Ralph Christian Fenn, M.D., PH.D.
Psychiatry Physician · San Francisco, CA
Ralph Christian Fenn, M.D., PH.D. is a psychiatry physician with a practice address in San Francisco, California, and NPI 1659564201, issued on Aug 27, 2007. Check the license (California A79192, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ralph Christian Fenn
- Credential
- M.D., PH.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A79192 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1131 Irving St, San Francisco, CA 94122
- Phone
- (415) 379-0094
- Enumerated
- Aug 27, 2007
- Record last updated
- Mar 7, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1131 Irving St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alissa GibbinsMarriage & Family Therapist1063174589
- Teale TaxisMarriage & Family Therapist1235885674
- Irene Yancher, PSY.D.Clinical Psychologist1922440510
Verify Ralph Christian Fenn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A79192Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average psychiatry physician in 2024
308 Medicare Part D claims for 24 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Clonazepam42 claims
- Escitalopram Oxalate20 claims
- Quetiapine Fumarate18 claims
- Amantadine17 claims
- Aripiprazole16 claims
- Sertraline Hcl16 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.
Industry payments in 2024: $29.04
1 payment: food and beverage; the largest payer was ViiV Healthcare Company. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Ralph Christian Fenn among 8,673 psychiatry physician records in California
Ralph Christian Fenn, M.D., PH.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 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2013 · 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
- Allan Chinen, M.D.San Francisco, CA 941221780671586
- Janice Cohen, M.D.San Francisco, CA 941221164566295
- Anastasiya Daragan, MDSan Francisco, CA 941221790312577
- Peter Klaphaak, MDSan Francisco, CA 941221912192766
- Lois Parkison, M.D.San Francisco, CA 941221518904366
- Tatyana Yasnovsky, MDSan Francisco, CA 941221932275682
- Albert Bunn, M.D.San Francisco, CA 941211457404634
- Wesley Dunn, MDSan Francisco, CA 941211497809586
Common questions
What is Ralph Christian Fenn, M.D., PH.D.'s NPI number?
Ralph Christian Fenn, M.D., PH.D.'s National Provider Identifier (NPI) is 1659564201, issued on Aug 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ralph Christian Fenn, M.D., PH.D. located?
The NPPES record lists a practice address at 1131 Irving St, San Francisco, CA, 94122. Phone: (415) 379-0094. Providers update this record themselves, so call before visiting.
How can I verify Ralph Christian Fenn, M.D., PH.D.'s license?
NPPES lists California license number A79192, 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 Ralph Christian Fenn, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Ralph Christian Fenn, M.D., PH.D. had 308 Medicare Part D claims for 24 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.