Matthew John Kosel, PA-C
Physician Assistant · San Marcos, CA
Matthew John Kosel, PA-C is a physician assistant with a practice address in San Marcos, California, and NPI 1316947302, issued on Jul 30, 2005. Check the license (California PA17101, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew John Kosel
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA17101 CA
Self-reported in NPPES; status is on the state search - Practice location
- 150 Valpreda RD, San Marcos, CA 92069
- Phone
- (760) 789-1223
- Enumerated
- Jul 30, 2005
- Record last updated
- Oct 16, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 150 Valpreda RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lynda Ariella, PHDClinical Psychologist1073518965
- Maria BanuelosCase Manager/Care Coordinator1720280589
Verify Matthew John Kosel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA17101Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average physician assistant in 2024
129 Medicare Part D claims for 23 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa14 claims
- Atorvastatin Calcium14 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.
Matthew John Kosel among 14,451 physician assistant records in California
Matthew John Kosel, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 99% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2014 · 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).
26 physician assistant records list a practice address in San Marcos
They are 26 of the 1,985 NPPES records with a practice address in San Marcos, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in San Marcos → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Geraldine Dodge, PASan Marcos, CA 920691639335771
- Meredith Heidenfeld, PA-CSan Marcos, CA 920691417954108
- Miriam Hernandez, PASan Marcos, CA 920691457903700
- Gabriela Juache-Velasco, PA-CSan Marcos, CA 920691043830763
- Sarah Kay, PASan Marcos, CA 920691538634209
- Jennifer Levine, PHYSICIAN ASSISTANT-San Marcos, CA 920691316109614
- William Mathias, PA-CSan Marcos, CA 920691285806323
- Jennifer Montgomery, PA-CSan Marcos, CA 920691568658698
Common questions
What is Matthew John Kosel, PA-C's NPI number?
Matthew John Kosel, PA-C's National Provider Identifier (NPI) is 1316947302, issued on Jul 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Matthew John Kosel, PA-C located?
The NPPES record lists a practice address at 150 Valpreda RD, San Marcos, CA, 92069. Phone: (760) 789-1223. Providers update this record themselves, so call before visiting.
How can I verify Matthew John Kosel, PA-C's license?
NPPES lists California license number PA17101, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Matthew John Kosel, PA-C prescribe under Medicare Part D?
In 2024, Matthew John Kosel, PA-C had 129 Medicare Part D claims for 23 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.