Garret G. De Castro, MD
Internal Medicine Physician · Renton, WA
Garret G. De Castro, MD is an internal medicine physician with a practice address in Renton, Washington, and NPI 1427273895, issued on Apr 13, 2007. Check the license (Washington MD00047669, as entered in NPPES) on the Washington Medical Commission; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Garret G. De Castro
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD00047669 WA
Self-reported in NPPES; status is on the state search - Practice location
- 606 Oakesdale Ave SW Ste C200, Renton, WA 98057
- Phone
- (866) 259-1629
- Enumerated
- Apr 13, 2007
- Record last updated
- May 31, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (855) 666-8541
- Medicaid ID
- 1427273895 WA
- Entity
- Type 1 · individual
Also registered at 606 Oakesdale Ave SW Ste C200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sharon ChristorAdult Health Nurse Practitioner1376038281
- Sara Emedi, FNP-BCFamily Nurse Practitioner1275057895
- Riley Fisher, D.O.Emergency Medicine Physician1184157448
- Phyllis Gearring-Anderson, ARNPNurse Practitioner1104906056
- Kimberly Gill, AGNPGerontology Nurse Practitioner1427540434
- Anne Gitchel, ANPNurse Practitioner1548501968
Verify Garret G. De Castro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00047669Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43 internal medicine physician records list a practice address in Renton
They are 43 of the 3,147 NPPES records with a practice address in Renton, and 3,079 internal medicine physician records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 43 in Renton → All 3,079 in Washington → Every provider in Renton →
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 Garret G. De Castro, MD's NPI number?
Garret G. De Castro, MD's National Provider Identifier (NPI) is 1427273895, issued on Apr 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Garret G. De Castro, MD located?
The NPPES record lists a practice address at 606 Oakesdale Ave SW Ste C200, Renton, WA, 98057. Phone: (866) 259-1629. Providers update this record themselves, so call before visiting.
How can I verify Garret G. De Castro, MD's license?
NPPES lists Washington license number MD00047669, 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.