Fredrick An, DO
Internal Medicine Physician · Olympia, WA
Fredrick An, DO is an internal medicine physician with a practice address in Olympia, Washington, and NPI 1194991901, issued on May 1, 2008. Check the license (Washington OP61580368, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Fredrick An
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- OP61580368 WA
DO29350 OR
Self-reported in NPPES; status is on the state search - Practice location
- 413 Lilly RD NE, Olympia, WA 98506
- Phone
- (360) 491-9480
- Enumerated
- May 1, 2008
- Entity
- Type 1 · individual
Also registered at 413 Lilly RD NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stella Aaboe, MDAnesthesiology Physician1306810700
- Waleed Abraham, MDHospitalist Physician1871567495
- Nina Andersen, DOHospice and Palliative Medicine (Internal Medicine) Physician1912535576
- Andrea Andrews, PHARMDPharmacist1952855389
- Scott Archer, ARNPAdult Health Nurse Practitioner1093979940
- Alexandra Arendt, DOAnesthesiology Physician1831765130
Verify Fredrick An in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OP61580368Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2 hospital and facility affiliations
- Franciscan Medical GroupTacoma, WA
- Kaiser Foundation Health Plan OF WashingtonOlympia, WA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
88 internal medicine physician records list a Olympia practice address
They are 88 of the 5,034 NPPES records with a Olympia practice address, and 3,888 internal medicine physician records in Washington.
All 88 in Olympia → All 3,888 in Washington → Every provider in Olympia →
Other internal medicine physician records in Washington
- Sheida Aalami, M.D.Seattle, WA1730573296
- Barry Aaronson, MDSeattle, WA1952418345
- Gloria AbacanProsser, WA1316040298
- Rebecca AbaySeattle, WA1528565520
- Naseer Abbas, MDTacoma, WA1962769380
- Joel Abbott, D.O.Tacoma, WA1477752723
- Jesse Abbott Klafter, M.D.Renton, WA1225394935
- Paul Abdallah, MDSeattle, WA1639166119
- Abir Abdel-Kader, MDRichland, WA1649407081
- Hussein Abdille, MDSeattle, WA1588368831
Common questions
What is Fredrick An, DO's NPI number?
Fredrick An, DO's National Provider Identifier (NPI) is 1194991901, issued on May 1, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Fredrick An, DO located?
The NPPES record lists a practice address at 413 Lilly RD NE, Olympia, WA, 98506. Phone: (360) 491-9480. Providers update this record themselves, so call before visiting.
How can I verify Fredrick An, DO's license?
NPPES lists Washington license number OP61580368, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.