Mehmet F. Fer, MD
Medical Oncology Physician · Seattle, WA
Mehmet F. Fer, MD is a medical oncology physician with a practice address in Seattle, Washington, and NPI 1164506887, issued on Oct 25, 2006. Check the license (Washington MD00023614, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Mehmet F. Fer
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- MD00023614 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Madison St, Seattle, WA 98104
- Phone
- (206) 860-6488
- Enumerated
- Oct 25, 2006
- Record last updated
- Feb 6, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (206) 860-6734
- Medicare enrollment
- Enrolled (PECOS I20100323000784); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 183 in Washington → Look up another NPI →
Also registered at 1221 Madison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dale Bloomquist, DDSOral and Maxillofacial Surgery (Dentist)1740348705
- Martha Clay, ARNPAdult Health Nurse Practitioner1073697793
Verify Mehmet F. Fer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00023614Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average medical oncology physician in 2024
353 Medicare Part D claims for 72 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. 33 claims were for opioids.
Most prescribed
- Anastrozole59 claims
- Potassium Chloride34 claims
- Brukinsa20 claims
- Oxycodone Hcl18 claims
- Gabapentin17 claims
- Folic Acid15 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 3 group practices
- Northwest Medical Specialties PLLCTacoma, WA
- Providence Health And Services- WashingtonEverett, WA
- Swedish Health ServicesSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mehmet F. Fer among 183 medical oncology physician records in Washington
Mehmet F. Fer, MD is one of 183 medical oncology physician records with a practice address in Washington. 72% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 40% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1974 · median 1998 among the 112 with a school on file
- Record last updated2009 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Washington
There are 183 medical oncology physician records in Washington.
All 183 in Washington → Every provider in Seattle → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Thomas Brown, M.D.Seattle, WA 981041992880991
- Siddhartha Devarakonda, MDSeattle, WA 981041487932398
- Albert Einstein, MDSeattle, WA 981041558444588
- Erin Ellis, MDSeattle, WA 981041447334164
- Rafic Farah, MDSeattle, WA 981041780760587
- Mark FrohlichSeattle, WA 981041366528168
- Philip Gold, MDSeattle, WA 981041265516983
- William Gwin, MDSeattle, WA 981041598875882
Common questions
What is Mehmet F. Fer, MD's NPI number?
Mehmet F. Fer, MD's National Provider Identifier (NPI) is 1164506887, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mehmet F. Fer, MD located?
The NPPES record lists a practice address at 1221 Madison St, Seattle, WA, 98104. Phone: (206) 860-6488. Providers update this record themselves, so call before visiting.
How can I verify Mehmet F. Fer, MD's license?
NPPES lists Washington license number MD00023614, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mehmet F. Fer, MD prescribe under Medicare Part D?
In 2024, Mehmet F. Fer, MD had 353 Medicare Part D claims for 72 beneficiaries; the average among medical oncology physician prescribers was 703. 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.