Mark R. Gershenbaum, DO
Hospitalist Physician · Freehold, NJ
Mark R. Gershenbaum, DO is a hospitalist physician with a practice address in Freehold, New Jersey, and NPI 1982665782, issued on Mar 31, 2006. Check the license (New Jersey 25MB04672200, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark R. Gershenbaum
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 25MB04672200 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 901 West Main St, Freehold, NJ 07728
- Phone
- (732) 294-2666
- Enumerated
- Mar 31, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (732) 431-8267
- Medicaid ID
- 5453101 NJ
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 644 in New Jersey → Look up another NPI →
Also registered at 901 West Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Ross, DOHospitalist Physician1255392049
Verify Mark R. Gershenbaum 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 25MB04672200Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average hospitalist physician in 2024
96 Medicare Part D claims for 28 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of 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 practice group's MIPS final score for 2023 (Medicare payment program): 79.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Mark R. Gershenbaum among 644 hospitalist physician records in New Jersey
Mark R. Gershenbaum, DO is one of 644 hospitalist physician records with a practice address in New Jersey. 91% 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 under 1% of them.
- NPI issued2006 · under 1% of these records are older, 86% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileNo · 88% of these records are
- Record last updated2026 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in New Jersey
There are 644 hospitalist physician records in New Jersey.
All 644 in New Jersey → Every provider in Freehold → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Ali Choudhry, MDFreehold, NJ 077281932738325
- Aya Marachi, M.D.Freehold, NJ 077281396235800
- Ryan Narain, MDFreehold, NJ 077281578135596
- William Ross, DOFreehold, NJ 077281255392049
- Eduard FuzaylovManalapan, NJ 077261891974507
- Moyosore Oluleye, MDHolmdel, NJ 077331124605365
- Alan HamzaLong Branch, NJ 077401366794612
- Anthony Morelli, D.O.Middletown, NJ 077481639463730
Common questions
What is Mark R. Gershenbaum, DO's NPI number?
Mark R. Gershenbaum, DO's National Provider Identifier (NPI) is 1982665782, issued on Mar 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark R. Gershenbaum, DO located?
The NPPES record lists a practice address at 901 West Main St, Freehold, NJ, 07728. Phone: (732) 294-2666. Providers update this record themselves, so call before visiting.
How can I verify Mark R. Gershenbaum, DO's license?
NPPES lists New Jersey license number 25MB04672200, 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 Mark R. Gershenbaum, DO prescribe under Medicare Part D?
In 2024, Mark R. Gershenbaum, DO had 96 Medicare Part D claims for 28 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Mark R. Gershenbaum, DO's MIPS final score?
The 2023 MIPS final score is 79.4 of 100, reported for the practice group. 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.