Jason Ya, MD
Dermatology Physician · Stanford, CA
Jason Ya, MD is a dermatology physician with a practice address in Stanford, California, and NPI 1487114625, issued on Mar 22, 2019. Check the license (California A191233, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jason Ya
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- A191233 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Mar 22, 2019
- Record last updated
- Nov 1, 2023
- Medicare enrollment
- Enrolled (PECOS I20231031001591); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
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Verify Jason Ya in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A191233Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average dermatology physician in 2024
46 Medicare Part D claims for 17 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
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.
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Jason Ya among 2,083 dermatology physician records in California
Jason Ya, MD is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 89% of them.
- NPI issued2019 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2019 · median 2006 among the 1,450 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
59 dermatology physician records list a practice address in Stanford
They are 59 of the 5,606 NPPES records with a practice address in Stanford, and 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in Stanford → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Joanna Badger, MDStanford, CA 943051881740678
- Howard Chang, MDStanford, CA 943051326061144
- David Fiorentino, MDStanford, CA 943051740335025
- Michelle Galant, M.D.Stanford, CA 943051225043938
- Paul Khavari, MDStanford, CA 943051780696252
- Youn-Hee Kim, MDStanford, CA 943051770619355
- Alfred Lane, MDStanford, CA 943051194879981
- Matt Marinkovich, MDStanford, CA 943051386734937
Common questions
What is Jason Ya, MD's NPI number?
Jason Ya, MD's National Provider Identifier (NPI) is 1487114625, issued on Mar 22, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Jason Ya, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Jason Ya, MD's license?
NPPES lists California license number A191233, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jason Ya, MD prescribe under Medicare Part D?
In 2024, Jason Ya, MD had 46 Medicare Part D claims for 17 beneficiaries; the average among dermatology physician prescribers was 797. 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.