Mark Jacobs, PA
Physician Assistant · Modesto, CA
Mark Jacobs, PA is a physician assistant with a practice address in Modesto, California, and NPI 1346359866, issued on Aug 29, 2006. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Jacobs
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- PA.1502 AL
15-01583 KS
Self-reported in NPPES; status is on the state search - Practice location
- 1541 Florida Ave Ste 305, Modesto, CA 95350
- Phone
- (209) 575-5833
- Enumerated
- Aug 29, 2006
- Record last updated
- Apr 4, 2024
- Fax
- (209) 575-5836
- Medicaid ID
- 9500618500 KY
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 1541 Florida Ave Ste 305
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Jacobs in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average physician assistant in 2024
142 Medicare Part D claims for 39 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Metoprolol Tartrate18 claims
- Clopidogrel16 claims
- Potassium Chloride14 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.
Mark Jacobs among 14,451 physician assistant records in California
Mark Jacobs, PA 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 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2024 · 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).
122 physician assistant records list a practice address in Modesto
They are 122 of the 9,262 NPPES records with a practice address in Modesto, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Modesto → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kevin Bailey, P.A-CModesto, CA 953501891740007
- Shannon Gillespie, P.A-CModesto, CA 953501063459683
- Leslie Halseth, PAModesto, CA 953501760445589
- Nancy Howard, P.A-CModesto, CA 953501649225871
- Jason James, P.A-CModesto, CA 953501114972478
- Richard Kelley, PA-CModesto, CA 953501558316786
- Rosemarie Kelley, PA-CModesto, CA 953501407942097
- Ellen McKelsonModesto, CA 953501881754810
Common questions
What is Mark Jacobs, PA's NPI number?
Mark Jacobs, PA's National Provider Identifier (NPI) is 1346359866, issued on Aug 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Jacobs, PA located?
The NPPES record lists a practice address at 1541 Florida Ave Ste 305, Modesto, CA, 95350. Phone: (209) 575-5833. Providers update this record themselves, so call before visiting.
How can I verify Mark Jacobs, PA's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Jacobs, PA prescribe under Medicare Part D?
In 2024, Mark Jacobs, PA had 142 Medicare Part D claims for 39 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.