Mark S. Kosins, MD
Psychiatry Physician · San Clemente, CA
Mark S. Kosins, MD is a psychiatry physician with a practice address in San Clemente, California, and NPI 1457424954, issued on Nov 15, 2006. Check the license (California A25406, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark S. Kosins
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A25406 CA
Self-reported in NPPES; status is on the state search - Practice location
- 647 Camino DE Los Mares, San Clemente, CA 92673
- Phone
- (949) 489-9898
- Enumerated
- Nov 15, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 489-2569
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 647 Camino DE Los Mares
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Richard HugginsSpecialist1881091023
- Julie Nelson, ACUPUNCTURISTAcupuncturist1629240601
- Michelle Paul, PTA, ATCPhysical Therapy Assistant1659332880
Verify Mark S. Kosins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A25406Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% more Medicare Part D claims than the average psychiatry physician in 2024
1,462 Medicare Part D claims for 78 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. 14 claims were for opioids.
Most prescribed
- Alprazolam81 claims
- Dextroamphetamine-Amphetamine81 claims
- Lorazepam81 claims
- Bupropion Xl65 claims
- Clonazepam64 claims
- Quetiapine Fumarate57 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: $649.55
35 payments; by number, the most common kind was food and beverage; the largest payer was Almatica Pharma LLC. 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.
Mark S. Kosins among 8,673 psychiatry physician records in California
Mark S. Kosins, 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 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 fileNo · 38% of these records are
- 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).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in San Clemente → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Evelyn Johnson, DOSan Clemente, CA 926731346254869
- Abbie Bates, DNPSan Clemente, CA 926721073338521
- Martin Johnson, M.D.San Clemente, CA 926721295957660
- Thomas Klotz, M.D.San Clemente, CA 926721396109179
- Sanjay Dube, MDSan Juan Capistrano, CA 926751184292930
- F. Hullett, M.D.San Juan Capistrano, CA 926751366638587
- Gerald Maguire, MDSan Juan Capistraco, CA 926751144300302
- Kwitka Peratt, M.D.San Juan Capistrano, CA 926751770723553
Common questions
What is Mark S. Kosins, MD's NPI number?
Mark S. Kosins, MD's National Provider Identifier (NPI) is 1457424954, issued on Nov 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark S. Kosins, MD located?
The NPPES record lists a practice address at 647 Camino DE Los Mares, San Clemente, CA, 92673. Phone: (949) 489-9898. Providers update this record themselves, so call before visiting.
How can I verify Mark S. Kosins, MD's license?
NPPES lists California license number A25406, 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 Mark S. Kosins, MD prescribe under Medicare Part D?
In 2024, Mark S. Kosins, MD had 1,462 Medicare Part D claims for 78 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.