Michael S. Johnson, PA
Physician Assistant · Whittier, CA
Michael S. Johnson, PA is a physician assistant with a practice address in Whittier, California, and NPI 1497791263, issued on Jun 21, 2006. Check the license (California PA13952, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael S. Johnson
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA13952 CA
Self-reported in NPPES; status is on the state search - Practice location
- 12401 Washington Blvd, Whittier, CA 90602
- Phone
- (562) 698-0811
- Enumerated
- Jun 21, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (818) 587-2493
- Medicaid ID
- PA13952 CA
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 12401 Washington Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kariann Akiyama, MS, RDN, CNSCRegistered Dietitian1639870009
- Syed Ali, MDAnesthesiology Physician1295775625
- Jamee Ambariantz, PAPhysician Assistant1790726123
- Talin Azilazyan, PHARMDPharmacist1700739372
Verify Michael S. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA13952Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average physician assistant in 2024
80 Medicare Part D claims for 68 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Ibuprofen14 claims
- Diclofenac Sodium11 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.
Michael S. Johnson among 14,451 physician assistant records in California
Michael S. Johnson, 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 updated2007 · 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).
89 physician assistant records list a practice address in Whittier
They are 89 of the 2,836 NPPES records with a practice address in Whittier, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Whittier → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Jamee Ambariantz, PAWhittier, CA 906021790726123
- Maricela Berzunza, P.A.Whittier, CA 906021205060936
- Marietta Breaux, PA-CWhittier, CA 906021346563871
- Jennifer Faggionato, PAWhittier, CA 906021578508503
- Paula Meyer, PAWhittier, CA 906021255373783
- Oscar Norona, PA-CWhittier, CA 906021548598535
- James Panlilio, PAWhittier, CA 906021174833263
- Lisette Peralta, PA-CWhittier, CA 906021568770725
Common questions
What is Michael S. Johnson, PA's NPI number?
Michael S. Johnson, PA's National Provider Identifier (NPI) is 1497791263, issued on Jun 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael S. Johnson, PA located?
The NPPES record lists a practice address at 12401 Washington Blvd, Whittier, CA, 90602. Phone: (562) 698-0811. Providers update this record themselves, so call before visiting.
How can I verify Michael S. Johnson, PA's license?
NPPES lists California license number PA13952, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Michael S. Johnson, PA prescribe under Medicare Part D?
In 2024, Michael S. Johnson, PA had 80 Medicare Part D claims for 68 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.