NPPES file of Aug 9, 2026

Robert John Bierwirth, M.D.

Gastroenterology Physician · Cranston, RI

Robert John Bierwirth, M.D. is a gastroenterology physician with a practice address in Cranston, Rhode Island, and NPI 1053517565, issued on Jun 22, 2007. Check the license (Rhode Island 13848, 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
1053517565
Name
Robert John Bierwirth
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
13848 RI
Self-reported in NPPES; status is on the state search
Practice location
1150 Reservoir Ave, Cranston, RI 02920
Phone
(401) 943-1300
Enumerated
Jun 22, 2007
Record last updated
Oct 15, 2025
Medicare enrollment
Enrolled (PECOS I20120730000262); accepts Medicare assignment
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 1150 Reservoir Ave

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

  1. Dawn BarbozaMassage Therapist1639341050
  2. James Bonner, M.D.Pediatrics Physician1083754717
  3. A. Child, ODOptometrist1366599441
  4. William Coscina, MDDiagnostic Radiology Physician1801886353
  5. Deirdre Couture, RNPAdult Health Nurse Practitioner1871645341
  6. William Creighton, MDEmergency Medical Services (Emergency Medicine) Physician1508948332

Verify Robert John Bierwirth 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 13848    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

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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93% more Medicare Part D claims than the average gastroenterology physician in 2024

1,564 Medicare Part D claims for 307 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.

  1. Robert Bierwirth1,564
  2. Specialty average811

Most prescribed

  1. Pantoprazole Sodium367 claims
  2. Famotidine325 claims
  3. Omeprazole147 claims
  4. Linzess59 claims
  5. Creon39 claims
  6. Azathioprine37 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: $129,130.97

341 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, 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. Robert Bierwirth$129,131
  2. Specialty average$5,016

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

Bills Medicare through 2 group practices

  1. Internal Medicine Associates IncCranston, RI
  2. University Gastroenterology, LLCProvidence, RI

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

Robert John Bierwirth among 96 gastroenterology physician records in Rhode Island

Robert John Bierwirth, 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 2007, is newer than 59% of them.

  • NPI issued2007 · 59% of these records are older, 33% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2003 · median 1997 among the 66 with a school on file
  • Record last updated2025 · 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 Cranston → Gastroenterology Physician nationwide →

The 8 gastroenterology physician records with the nearest ZIP codes

  1. Morris Elevado, M.D.Cranston, RI 029201417941105
  2. Thomas McGreen, M.D.Cranston, RI 029201043205537
  3. George Powers, M.D.Cranston, RI 029201255325932
  4. Paul Roderick, M.D.Cranston, RI 029201831183904
  5. Robert Wolfgang, D.O.Cranston, RI 029201871587550
  6. Colin Woodard, DOCranston, RI 029201760820591
  7. Vincent Vacca, MDJohnston, RI 029191407832595
  8. Apaar Dadlani, M.D.Riverside, RI 029151427611557

Common questions

What is Robert John Bierwirth, M.D.'s NPI number?

Robert John Bierwirth, M.D.'s National Provider Identifier (NPI) is 1053517565, issued on Jun 22, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Robert John Bierwirth, M.D. located?

The NPPES record lists a practice address at 1150 Reservoir Ave, Cranston, RI, 02920. Phone: (401) 943-1300. Providers update this record themselves, so call before visiting.

How can I verify Robert John Bierwirth, M.D.'s license?

NPPES lists Rhode Island license number 13848, 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 Robert John Bierwirth, M.D. prescribe under Medicare Part D?

In 2024, Robert John Bierwirth, M.D. had 1,564 Medicare Part D claims for 307 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.