Amy Gruber, M.D.
Family Medicine Physician · Chatham, NJ
Amy Gruber, M.D. is a family medicine physician with a practice address in Chatham, New Jersey, and NPI 1578588851, issued on Jul 13, 2006. Check the license (New Jersey 25MA05363000, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Amy Gruber
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 25MA05363000 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 492 Main St, Chatham, NJ 07928
- Phone
- (973) 635-2432
- Enumerated
- Jul 13, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (973) 635-6169
- Medicare enrollment
- Enrolled (PECOS I20070327000687); accepts Medicare assignment
- Medical or professional school
- Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 1988
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,770 in New Jersey → Look up another NPI →
Also registered at 492 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Janice Baker, M.D.Family Medicine Physician1841216181
- Elbridge Holland, M.D.Family Medicine Physician1225089261
- Veronika Koldachenko, MSN, APRN, AGNP-CPrimary Care Nurse Practitioner1174365712
- John Nevins, DOFamily Medicine Physician1316987480
- Maria Ocasio, M.D.Family Medicine Physician1881844330
- Matthew Resciniti, D.O.Sports Medicine (Family Medicine) Physician1982862231
Verify Amy Gruber in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA05363000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average family medicine physician in 2024
1,447 Medicare Part D claims for 299 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium149 claims
- Levothyroxine Sodium93 claims
- Lisinopril74 claims
- Rosuvastatin Calcium63 claims
- Hydrochlorothiazide58 claims
- Amlodipine Besylate55 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
- Practice Associates Medical GroupMorristown, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amy Gruber among 2,770 family medicine physician records in New Jersey
Amy Gruber, M.D. is one of 2,770 family 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 55% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1988 · median 2006 among the 1,875 with a school on file
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 family medicine physician records list a practice address in Chatham
They are 8 of the 349 NPPES records with a practice address in Chatham, and 2,770 family medicine physician records in New Jersey.
All 2,770 in New Jersey → Every provider in Chatham → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Janice Baker, M.D.Chatham, NJ 079281841216181
- Elbridge Holland, M.D.Chatham, NJ 079281225089261
- John Nevins, DOChatham, NJ 079281316987480
- Maria Ocasio, M.D.Chatham, NJ 079281881844330
- Mitalie Shah, MDChatham, NJ 079281487159554
- Joseph Tribuna, M.DChatham, NJ 079281215970447
- Mikhail Varshavski, D.O.Chatham, NJ 079281548680986
- Alan Gellerstein, M.D.Cedar Knolls, NJ 079271588695712
Common questions
What is Amy Gruber, M.D.'s NPI number?
Amy Gruber, M.D.'s National Provider Identifier (NPI) is 1578588851, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Amy Gruber, M.D. located?
The NPPES record lists a practice address at 492 Main St, Chatham, NJ, 07928. Phone: (973) 635-2432. Providers update this record themselves, so call before visiting.
How can I verify Amy Gruber, M.D.'s license?
NPPES lists New Jersey license number 25MA05363000, as entered by the provider. 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 Amy Gruber, M.D. prescribe under Medicare Part D?
In 2024, Amy Gruber, M.D. had 1,447 Medicare Part D claims for 299 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.