William Wertheim, M.D.
Internal Medicine Physician · East Setauket, NY
William Wertheim, M.D. is an internal medicine physician with a practice address in East Setauket, New York, and NPI 1174548200, issued on Jul 12, 2006. Check the license (New York 196934, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- William Wertheim
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 196934 NY
Self-reported in NPPES; status is on the state search - Practice location
- 205 N Belle Mead RD, East Setauket, NY 11733
- Phone
- (631) 444-4630
- Enumerated
- Jul 12, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 01506798 NY
- Medicare enrollment
- Enrolled (PECOS I20100317000127); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 205 N Belle Mead RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Wertheim 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 196934Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average internal medicine physician in 2024
844 Medicare Part D claims for 119 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium93 claims
- Amlodipine Besylate56 claims
- Losartan Potassium30 claims
- Metoprolol Succinate29 claims
- Omeprazole24 claims
- Lisinopril22 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.
The MIPS final score for 2023 (Medicare payment program): 98.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Stony Brook Internists University Faculty Practice CorporationStony Brook, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Wertheim among 12,067 internal medicine physician records in New York
William Wertheim, 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1989 · median 2002 among the 7,221 with a school on file
- Record last updated2007 · 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).
27 internal medicine physician records list a practice address in East Setauket
They are 27 of the 972 NPPES records with a practice address in East Setauket, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in East Setauket → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ibrahim Almasry, MDEast Setauket, NY 117331518953462
- David Goodrich, M.D.East Setauket, NY 117331508891235
- Donna Heinemann, M.D.East Setauket, NY 117331508891201
- Zeenat Hussain, MDEast Setauket, NY 117331548261076
- Diane Klein-Ritter, M.D.East Setauket, NY 117331053346767
- Anjani Kota, M.D.East Setauket, NY 117331720055353
- Susan LaneEast Setauket, NY 117331427083161
- Susan Lee, M.D.East Setauket, NY 117331295760874
Common questions
What is William Wertheim, M.D.'s NPI number?
William Wertheim, M.D.'s National Provider Identifier (NPI) is 1174548200, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Wertheim, M.D. located?
The NPPES record lists a practice address at 205 N Belle Mead RD, East Setauket, NY, 11733. Phone: (631) 444-4630. Providers update this record themselves, so call before visiting.
How can I verify William Wertheim, M.D.'s license?
NPPES lists New York license number 196934, 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 William Wertheim, M.D. prescribe under Medicare Part D?
In 2024, William Wertheim, M.D. had 844 Medicare Part D claims for 119 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is William Wertheim, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.