Harvey G. Masor, MD
Internal Medicine Physician · Irvington, NJ
Harvey G. Masor, MD is an internal medicine physician with a practice address in Irvington, New Jersey, and NPI 1538338199, issued on Feb 27, 2008. Check the license (New Jersey 25MA02102900, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Harvey G. Masor
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25MA02102900 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 739 Chancellor Ave, Irvington, NJ 07111
- Phone
- (973) 371-5959
- Enumerated
- Feb 27, 2008
- Record last updated
- Mar 19, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (973) 371-0171
- Medicaid ID
- 1D 1727702 NJ
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Verify Harvey G. Masor 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 25MA02102900Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
83 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Eliquis12 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.
Harvey G. Masor among 4,632 internal medicine physician records in New Jersey
Harvey G. Masor, MD is one of 4,632 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 2008, is newer than 59% of them.
- NPI issued2008 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2008 · 63% 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 Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 internal medicine physician records list a practice address in Irvington
They are 6 of the 337 NPPES records with a practice address in Irvington, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Irvington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Chidi Anukwuem, M.D.Irvington, NJ 071111487719753
- Nudrat Ayub, M.DIrvington, NJ 071111346430774
- Suresh Belani, M.D.Irvington, NJ 071111538233242
- Patricia Brown, MDIrvington, NJ 071111144395617
- Chikezie Onyenso, MDIrvington, NJ 071111578605812
- James Agresti, DONutley, NJ 071101578511135
- James Agresti, MDNutley, NJ 071101255389813
- Maryann Alessio, DONutley, NJ 071101750499257
Common questions
What is Harvey G. Masor, MD's NPI number?
Harvey G. Masor, MD's National Provider Identifier (NPI) is 1538338199, issued on Feb 27, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Harvey G. Masor, MD located?
The NPPES record lists a practice address at 739 Chancellor Ave, Irvington, NJ, 07111. Phone: (973) 371-5959. Providers update this record themselves, so call before visiting.
How can I verify Harvey G. Masor, MD's license?
NPPES lists New Jersey license number 25MA02102900, 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 Harvey G. Masor, MD prescribe under Medicare Part D?
In 2024, Harvey G. Masor, MD had 83 Medicare Part D claims; 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.