Joan Stillman McCormac, PAC
Physician Assistant · Downey, CA
Joan Stillman McCormac, PAC is a physician assistant with a practice address in Downey, California, and NPI 1457556490, issued on Jun 19, 2007. Check the license (California PA15308, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Joan Stillman McCormac
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA15308 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7601 Imperial Hwy, Downey, CA 90242
- Phone
- (562) 401-6210
- Enumerated
- Jun 19, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 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 7601 Imperial Hwy
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Verify Joan Stillman McCormac in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA15308Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Joan Stillman McCormac among 14,451 physician assistant records in California
Joan Stillman McCormac, PAC 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 not. Its NPI, issued in 2007, is newer than 13% of them.
- NPI issued2007 · 13% of these records are older, 78% newer
- In a Medicare fileNo · 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).
49 physician assistant records list a practice address in Downey
They are 49 of the 3,607 NPPES records with a practice address in Downey, and 14,451 physician assistant records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 14,451 in California → Every provider in Downey → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Hilarie Beattie, PADowney, CA 902421215053459
- Robert Boucher, PADowney, CA 902421144364340
- Chris Ediss, PA-CDowney, CA 902421639374671
- Deniche Francis, PA-CDowney, CA 902421205044104
- Dudley FukunagaDowney, CA 902421629219282
- Mondana Hatzidakis, PA-CDowney, CA 902421689820037
- Roberto Mendoza, P.A.Downey, CA 902421669403150
- Maureen Ohara, PACDowney, CA 902421215019575
Common questions
What is Joan Stillman McCormac, PAC's NPI number?
Joan Stillman McCormac, PAC's National Provider Identifier (NPI) is 1457556490, issued on Jun 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joan Stillman McCormac, PAC located?
The NPPES record lists a practice address at 7601 Imperial Hwy, Downey, CA, 90242. Phone: (562) 401-6210. Providers update this record themselves, so call before visiting.
How can I verify Joan Stillman McCormac, PAC's license?
NPPES lists California license number PA15308, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.