Joann Antoinette Deasy, P.A-C
Physician Assistant · San Mateo, CA
Joann Antoinette Deasy, P.A-C is a physician assistant with a practice address in San Mateo, California, and NPI 1821105776, issued on Aug 24, 2006. Check the license (California PA11096, 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
- Joann Antoinette Deasy
- Credential
- P.A-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA11096 CA
Self-reported in NPPES; status is on the state search - Practice location
- 222 W 39TH Ave, San Mateo, CA 94403
- Phone
- (650) 573-2671
- Enumerated
- Aug 24, 2006
- 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 →
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Verify Joann Antoinette Deasy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA11096Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Joann Antoinette Deasy among 14,451 physician assistant records in California
Joann Antoinette Deasy, P.A-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 not. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 87% 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).
Physician Assistant providers in California
There are 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 San Mateo → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Karen Ben-Nun, PA-CSan Mateo, CA 944031487833679
- Ariane Bosch, PA-CSan Mateo, CA 944031649753427
- Jessica Chu, PASan Mateo, CA 944031306257167
- Erin DanielSan Mateo, CA 944031578034633
- Kevin Eitel, PA-CSan Mateo, CA 944031811583263
- Maria De La Paz Guzman, P.A-CSan Mateo, CA 944031235246083
- Catherine HickeySan Mateo, CA 944031598232134
- Reema Patel, MPASan Mateo, CA 944031417194085
Common questions
What is Joann Antoinette Deasy, P.A-C's NPI number?
Joann Antoinette Deasy, P.A-C's National Provider Identifier (NPI) is 1821105776, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joann Antoinette Deasy, P.A-C located?
The NPPES record lists a practice address at 222 W 39TH Ave, San Mateo, CA, 94403. Phone: (650) 573-2671. Providers update this record themselves, so call before visiting.
How can I verify Joann Antoinette Deasy, P.A-C's license?
NPPES lists California license number PA11096, 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.