Mark Jay Shannon, P.A.
Medical Physician Assistant · Sacramento, CA
Mark Jay Shannon, P.A. is a medical physician assistant with a practice address in Sacramento, California, and NPI 1225367519, issued on Dec 15, 2009. Check the license (California PA12702, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Jay Shannon
- Credential
- P.A.
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA12702 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1201 Alhambra Blvd, Sacramento, CA 95816
- Phone
- (916) 733-5090
- Enumerated
- Dec 15, 2009
- Record last updated
- Mar 7, 2023
- Fax
- (916) 733-5062
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 1201 Alhambra Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Jay Shannon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA12702Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average medical physician assistant in 2024
85 Medicare Part D claims for 33 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of 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 Jay Shannon among 3,376 medical physician assistant records in California
Mark Jay Shannon, P.A. is one of 3,376 medical physician assistant records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 38% of them.
- NPI issued2009 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% 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 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Sacramento → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Alvaro Aguirre, PASacramento, CA 958161700994597
- Linda Chiang, PASacramento, CA 958161376631911
- Gary Dunaye, P.A.Sacramento, CA 958161033324827
- Brian Estabrook, PA-CSacramento, CA 958161407842933
- Linda Lobianco, PA-CSacramento, CA 958161841362514
- Erich Madero-Schmidt, PASacramento, CA 958161225298961
- Madelyn Milton, PA-CSacramento, CA 958161336122431
- Van Nguyen, PA-CSacramento, CA 958161700838315
Common questions
What is Mark Jay Shannon, P.A.'s NPI number?
Mark Jay Shannon, P.A.'s National Provider Identifier (NPI) is 1225367519, issued on Dec 15, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark Jay Shannon, P.A. located?
The NPPES record lists a practice address at 1201 Alhambra Blvd, Sacramento, CA, 95816. Phone: (916) 733-5090. Providers update this record themselves, so call before visiting.
How can I verify Mark Jay Shannon, P.A.'s license?
NPPES lists California license number PA12702, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Jay Shannon, P.A. prescribe under Medicare Part D?
In 2024, Mark Jay Shannon, P.A. had 85 Medicare Part D claims for 33 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.