Joe Walker, M.D.
Psychiatry Physician · San Francisco, CA
Joe Walker, M.D. is a psychiatry physician with a practice address in San Francisco, California, and NPI 1427070754, issued on Jul 24, 2006. Check the license (California G46287, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joe Walker
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G46287 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2340 Clay St, San Francisco, CA 94115
- Phone
- (415) 923-3327
- Enumerated
- Jul 24, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150723009127); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 2340 Clay St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joe Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G46287Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average psychiatry physician in 2024
506 Medicare Part D claims for 40 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Dextroamphetamine-Amphetamine53 claims
- Bupropion Xl38 claims
- Aripiprazole37 claims
- Clonazepam33 claims
- Venlafaxine Hcl Er26 claims
- Lorazepam25 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 2 group practices
- Integrative Behavioral Health And Medicine IncPalo Alto, CA
- United Psychiatry, Inc.Los Altos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joe Walker among 8,673 psychiatry physician records in California
Joe Walker, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1980 · median 2005 among the 3,295 with a school on file
- Record last updated2007 · 54% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
763 psychiatry physician records list a practice address in San Francisco
They are 763 of the 38,143 NPPES records with a practice address in San Francisco, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in San Francisco → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Julia Adler, MDSan Francisco, CA 941151417992694
- Bruce Baker, MDSan Francisco, CA 941151346283926
- Stephen Brockway, MDSan Francisco, CA 941151346213394
- Hideki Chin, M.D.San Francisco, CA 941151922028885
- Frederick Huang, MDSan Francisco, CA 941151922038405
- Salma Khan, M.D.San Francisco, CA 941151114914918
- Adair Look, M.D.San Francisco, CA 941151740207521
- Heather Muhr, D.O.San Francisco, CA 941151336166057
Common questions
What is Joe Walker, M.D.'s NPI number?
Joe Walker, M.D.'s National Provider Identifier (NPI) is 1427070754, issued on Jul 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joe Walker, M.D. located?
The NPPES record lists a practice address at 2340 Clay St, San Francisco, CA, 94115. Phone: (415) 923-3327. Providers update this record themselves, so call before visiting.
How can I verify Joe Walker, M.D.'s license?
NPPES lists California license number G46287, 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 Joe Walker, M.D. prescribe under Medicare Part D?
In 2024, Joe Walker, M.D. had 506 Medicare Part D claims for 40 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.