Alan John Hsu, M.D.
Psychiatry Physician · San Diego, CA
Alan John Hsu, M.D. is a psychiatry physician with a practice address in San Diego, California, and NPI 1861636763, issued on Apr 23, 2009. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alan John Hsu
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 258609 NY
Self-reported in NPPES; status is on the state search - Practice location
- 8810 Rio San Diego Dr, San Diego, CA 92108
- Phone
- (619) 400-5000
- Enumerated
- Apr 23, 2009
- Record last updated
- Aug 13, 2014 (not updated in 12 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 8810 Rio San Diego Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Niloofar Afari, PHDPsychologist1275557621
- Patience Allison, LCSWClinical Social Worker1093046682
- David Bittleman, MDInternal Medicine Physician1700858479
- Mary Bowman, FNPFamily Nurse Practitioner1861405334
- Jessica Brian, LCSWClinical Social Worker1003923483
- Edward Busch, M.D.Surgery Physician1720001241
Verify Alan John Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average psychiatry physician in 2024
216 Medicare Part D claims for 29 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Trazodone Hcl26 claims
- Lorazepam23 claims
- Alprazolam17 claims
- Venlafaxine Hcl Er17 claims
- Mirtazapine16 claims
- Escitalopram Oxalate15 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.
Alan John Hsu among 8,673 psychiatry physician records in California
Alan John Hsu, 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 2009, is newer than 57% of them.
- NPI issued2009 · 57% of these records are older, 40% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2014 · 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).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in San Diego → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Michael Bailey, M.D.San Diego, CA 921081891885653
- Karen Brown, M.D.San Diego, CA 921081033133210
- Matthew Carroll, M.D.San Diego, CA 921081225139314
- Ruchira Densert, MDSan Diego, CA 921081538148697
- Gary Eaton, MDSan Diego, CA 921081962442996
- Thomas Flanagan, MDSan Diego, CA 921081154361061
- Joshua Golden, M.D., F.A.P.A.San Diego, CA 921081720008998
- Fernando Kwiatkowski, MDSan Diego, CA 921081346297249
Common questions
What is Alan John Hsu, M.D.'s NPI number?
Alan John Hsu, M.D.'s National Provider Identifier (NPI) is 1861636763, issued on Apr 23, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Alan John Hsu, M.D. located?
The NPPES record lists a practice address at 8810 Rio San Diego Dr, San Diego, CA, 92108. Phone: (619) 400-5000. Providers update this record themselves, so call before visiting.
How can I verify Alan John Hsu, M.D.'s license?
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 Alan John Hsu, M.D. prescribe under Medicare Part D?
In 2024, Alan John Hsu, M.D. had 216 Medicare Part D claims for 29 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.