NPPES file of Aug 9, 2026

Robin B. Mendelsohn, M.D.

Gastroenterology Physician · New York, NY

Robin B. Mendelsohn, M.D. is a gastroenterology physician with a practice address in New York, New York, and NPI 1255500153, issued on Feb 25, 2008. Check the license (New York 240809, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1255500153
Name
Robin B. Mendelsohn
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
240809 NY
Self-reported in NPPES; status is on the state search
Practice location
1275 York Ave, New York, NY 10021
Phone
(212) 639-2000
Enumerated
Feb 25, 2008
Record last updated
Apr 6, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20080509000370); accepts Medicare assignment
Medical or professional school
Georgetown University School Of Medicine, 2004
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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Also registered at 1275 York Ave

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

  1. Ghassan Abou-Alfa, MDMedical Oncology Physician1134190168
  2. Andrea Abramson, MDDiagnostic Radiology Physician1952381030
  3. David H Abramson, MDOphthalmology Physician1235114026
  4. Sara Abramson, MDDiagnostic Radiology Physician1497733133
  5. Lauren Abrey, MDNeurology Physician1336110360
  6. Nadeem Abu-Rustum, MDGynecologic Oncology Physician1164407540

Verify Robin B. Mendelsohn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 240809
    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 New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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56% fewer Medicare Part D claims than the average gastroenterology physician in 2024

360 Medicare Part D claims for 113 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.

  1. Robin Mendelsohn360
  2. Specialty average811

Most prescribed

  1. Omeprazole118 claims
  2. Famotidine48 claims
  3. Pantoprazole Sodium32 claims
  4. Cholestyramine22 claims
  5. Linzess22 claims
  6. Balsalazide Disodium11 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): 79.1 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.

  1. Qualityout of 100 · 30% of the final score69.5
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 2 group practices

  1. Memorial Gastroenterology GroupNew York, NY
  2. Msk HarrisonWest Harrison, NY

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

Robin B. Mendelsohn among 1,797 gastroenterology physician records in New York

Robin B. Mendelsohn, M.D. is one of 1,797 gastroenterology physician records with a practice address in New York. 88% 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 62% of them.

  • NPI issued2008 · 62% of these records are older, 31% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 77% of these records are
  • Graduated2004 · median 1999 among the 1,378 with a school on file
  • Record last updated2015 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in New York

There are 1,797 gastroenterology physician records in New York.

The 8 gastroenterology physician records with the nearest ZIP codes

  1. James Aisenberg, M.D.New York, NY 100211801873518
  2. Peter Baiocco, M.D.New York, NY 100211679539027
  3. Paul Basuk, M.D.New York, NY 100211033194675
  4. David Carr-Locke, MD FRCP FACG MASGENew York, NY 100211417913609
  5. Hans Gerdes, MDNew York, NY 100211437121217
  6. Philip Katz, MDNy, NY 100211124097340
  7. Jay Katzman, MDNew York, NY 100211043284227
  8. Michael Krumholz, M.D.New York, NY 100211700886645

Common questions

What is Robin B. Mendelsohn, M.D.'s NPI number?

Robin B. Mendelsohn, M.D.'s National Provider Identifier (NPI) is 1255500153, issued on Feb 25, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Robin B. Mendelsohn, M.D. located?

The NPPES record lists a practice address at 1275 York Ave, New York, NY, 10021. Phone: (212) 639-2000. Providers update this record themselves, so call before visiting.

How can I verify Robin B. Mendelsohn, M.D.'s license?

NPPES lists New York license number 240809, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Robin B. Mendelsohn, M.D. prescribe under Medicare Part D?

In 2024, Robin B. Mendelsohn, M.D. had 360 Medicare Part D claims for 113 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

What is Robin B. Mendelsohn, M.D.'s MIPS final score?

The 2023 MIPS final score is 79.1 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.