Medical Specialty Listing

Internal Medicine Providers in Williamsville, NY

Browse 64 Internal Medicine providers listed in NPPES with a practice address in Williamsville, New York.

64 Healthcare Providers

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How Williamsville compares with the U.S.

64 active clinicians in Internal Medicine list a practice address in Williamsville, NY in the NPI registry.

Williamsville has fewer than 10,000 residents, so rates per 100,000 people change a lot with each clinician and are not compared here.

93% of clinicians in Internal Medicine in Williamsville listed in the CMS Medicare file (39 of 42) accept Medicare assignment. That is similar to the New York share of 91%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

31% of clinicians in Internal Medicine in Williamsville listed in the CMS Medicare file (13 of 42) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the New York share of 35%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com · Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File.

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Williamsville, NY

Source: CMS PECOS

PECOS Enrolled Specialists 51 In Williamsville, NY

Part B Lab & Imaging Eligible 54 Diagnostic Referrals

DME Ordering Eligible 55 Durable Medical Equipment

Home Health Agency Referrals 54 HHA Ordering Eligible

Showing 1–20 of 64 providers

With recent CMS data first, then A–Z

Dr. Renata Anand , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available

1020 Youngs Rd, Williamsville, NY 142212698

Phone: 7169619900

NPI Identifier 1568724888

Internal Medicine Providers in Williamsville, NY

How Williamsville compares with the U.S.

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Dr. Renata Anand , MD

Marissa Lynn Boniszewski

Dr. Harbind Singh Brar , MD

Dr. George Burnett , MD

Dr. Jeffrey O Burnett , DO

Dr. Therese Caligiuri , MD

Dr. Kapil Chatrath , MD

Tracy Lynn Chellino , ANP

John Hunter Cleary

Dr. Richard L Collins , MD

Dr. Kenyani Shareen Davis , MD

Dr. Luay Dawood , MD

Dr. Thomas John Drago , MD

Dr. Peter L Elkin , MD

Dr. Jorge Omar Flores Lopez , MD

Dr. Philip Fu , MD

Dr. Joseph Anthony Gualtieri , MD

Dr. John D Hall , MD

Dr. William Michael Hartrich , MD

Dr. Timothy Michael Heyden , MD

Frequently Asked Questions about Internal Medicine in Williamsville

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