Internal Medicine in Williamsville, New York
Data updated monthly · Last refresh September 2026
65 Internal Medicine providers practice in Williamsville, and 48% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.
Internal Medicine providers in Williamsville
Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Renata Anand, M.D.Williamsville, NY · No drug or device payments recorded (2025) ·
(716) 961-9900 Dr. Richard Collins, MDWilliamsville, NY · $45 in drug and device payments (2025) ·
(716) 630-1018 Dr. Rosalba Mucciarella, MDWilliamsville, NY · $1,647 in drug and device payments (2025) ·
(716) 635-0688 Dr. Sameer Mamnoon, M.D.Williamsville, NY · $293 in drug and device payments (2025) · Telehealth ·
(716) 276-8726 Dr. Sanford Pleskow, MDWilliamsville, NY · No drug or device payments recorded (2025) ·
(716) 631-3555 Dr. Sarwat Khawar, MDWilliamsville, NY · No drug or device payments recorded (2025) ·
(716) 632-3535 Dr. Shannon Poupalos, M.D.Williamsville, NY · No drug or device payments recorded (2025) ·
(716) 630-1480 Dr. Shuman Hua, M.D.Williamsville, NY · $1,367 in drug and device payments (2025) · Telehealth ·
(716) 630-1037 Dr. Susan Szimonisz, MDWilliamsville, NY · $153 in drug and device payments (2025) · Telehealth ·
(716) 634-7350 Dr. Therese Caligiuri, M.D.Williamsville, NY · No drug or device payments recorded (2025) ·
(716) 568-3600 Dr. Thomas Drago, MDWilliamsville, NY · $267 in drug and device payments (2025) ·
(609) 585-1122 Dr. Timothy Heyden, M.D.Williamsville, NY · $115 in drug and device payments (2025) ·
(716) 634-1908 Dr. Tracy Chellino, ANPWilliamsville, NY · $28 in drug and device payments (2025) ·
(716) 458-0005 Dr. Vikas Singla, M.D.Williamsville, NY · No drug or device payments recorded (2025) · Telehealth ·
(716) 630-1143 Dr. William Hartrich, M.D.Williamsville, NY · $417 in drug and device payments (2025) ·
(716) 634-5410 Conditions Internal Medicine providers in Williamsville, New York commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Williamsville, New York?There are 65 Internal Medicine providers with active NPI records practicing in Williamsville, according to federal NPPES data refreshed monthly.
How many Internal Medicine providers in Williamsville received drug or device company payments?31 of 65 (48%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Internal Medicine providers in Williamsville treat?Internal Medicine providers in Williamsville commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
All specialties in Williamsville Internal Medicine across New York
