Joseph John Kosmach, DO
Psychiatry Physician · San Diego, CA
Joseph John Kosmach, DO is a psychiatry physician with a practice address in San Diego, California, and NPI 1801233911, issued on May 30, 2013. Check the license (California 20A16558, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph John Kosmach
- Credential
- DO
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 20A16558 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7850 Vista Hill Ave, San Diego, CA 92123
- Phone
- (619) 294-4119
- Enumerated
- May 30, 2013
- Record last updated
- Mar 18, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (619) 295-5044
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 7850 Vista Hill Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisette Alder, LMFTMarriage & Family Therapist1194558775
- Vicky Borck, D.O.Psychiatry Physician1306939038
- John Borman, M.D.Psychiatry Physician1669508727
- Mary Beth Bryan, PSYDClinical Psychologist1417134347
- Nadia Bukar, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1982979340
- Paulette Cazares, M.D., MPHInternal Medicine Physician1710927470
Verify Joseph John Kosmach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A16558Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average psychiatry physician in 2024
32 Medicare Part D claims, against an average of 1,000 among the 35,054 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.
Joseph John Kosmach among 8,673 psychiatry physician records in California
Joseph John Kosmach, DO 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 2013, is newer than 69% of them.
- NPI issued2013 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2019 · 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
- John Aldous, MDSan Diego, CA 921231831245414
- Vicky Borck, D.O.San Diego, CA 921231306939038
- Camellia Clark, M.D.San Diego, CA 921231174624399
- Nicodemus Garcia, MDSan Diego, CA 921231669478400
- Daniel Gardner, MDSan Diego, CA 921231134103591
- Asher Gorelik, M.D.San Diego, CA 921231902910649
- Thomas Hessling, M.D.San Diego, CA 921231972659191
- Syed Jafar, M.D.San Diego, CA 921231164437521
Common questions
What is Joseph John Kosmach, DO's NPI number?
Joseph John Kosmach, DO's National Provider Identifier (NPI) is 1801233911, issued on May 30, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Joseph John Kosmach, DO located?
The NPPES record lists a practice address at 7850 Vista Hill Ave, San Diego, CA, 92123. Phone: (619) 294-4119. Providers update this record themselves, so call before visiting.
How can I verify Joseph John Kosmach, DO's license?
NPPES lists California license number 20A16558, 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 Joseph John Kosmach, DO prescribe under Medicare Part D?
In 2024, Joseph John Kosmach, DO had 32 Medicare Part D claims; 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.