Raphael-John Hernandez Keegan, DO
Anesthesiology Physician · Stanford, CA
Raphael-John Hernandez Keegan, DO is an anesthesiology physician with a practice address in Stanford, California, and NPI 1679967210, issued on Mar 20, 2015. Check the license (California 20A17251, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Raphael-John Hernandez Keegan
- Credential
- DO
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 20A17251 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 20, 2015
- Record last updated
- Sep 5, 2025
- Medicare enrollment
- Enrolled (PECOS I20210621001654); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
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Verify Raphael-John Hernandez Keegan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A17251Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3 hospitals and group practices
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
- Permanente Medical Group IncSan Francisco, CA
- University Anesthesia Medical GroupSan Francisco, CA
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.
Raphael-John Hernandez Keegan among 7,571 anesthesiology physician records in California
Raphael-John Hernandez Keegan, DO is one of 7,571 anesthesiology physician records with a practice address in California. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 78% of them.
- NPI issued2015 · 78% of these records are older, 20% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2017 · median 2006 among the 4,868 with a school on file
- Record last updated2025 · 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 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
387 anesthesiology physician records list a practice address in Stanford
They are 387 of the 5,606 NPPES records with a practice address in Stanford, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Stanford → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Aileen Adriano, MDStanford, CA 943051558311886
- Martin Angst, MDStanford, CA 943051386694529
- Rhett Atkinson, M.D.Stanford, CA 943051558328005
- Edward Baer, M.D.Stanford, CA 943051710945837
- William Bohman, M.D.Stanford, CA 943051265490387
- Bryan Bohman, MDStanford, CA 943051285692368
- Michael Champeau, M.D.Stanford, CA 943051538126099
- Anthony Doufas, MDStanford, CA 943051578531430
Common questions
What is Raphael-John Hernandez Keegan, DO's NPI number?
Raphael-John Hernandez Keegan, DO's National Provider Identifier (NPI) is 1679967210, issued on Mar 20, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Raphael-John Hernandez Keegan, DO 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 Raphael-John Hernandez Keegan, DO's license?
NPPES lists California license number 20A17251, 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.
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.