NPPES file of Aug 9, 2026

Isadore Phillip Gutwein, M.D.

Gastroenterology Physician · Bronx, NY

Isadore Phillip Gutwein, M.D. is a gastroenterology physician with a practice address in Bronx, New York, and NPI 1053306480, issued on Sep 12, 2005. Check the license (New York 121055, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1053306480
Name
Isadore Phillip Gutwein
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
121055 NY
Self-reported in NPPES; status is on the state search
Practice location
3765 Riverdale Ave, Bronx, NY 10463
Phone
(718) 549-4267
Enumerated
Sep 12, 2005
Record last updated
Jul 22, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(718) 884-4885
Medicaid ID
00227069 NY
Medicare enrollment
Enrolled (PECOS I20101012000486); accepts Medicare assignment
Medical or professional school
Albert Einstein College Of Medicine Of Yeshiva University, 1973
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 3765 Riverdale Ave

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

  1. Michael Ader, M.D.Gastroenterology Physician1760477830
  2. Renee Brand, M.D.Pediatrics Physician1508956863
  3. Sean Byrne, P.A.Medical Physician Assistant1821064155
  4. Manuel Cabrera, MDPulmonary Disease Physician1932271327
  5. Ilana CohenFamily Nurse Practitioner1487101218
  6. Nkwanyuo Dennis, M.D.Internal Medicine Physician1245340074

Verify Isadore Phillip Gutwein 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 121055
    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

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41% more Medicare Part D claims than the average gastroenterology physician in 2024

1,142 Medicare Part D claims for 357 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Isadore Gutwein1,142
  2. Specialty average811

Most prescribed

  1. Omeprazole244 claims
  2. Gavilyte-G113 claims
  3. Dexlansoprazole Dr52 claims
  4. Linzess36 claims
  5. Nortriptyline Hcl29 claims
  6. Esomeprazole Magnesium27 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.

Industry payments in 2024: $1,278.22

81 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Isadore Gutwein$1,278.22
  2. Specialty average$5,015.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Gastrointestinal Care OF Long Island PLLCWantagh, NY

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

Gastroenterology Physician providers in New York

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

Other gastroenterology physician records in New York

  1. Elie Abadie, MDBrooklyn, NY1639235435
  2. Hafsa Abbas, MDFlushing, NY1487061438
  3. Naeem Abbas, MDValley Stream, NY1437432192
  4. Uzma Abbasi, M.D.Oneida, NY1275856106
  5. Maisa Abdalla, M.D.Rochester, NY1669645222
  6. Muhammad Abdullah, MDBrooklyn, NY1053312645
  7. Arthur Abelow, MDBronx, NY1235242728
  8. Elie Abemayor, M.D.Mount Kisco, NY1376565358
  9. Jeffrey Abergel, MDCortlandt Manor, NY1649472382
  10. Chaim Abittan, MDGreat Neck, NY1972512002

Common questions

What is Isadore Phillip Gutwein, M.D.'s NPI number?

Isadore Phillip Gutwein, M.D.'s National Provider Identifier (NPI) is 1053306480, issued on Sep 12, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Isadore Phillip Gutwein, M.D. located?

The NPPES record lists a practice address at 3765 Riverdale Ave, Bronx, NY, 10463. Phone: (718) 549-4267. Providers update this record themselves, so call before visiting.

How can I verify Isadore Phillip Gutwein, M.D.'s license?

NPPES lists New York license number 121055, 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 Isadore Phillip Gutwein, M.D. prescribe under Medicare Part D?

In 2024, Isadore Phillip Gutwein, M.D. had 1,142 Medicare Part D claims for 357 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.