Gregory E. Simon, MD
Psychiatry Physician · Seattle, WA
Gregory E. Simon, MD is a psychiatry physician with a practice address in Seattle, Washington, and NPI 1609928464, issued on Jan 18, 2007. Check the license (Washington MD00020959, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Gregory E. Simon
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- MD00020959 WA
Self-reported in NPPES; status is on the state search - Practice location
- 310 15TH Ave E, Seattle, WA 98112
- Phone
- (206) 326-2200
- Enumerated
- Jan 18, 2007
- Record last updated
- May 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 8110850 WA
- Medicare enrollment
- Enrolled (PECOS I20090519000454); accepts Medicare assignment
- Medical or professional school
- University Of North Carolina At Chapel Hill School Of Medicine, 1982
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 1,195 in Washington → Look up another NPI →
Also registered at 310 15TH Ave E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jo Anderson, RPHPharmacist1063612083
- Brenda Augustavo, PHPharmacist1790814531
- Daniel Avery, MD MPHUrology Physician1215192463
- Brandon Bartels, A.R.N.P.Adult Health Nurse Practitioner1467518076
- Anamika Bennett, L.D.Audiologist-Hearing Aid Fitter1891918124
- Barbara Berry, P.T.Physical Therapist1831249473
Verify Gregory E. Simon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00020959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% more Medicare Part D claims than the average psychiatry physician in 2024
1,536 Medicare Part D claims for 100 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Clonazepam120 claims
- Trazodone Hcl87 claims
- Buspirone Hcl79 claims
- Lamotrigine75 claims
- Bupropion Xl67 claims
- Mirtazapine60 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 one group practice
- Kaiser Foundation Health Plan OF WashingtonSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory E. Simon among 1,195 psychiatry physician records in Washington
Gregory E. Simon, MD is one of 1,195 psychiatry physician records with a practice address in Washington. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 40% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileYes · 39% of these records are
- Graduated1982 · median 2007 among the 462 with a school on file
- Record last updated2021 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
485 psychiatry physician records list a practice address in Seattle
They are 485 of the 41,956 NPPES records with a practice address in Seattle, and 1,195 psychiatry physician records in Washington.
All 1,195 in Washington → Every provider in Seattle → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Marco Baquero, MDSeattle, WA 981121730298902
- Rowin Cantrell, M.D.Seattle, WA 981121821042813
- Margaret Cashman, MD ACPSeattle, WA 981121366444325
- Tobias DangSeattle, WA 981121184704165
- Scot Gibson, MDSeattle, WA 981121639289143
- Kate Grossman, MDSeattle, WA 981121629159777
- Mark Hamblin, M.D.Seattle, WA 981121245335363
- Mark Hoerr, MDSeattle, WA 981121356378400
Common questions
What is Gregory E. Simon, MD's NPI number?
Gregory E. Simon, MD's National Provider Identifier (NPI) is 1609928464, issued on Jan 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory E. Simon, MD located?
The NPPES record lists a practice address at 310 15TH Ave E, Seattle, WA, 98112. Phone: (206) 326-2200. Providers update this record themselves, so call before visiting.
How can I verify Gregory E. Simon, MD's license?
NPPES lists Washington license number MD00020959, 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 Gregory E. Simon, MD prescribe under Medicare Part D?
In 2024, Gregory E. Simon, MD had 1,536 Medicare Part D claims for 100 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.