NPPES file of Aug 9, 2026

Alexander J. Harmatz, M.D.

Gastroenterology Physician · Providence, RI

Alexander J. Harmatz, M.D. is a gastroenterology physician with a practice address in Providence, Rhode Island, and NPI 1730142696, issued on Apr 10, 2006. Check the license (Rhode Island MD16455, as entered in NPPES) on the Rhode Island Board of Medical Licensure and Discipline; 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
1730142696
Name
Alexander J. Harmatz
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
MD16455 RI
Self-reported in NPPES; status is on the state search
Practice location
825 Chalkstone Ave, Providence, RI 02908
Phone
(401) 456-6510
Enumerated
Apr 10, 2006
Record last updated
Apr 6, 2026
Medicaid ID
1235945650 RI
Medicare enrollment
Enrolled (PECOS I20181129002888); accepts Medicare assignment
Medical or professional school
Medical College Of Georgia School Of Medicine, 1984
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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8 nearest gastroenterology physician records → All 96 in Rhode Island → Look up another NPI →

Also registered at 825 Chalkstone Ave

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

  1. Abd Almonem Abdelrahman, M.D.Pulmonary Disease Physician1972935476
  2. Azamat Abdyraimov, MDInternal Medicine Physician1184303216
  3. Joanna Abi Chebl, MDGeriatric Medicine (Internal Medicine) Physician1700504396
  4. Alaa Abu Ajamieh, MDInternal Medicine Physician1952283830
  5. Yusra Abu ShreikhInternal Medicine Physician1255169991
  6. Hussein Abu-Hashish, MDHematology & Oncology Physician1154908093

Verify Alexander J. Harmatz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersRhode Island Board of Medical Licensure and Discipline
    Search for license MD16455    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 Rhode Island license search

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40% fewer Medicare Part D claims than the average gastroenterology physician in 2024

487 Medicare Part D claims for 193 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.

  1. Alexander Harmatz487
  2. Specialty average811

Most prescribed

  1. Omeprazole155 claims
  2. Gavilyte-G62 claims
  3. Dicyclomine Hcl46 claims
  4. Pantoprazole Sodium38 claims
  5. Ursodiol20 claims
  6. Sucralfate14 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: $608.44

25 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, 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. Alexander Harmatz$608.44
  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. Prospect Chartercare Physicians LLCCranston, RI

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

Alexander J. Harmatz among 96 gastroenterology physician records in Rhode Island

Alexander J. Harmatz, M.D. is one of 96 gastroenterology physician records with a practice address in Rhode Island. 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 19% of them.

  • NPI issued2006 · 19% of these records are older, 41% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated1984 · median 1997 among the 66 with a school on file
  • Record last updated2026 · 51% 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 Rhode Island practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in Rhode Island

There are 96 gastroenterology physician records in Rhode Island.

All 96 in Rhode Island → Every provider in Providence → Gastroenterology Physician nationwide →

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Mahmoud Ahmed Rahal, MDProvidence, RI 029081104346733
  2. Alan Epstein, M.D.Providence, RI 029081831157908
  3. Nabil Toubia, M.D.Providence, RI 029081922065200
  4. Richard Gilbert, M.D.Cranston, RI 029101184847089
  5. Philip Opalenski, MDCranston, RI 029101619062411
  6. Autumn Hines, DOProvidence, RI 029051932495249
  7. Sheldon Lidofsky, MDProvidence, RI 029051447336904
  8. Peter Margolis, MDProvidence, RI 029051659457133

Common questions

What is Alexander J. Harmatz, M.D.'s NPI number?

Alexander J. Harmatz, M.D.'s National Provider Identifier (NPI) is 1730142696, issued on Apr 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Alexander J. Harmatz, M.D. located?

The NPPES record lists a practice address at 825 Chalkstone Ave, Providence, RI, 02908. Phone: (401) 456-6510. Providers update this record themselves, so call before visiting.

How can I verify Alexander J. Harmatz, M.D.'s license?

NPPES lists Rhode Island license number MD16455, as entered by the provider. Search the Rhode Island Board of Medical Licensure and Discipline at https://healthri.mylicense.com/Verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Alexander J. Harmatz, M.D. prescribe under Medicare Part D?

In 2024, Alexander J. Harmatz, M.D. had 487 Medicare Part D claims for 193 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.