NPPES file of Aug 9, 2026

Shirin Sioshansi, M.D.

Radiation Oncology Physician · Providence, RI

Shirin Sioshansi, M.D. is a radiation oncology physician with a practice address in Providence, Rhode Island, and NPI 1518152438, issued on Sep 13, 2007. Check the license (Rhode Island MD20329, 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
1518152438
Name
Shirin Sioshansi
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License numbers
MD20329 RI
247683 MA
Self-reported in NPPES; status is on the state search
Practice location
593 Eddy St, Providence, RI 02903
Phone
(401) 444-8311
Enumerated
Sep 13, 2007
Record last updated
Jun 22, 2026
Medicaid ID
110089056A MA
Medicare enrollment
Enrolled (PECOS I20250122000206); accepts Medicare assignment
Medical or professional school
Warren Alpert Medical School Of Brown University, 2006
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 593 Eddy St

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

  1. Farah AbazaStudent in an Organized Health Care Education/Training Program1598437477
  2. Nilofar Abdul ShukurPhysician Assistant1336010529
  3. Hael Abdulrazeq, MDNeurological Surgery Physician1659934289
  4. James Abernathy, MDAnesthesiology Physician1942257217
  5. Karen Abi Chebl, MDStudent in an Organized Health Care Education/Training Program1255179552
  6. Georges Abi Roustom, MDAnesthesiology Physician1548871908

Verify Shirin Sioshansi 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 MD20329    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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69% fewer Medicare Part D claims than the average radiation oncology physician in 2024

42 Medicare Part D claims, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. Shirin Sioshansi42
  2. Specialty average134

Most prescribed

  1. Gabapentin18 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.

Bills Medicare through 2 group practices

  1. Lifespan Physician Group IncProvidence, RI
  2. Radiosurgery Center OF Rhode Island LLCProvidence, RI

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

Radiation Oncology Physician providers in Rhode Island

There are 29 radiation oncology physician records in Rhode Island.

All 29 in Rhode Island → Every provider in Providence →

Other radiation oncology physician records in Rhode Island

  1. James Assif, MDWakefield, RI1215566849
  2. Rashmi Benda, M.D.Warwick, RI1750334769
  3. Prakash Chougule, M.D.Warwick, RI1174510945
  4. John Coen, MDProvidence, RI1891720165
  5. Brijal Desai, MDProvidence, RI1811282767
  6. Thomas Dipetrillo, M.DProvidence, RI1881651941
  7. Martin Fuss, M.D.Woonsocket, RI1710990312
  8. Jonathan Glanzman, MDProvidence, RI1649533175
  9. Donald Joyce, M.D.Providence, RI1871596833
  10. Michael Katin, MDWoonsocket, RI1811994999

Common questions

What is Shirin Sioshansi, M.D.'s NPI number?

Shirin Sioshansi, M.D.'s National Provider Identifier (NPI) is 1518152438, issued on Sep 13, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Shirin Sioshansi, M.D. located?

The NPPES record lists a practice address at 593 Eddy St, Providence, RI, 02903. Phone: (401) 444-8311. Providers update this record themselves, so call before visiting.

How can I verify Shirin Sioshansi, M.D.'s license?

NPPES lists Rhode Island license number MD20329, 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 Shirin Sioshansi, M.D. prescribe under Medicare Part D?

In 2024, Shirin Sioshansi, M.D. had 42 Medicare Part D claims; the average among radiation oncology physician prescribers was 134. 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.