Zachary R. Williams, M.D.
Internal Medicine Physician · Rochester, NY
Zachary R. Williams, M.D. is an internal medicine physician with a practice address in Rochester, New York, and NPI 1134372584, issued on Oct 29, 2008. Check the license (New York 258290, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Zachary R. Williams
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 258290 NY
80040 AZ
036178168 IL
7154790-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 310 Exchange Blvd Apt 330, Rochester, NY 14608
- Phone
- (801) 455-4581
- Enumerated
- Oct 29, 2008
- Record last updated
- Apr 2, 2026
- Medicaid IDs
- 818682 AZ
03352949 NY - Medicare enrollment
- Enrolled (PECOS I20210119000315); accepts Medicare assignment
- Medical or professional school
- University Of Utah School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Verify Zachary R. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 258290Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,125 Medicare Part D claims for 440 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Eliquis196 claims
- Metoprolol Succinate165 claims
- Atorvastatin Calcium152 claims
- Amlodipine Besylate151 claims
- Carvedilol127 claims
- Losartan Potassium95 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $285.88
7 payments; by number, the most common kind was food and beverage; the largest payer was Neurocrine Biosciences, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Fairview Heights Medical Group SCBelleville, IL
- Garfield CountyPanguitch, UT
- Ihc Health Services IncMesquite, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary R. Williams among 12,067 internal medicine physician records in New York
Zachary R. Williams, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 40% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2007 · median 2002 among the 7,221 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
504 internal medicine physician records list a practice address in Rochester
They are 504 of the 20,520 NPPES records with a practice address in Rochester, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Rochester → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nancy Bennett, MDRochester, NY 146071861747834
- Craig Benson, M.D.Rochester, NY 146091336267376
- Todd Bingemann, M.D.Rochester, NY 146091346227311
- Heather Busick, M.D.Rochester, NY 146091023374196
- Enrico Caiola, M.D.Rochester, NY 146091043252406
- Carl Cameron, M.D.Rochester, NY 146071669550828
- Cecile Carson, CECILE CARSON, MDRochester, NY 146071568663656
- Stephen Cohen, M.D.Rochester, NY 146071679500458
Common questions
What is Zachary R. Williams, M.D.'s NPI number?
Zachary R. Williams, M.D.'s National Provider Identifier (NPI) is 1134372584, issued on Oct 29, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Zachary R. Williams, M.D. located?
The NPPES record lists a practice address at 310 Exchange Blvd Apt 330, Rochester, NY, 14608. Phone: (801) 455-4581. Providers update this record themselves, so call before visiting.
How can I verify Zachary R. Williams, M.D.'s license?
NPPES lists New York license number 258290, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Zachary R. Williams, M.D. prescribe under Medicare Part D?
In 2024, Zachary R. Williams, M.D. had 2,125 Medicare Part D claims for 440 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.