Maria Aina Gaspar-Oishi, M.D.
Obstetrics & Gynecology Physician · Vancouver, WA
Maria Aina Gaspar-Oishi, M.D. is an obstetrics & gynecology physician with a practice address in Vancouver, Washington, and NPI 1962630376, issued on Jun 24, 2009. Check the license (Washington MD60829971, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Maria Aina Gaspar-Oishi
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- MD60829971 WA
16892 HI
Self-reported in NPPES; status is on the state search - Practice location
- 14406 NE 20TH Ave, Vancouver, WA 98686
- Phone
- (800) 813-2000
- Enumerated
- Jun 24, 2009
- Record last updated
- Nov 12, 2025
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,038 in Washington → Look up another NPI →
Also registered at 14406 NE 20TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shaanti Abbruzzese, CNMAdvanced Practice Midwife1063577815
- Christina Adams, RDADental Assistant1639422645
- Genise Albertson, RDADental Assistant1982949830
- Camilla Albrecht, RPHPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1568645489
- Joseph Alsberge, M.D.Ophthalmology Physician1740623792
- Marcus Asby, M.D.Internal Medicine Physician1104112697
Verify Maria Aina Gaspar-Oishi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60829971Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
128 Medicare Part D claims for 67 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Clobetasol Propionate47 claims
- Valacyclovir19 claims
- Estradiol12 claims
- Yuvafem11 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.
Maria Aina Gaspar-Oishi among 1,038 obstetrics & gynecology physician records in Washington
Maria Aina Gaspar-Oishi, M.D. is one of 1,038 obstetrics & gynecology physician records with a practice address in Washington. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 63% of them.
- NPI issued2009 · 63% of these records are older, 33% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Washington
There are 1,038 obstetrics & gynecology physician records in Washington.
All 1,038 in Washington → Every provider in Vancouver → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Homayoun Akhavan-Saraf, M.D.Vancouver, WA 986861518906916
- Bruce Andison, MDVancouver, WA 986861689654972
- Eryn Applegate, MDVancouver, WA 986861558322032
- Christopher Bice, MDVancouver, WA 986861265412555
- Lissa Daimaru-Enoki, M.D.Vancouver, WA 986861083699078
- Jonathan Erich, M.D.Vancouver, WA 986861093789596
- Lisa Gibbons, DOVancouver, WA 986861366446270
- Doris Hutchinson, MDVancouver, WA 986861922038272
Common questions
What is Maria Aina Gaspar-Oishi, M.D.'s NPI number?
Maria Aina Gaspar-Oishi, M.D.'s National Provider Identifier (NPI) is 1962630376, issued on Jun 24, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Maria Aina Gaspar-Oishi, M.D. located?
The NPPES record lists a practice address at 14406 NE 20TH Ave, Vancouver, WA, 98686. Phone: (800) 813-2000. Providers update this record themselves, so call before visiting.
How can I verify Maria Aina Gaspar-Oishi, M.D.'s license?
NPPES lists Washington license number MD60829971, 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 Maria Aina Gaspar-Oishi, M.D. prescribe under Medicare Part D?
In 2024, Maria Aina Gaspar-Oishi, M.D. had 128 Medicare Part D claims for 67 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.