Ilyas Sahin
Medical Oncology Physician · Boston, MA
Ilyas Sahin is a medical oncology physician with a practice address in Boston, Massachusetts, and NPI 1174936835, issued on Jun 10, 2014. Check the license (Massachusetts 1019472, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ilyas Sahin
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- 1019472 MA
ME149613 FL
MD16442 RI
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 726-2000
- Enumerated
- Jun 10, 2014
- Record last updated
- Jan 22, 2026
- Medicare enrollment
- Enrolled (PECOS I20240724003255); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Affan Aamir, MD, PHARMD, RPHStudent in an Organized Health Care Education/Training Program1821890377
- Matthew AbadirAnesthesiology Physician1699120550
- Taimur AbbasiInternal Medicine Physician1841673522
- Megan Abbott, MDAnesthesiology Physician1730839333
- Moustafa AbdallaStudent in an Organized Health Care Education/Training Program1952046062
- Shadi Abdar Esfahani, MD, MPHDiagnostic Radiology Physician1497137590
Verify Ilyas Sahin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1019472Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average medical oncology physician in 2024
377 Medicare Part D claims for 80 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 65 claims were for opioids.
Most prescribed
- Prochlorperazine Maleate55 claims
- Oxycodone Hcl33 claims
- Lenvima29 claims
- Eliquis19 claims
- Ondansetron Odt19 claims
- Morphine Sulfate Er18 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): 78.2 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Massachusetts General Physicians Organization IncBoston, MA
- The General Hospital CorporationBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Medical Oncology Physician providers in Massachusetts
There are 421 medical oncology physician records in Massachusetts.
Other medical oncology physician records in Massachusetts
- Janet Abrahm, MDBoston, MA1427024264
- Thomas Abrams, M.D.Boston, MA1184693947
- Jeremy Abramson, MDBoston, MA1740262484
- Nana Addo-Tabiri, MDBoston, MA1942557079
- Adeboye Adewoye, M.D.Boston, MA1316920838
- Andrew Aguirre, MD, PHDBoston, MA1609071208
- Inhye Ahn, M.D.Boston, MA1053632984
- Jean Joseph Thierry AlcindorBoston, MA1578281796
- Syed Ali, MDSpringfield, MA1174751267
- Jill Allen, M.D.Boston, MA1285671453
Common questions
What is Ilyas Sahin's NPI number?
Ilyas Sahin's National Provider Identifier (NPI) is 1174936835, issued on Jun 10, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Ilyas Sahin located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 726-2000. Providers update this record themselves, so call before visiting.
How can I verify Ilyas Sahin's license?
NPPES lists Massachusetts license number 1019472, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ilyas Sahin prescribe under Medicare Part D?
In 2024, Ilyas Sahin had 377 Medicare Part D claims for 80 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Ilyas Sahin's MIPS final score?
The 2023 MIPS final score is 78.2 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.