Nicholas Ian Kos, MD
Psychiatry Physician · San Diego, CA
Nicholas Ian Kos, MD is a psychiatry physician with a practice address in San Diego, California, and NPI 1033799044, issued on Apr 13, 2021. Check the license (California 180850, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nicholas Ian Kos
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 180850 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 W Arbor Dr # 8809, San Diego, CA 92103
- Phone
- (619) 687-1067
- Enumerated
- Apr 13, 2021
- Record last updated
- Jun 3, 2023
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 200 W Arbor Dr # 8809
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rebekah Davis, MD, MPHStudent in an Organized Health Care Education/Training Program1114861077
- Medha Gudavalli, MDStudent in an Organized Health Care Education/Training Program1730939877
- Antionette GutierrezStudent in an Organized Health Care Education/Training Program1023804572
- Anna Warnock, MDStudent in an Organized Health Care Education/Training Program1629914213
Verify Nicholas Ian Kos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 180850Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average psychiatry physician in 2024
697 Medicare Part D claims for 85 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 12 claims were for opioids.
Most prescribed
- Gabapentin44 claims
- Quetiapine Fumarate35 claims
- Sertraline Hcl34 claims
- Olanzapine30 claims
- Aripiprazole28 claims
- Mirtazapine28 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.
Nicholas Ian Kos among 8,673 psychiatry physician records in California
Nicholas Ian Kos, MD 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 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 7% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2023 · 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
- Olga Becker, M.D.San Diego, CA 921031083644710
- Tahir Bhatti, M.D.San Diego, CA 921031518915487
- Gregory Bishop, M.D.San Diego, CA 921031003855545
- Joel Dimsdale, M.D.San Diego, CA 921031306877568
- Jeremy Hirst, M.D.San Diego, CA 921031073563714
- Katherine Immerman, M.D.San Diego, CA 921031023087939
- Walter Kaye, MDSan Diego, CA 921031922076223
- John Kelsoe, M.D.San Diego, CA 921031184672156
Common questions
What is Nicholas Ian Kos, MD's NPI number?
Nicholas Ian Kos, MD's National Provider Identifier (NPI) is 1033799044, issued on Apr 13, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Ian Kos, MD located?
The NPPES record lists a practice address at 200 W Arbor Dr # 8809, San Diego, CA, 92103. Phone: (619) 687-1067. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Ian Kos, MD's license?
NPPES lists California license number 180850, 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 Nicholas Ian Kos, MD prescribe under Medicare Part D?
In 2024, Nicholas Ian Kos, MD had 697 Medicare Part D claims for 85 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.