NPPES file of Aug 9, 2026

Bruce R. Weinstein, M.D.

Internal Medicine Physician · Worcester, MA

Bruce R. Weinstein, M.D. is an internal medicine physician with a practice address in Worcester, Massachusetts, and NPI 1144204694, issued on Nov 30, 2005. Check the license (Massachusetts 51424, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1144204694
Name
Bruce R. Weinstein
Credential
M.D.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
51424 MA
Self-reported in NPPES; status is on the state search
Practice location
55 Lake Ave N, Worcester, MA 01655
Phone
(508) 856-3912
Enumerated
Nov 30, 2005
Record last updated
Oct 28, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicaid ID
6195059 MA
Medicare enrollment
Enrolled (PECOS I20050328000602); accepts Medicare assignment
Medical or professional school
State University Of New York Downstate Medical Center, 1980
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →

Also registered at 55 Lake Ave N

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nawal Aamir, MDInternal Medicine Physician1588248926
  2. Amarys Abadie, CRNACertified Registered Nurse Anesthetist1992936843
  3. Paula Abate, NPNurse Practitioner1336265909
  4. Aly AbayazeedDiagnostic Radiology Physician1821221946
  5. Zainab AbbasDermatology Physician1609028000
  6. Mary-Alice Abbott, MDClinical Genetics (M.D.) Physician1982799417

Verify Bruce R. Weinstein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 51424    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

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15% fewer Medicare Part D claims than the average internal medicine physician in 2024

2,707 Medicare Part D claims for 322 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 101 claims were for opioids.

  1. Bruce Weinstein2,707
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium203 claims
  2. Amlodipine Besylate123 claims
  3. Omeprazole102 claims
  4. Lisinopril-Hydrochlorothiazide98 claims
  5. Rosuvastatin Calcium95 claims
  6. Metoprolol Succinate92 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.

Bills Medicare through one group practice

  1. Umass Memorial Medical Group IncWorcester, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Bruce R. Weinstein among 6,825 internal medicine physician records in Massachusetts

Bruce R. Weinstein, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 88% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1980 · median 2004 among the 4,103 with a school on file
  • Record last updated2020 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

448 internal medicine physician records list a practice address in Worcester

They are 448 of the 13,166 NPPES records with a practice address in Worcester, and 6,825 internal medicine physician records in Massachusetts.

All 6,825 in Massachusetts → Every provider in Worcester → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Abigail Adams, M.D.Worcester, MA 016551497745806
  2. Eric Alper, M.D.Worcester, MA 016551275524340
  3. Nidhi Chojar, M.D.Worcester, MA 016551023009636
  4. Kimberly Eisenstock, M.D.Worcester, MA 016551194706069
  5. George Eypper, M.D.Worcester, MA 016551104817451
  6. Melissa Fischer, M.D.Worcester, MA 016551306837653
  7. Ish Gupta, D.O.Worcester, MA 016551598747834
  8. Andrew Karson, MDWorcester, MA 016551194706002

Common questions

What is Bruce R. Weinstein, M.D.'s NPI number?

Bruce R. Weinstein, M.D.'s National Provider Identifier (NPI) is 1144204694, issued on Nov 30, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Bruce R. Weinstein, M.D. located?

The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (508) 856-3912. Providers update this record themselves, so call before visiting.

How can I verify Bruce R. Weinstein, M.D.'s license?

NPPES lists Massachusetts license number 51424, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Bruce R. Weinstein, M.D. prescribe under Medicare Part D?

In 2024, Bruce R. Weinstein, M.D. had 2,707 Medicare Part D claims for 322 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.