Warren L. Fein, MD
Internal Medicine Physician · Seattle, WA
Warren L. Fein, MD is an internal medicine physician with a practice address in Seattle, Washington, and NPI 1659455376, issued on Oct 25, 2006. Check the license (Washington MD00025226, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Warren L. Fein
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD00025226 WA
Self-reported in NPPES; status is on the state search - Practice location
- 2208 NW Market St Ste 410, Seattle, WA 98107
- Phone
- (206) 320-3335
- Enumerated
- Oct 25, 2006
- Record last updated
- Oct 7, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (206) 320-8027
- Entity
- Type 1 · individual
Also registered at 2208 NW Market St Ste 410
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Warren L. Fein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00025226Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
239 Medicare Part D claims for 76 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium20 claims
- Amlodipine Besylate18 claims
- Metoprolol Succinate13 claims
- Lisinopril12 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.
821 internal medicine physician records list a practice address in Seattle
They are 821 of the 41,956 NPPES records with a practice address in Seattle, and 3,079 internal medicine physician records in Washington.
All 821 in Seattle → All 3,079 in Washington → Every provider in Seattle →
Other internal medicine physician records in Washington
- Sheida Aalami, M.D.Seattle, WA1730573296
- Gloria AbacanProsser, WA1316040298
- Ahmad Abadullah, MDUniversity Place, WA1225005721
- Rebecca AbaySeattle, WA1528565520
- Naseer Abbas, MDTacoma, WA1962769380
- James Abbey, M.D.Anacortes, WA1447646039
- Joel Abbott, D.O.Tacoma, WA1477752723
- Paul Abdallah, MDSeattle, WA1639166119
- Abir Abdel-Kader, MDRichland, WA1649407081
- Hussein Abdille, MDSeattle, WA1588368831
Common questions
What is Warren L. Fein, MD's NPI number?
Warren L. Fein, MD's National Provider Identifier (NPI) is 1659455376, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Warren L. Fein, MD located?
The NPPES record lists a practice address at 2208 NW Market St Ste 410, Seattle, WA, 98107. Phone: (206) 320-3335. Providers update this record themselves, so call before visiting.
How can I verify Warren L. Fein, MD's license?
NPPES lists Washington license number MD00025226, 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 Warren L. Fein, MD prescribe under Medicare Part D?
In 2024, Warren L. Fein, MD had 239 Medicare Part D claims for 76 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.