherine Collins, PA-C
Catherine Collins
Physician Assistant
Geraldine Matteson, PA-C
Geraldine Matteson
Physician Assistant
Jennifer Barton, PA-C
Jennifer Barton
Physician Assistant
Kristin O'Hara, PA-C
Kristin O'Hara
Physician Assistant
Rinabahen Patel, PA-C
Rinabahen Patel
Physician Assistant
Sheldon Ehrenzweig, PA-C
Sheldon Ehrenzweig
Physician Assistant
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Emily Eynatian
Physician Assistant
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Rose Zolnierz
Physician Assistant
We want you
Medical Professional