NPPES file of Aug 9, 2026

Thomas Robert Zimmerman, M.D.

Geriatric Medicine (Internal Medicine) Physician · Bernardsville, NJ

Thomas Robert Zimmerman, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Bernardsville, New Jersey, and NPI 1154539492, issued on May 18, 2007. Check the license on the New Jersey State Board of Medical Examiners; 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
1154539492
Name
Thomas Robert Zimmerman
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
Practice location
80 Morristown RD, Bernardsville, NJ 07924
Phone
(908) 766-0750
Enumerated
May 18, 2007
Record last updated
Sep 11, 2025
Fax
(908) 766-4870
Medicaid ID
1221906 NJ
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest geriatric medicine (internal medicine) physician records → All 165 in New Jersey → Look up another NPI →

Verify Thomas Robert Zimmerman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Jersey State Board of Medical ExaminersCheck 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 New Jersey license search

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100% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024

18 Medicare Part D claims, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.

  1. Thomas Zimmerman18
  2. Specialty average4,246

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.

Thomas Robert Zimmerman among 165 geriatric medicine (internal medicine) physician records in New Jersey

Thomas Robert Zimmerman, M.D. is one of 165 geriatric medicine (internal medicine) physician records with a practice address in New Jersey. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 58% of them.

  • NPI issued2007 · 58% of these records are older, 28% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 64% of these records are
  • Record last updated2025 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Internal Medicine) Physician providers in New Jersey

There are 165 geriatric medicine (internal medicine) physician records in New Jersey.

All 165 in New Jersey → Every provider in Bernardsville → Geriatric Medicine (Internal Medicine) Physician nationwide →

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Beata Chauhan, D.O.Berkeley Heights, NJ 079221144432576
  2. Michele Elkins, M.DBerkeley Heights, NJ 079221073736005
  3. Michael Donnelly, MDChester, NJ 079301255310330
  4. George Kline, M.D.Chester, NJ 079301104808872
  5. Jane Luo, MDLyons, NJ 079391184648800
  6. Loveleen Sidhu, MDLyons, NJ 079391790707750
  7. Christine Yarus, M.D.Lyons, NJ 079391942330584
  8. James Wolf, M.D.Mendham, NJ 079451497743876

Common questions

What is Thomas Robert Zimmerman, M.D.'s NPI number?

Thomas Robert Zimmerman, M.D.'s National Provider Identifier (NPI) is 1154539492, issued on May 18, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Thomas Robert Zimmerman, M.D. located?

The NPPES record lists a practice address at 80 Morristown RD, Bernardsville, NJ, 07924. Phone: (908) 766-0750. Providers update this record themselves, so call before visiting.

How can I verify Thomas Robert Zimmerman, M.D.'s license?

Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Thomas Robert Zimmerman, M.D. prescribe under Medicare Part D?

In 2024, Thomas Robert Zimmerman, M.D. had 18 Medicare Part D claims; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.