Gregory Charles Allen, MD
Anesthesiology Physician · Olympia, WA
Gregory Charles Allen, MD is an anesthesiology physician with a practice address in Olympia, Washington, and NPI 1669433538, issued on Mar 31, 2006. Check the license (Washington MD00037436, as entered in NPPES) on the Washington Medical Commission; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregory Charles Allen
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- MD00037436 WA
Self-reported in NPPES; status is on the state search - Practice location
- 3435 Martin Way E Ste G, Olympia, WA 98506
- Phone
- (360) 438-6400
- Enumerated
- Mar 31, 2006
- Record last updated
- Aug 30, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (360) 438-6435
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,701 in Washington → Look up another NPI →
Also registered at 3435 Martin Way E Ste G
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dale Disalvo, MDAnesthesiology Physician1316391089
- Casey Stevick, MDAnesthesiology Physician1528591237
Verify Gregory Charles Allen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00037436Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gregory Charles Allen among 1,701 anesthesiology physician records in Washington
Gregory Charles Allen, MD is one of 1,701 anesthesiology physician records with a practice address in Washington. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 55% newer
- In a Medicare fileNo · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2019 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in Washington
There are 1,701 anesthesiology physician records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,701 in Washington → Every provider in Olympia → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Stella Aaboe, MDOlympia, WA 985061306810700
- William Beppu, MDOlympia, WA 985061528020872
- Kevin Blackmon, MDOlympia, WA 985061538121892
- William Conklin, MDOlympia, WA 985061467414722
- Dewayne Enyeart, MDOlympia, WA 985061902864630
- William Garrett, MDOlympia, WA 985061578511556
- Charles Harding, MDOlympia, WA 985061184682817
- Joanne Johnson, MDOlympia, WA 985061902854995
Common questions
What is Gregory Charles Allen, MD's NPI number?
Gregory Charles Allen, MD's National Provider Identifier (NPI) is 1669433538, issued on Mar 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Charles Allen, MD located?
The NPPES record lists a practice address at 3435 Martin Way E Ste G, Olympia, WA, 98506. Phone: (360) 438-6400. Providers update this record themselves, so call before visiting.
How can I verify Gregory Charles Allen, MD's license?
NPPES lists Washington license number MD00037436, 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), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.