Carmen Cotsis, PA-C
Physician Assistant · Los Alamos, CA
Carmen Cotsis, PA-C is a physician assistant with a practice address in Los Alamos, California, and NPI 1801456785, issued on Jun 13, 2019. Check the license (California 57001, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carmen Cotsis
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 57001 CA
Self-reported in NPPES; status is on the state search - Practice location
- 490 Bell St Unit 103, Los Alamos, CA 93440
- Phone
- (805) 344-4994
- Enumerated
- Jun 13, 2019
- Record last updated
- Nov 17, 2025
- Fax
- (805) 344-4996
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 490 Bell St Unit 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lizbeth Martinez, NPFamily Nurse Practitioner1033839907
Verify Carmen Cotsis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 57001Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average physician assistant in 2024
363 Medicare Part D claims for 159 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Amoxicillin-Clavulanate Potass29 claims
- Prednisone29 claims
- Sulfamethoxazole-Trimethoprim19 claims
- Albuterol Sulfate Hfa18 claims
- Fluticasone Propionate18 claims
- Nitrofurantoin Mono-Macro18 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.
Carmen Cotsis among 14,451 physician assistant records in California
Carmen Cotsis, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 56% of them.
- NPI issued2019 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physician Assistant providers in California
There are 14,451 physician assistant records in California.
The 8 physician assistant records with the nearest ZIP codes
- Jason Sajulan, PA-CMorro Bay, CA 934421356900948
- Melinda Boyd, PA-CVandenberg Afb, CA 934371750714168
- Melissa JordanVandenberg Afb, CA 934371750096582
- Amy Leiter, PA-CVandenberg Afb, CA 934371104587567
- Skyler Mott, PA-CVandenberg Afb, CA 934371205582160
- Jacob Winchester, PA STUDENTVandenberg Afb, CA 934371063282440
- Marisa Ayers, PANipomo, CA 934441194001990
- Kyle Cohen, PANipomo, CA 934441316509193
Common questions
What is Carmen Cotsis, PA-C's NPI number?
Carmen Cotsis, PA-C's National Provider Identifier (NPI) is 1801456785, issued on Jun 13, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Carmen Cotsis, PA-C located?
The NPPES record lists a practice address at 490 Bell St Unit 103, Los Alamos, CA, 93440. Phone: (805) 344-4994. Providers update this record themselves, so call before visiting.
How can I verify Carmen Cotsis, PA-C's license?
NPPES lists California license number 57001, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Carmen Cotsis, PA-C prescribe under Medicare Part D?
In 2024, Carmen Cotsis, PA-C had 363 Medicare Part D claims for 159 beneficiaries; the average among physician assistant prescribers was 830. 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.