Claudia Zajac, PA-C
Physician Assistant · Santa Ana, CA
Claudia Zajac, PA-C is a physician assistant with a practice address in Santa Ana, California, and NPI 1962120261, issued on Aug 22, 2022. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Claudia Zajac
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 210 N Tustin Ave, Santa Ana, CA 92705
- Phone
- (888) 959-5192
- Enumerated
- Aug 22, 2022
- Record last updated
- Oct 10, 2024
- Medicare enrollment
- Enrolled (PECOS I20250522002458); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 210 N Tustin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Claudia Zajac 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
91% fewer Medicare Part D claims than the average physician assistant in 2024
78 Medicare Part D claims for 61 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin13 claims
- Doxycycline Hyclate11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 54.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Sharp Rees-Stealy Medical Group IncChula Vista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Claudia Zajac among 14,451 physician assistant records in California
Claudia Zajac, PA-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. Its NPI, issued in 2022, is newer than 73% of them.
- NPI issued2022 · 73% of these records are older, 20% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2022 · median 2018 among the 7,214 with a school on file
- 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).
124 physician assistant records list a practice address in Santa Ana
They are 124 of the 8,904 NPPES records with a practice address in Santa Ana, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Santa Ana → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Anne Castle, P.A.Santa Ana, CA 927051669424206
- Robert Cha, PASanta Ana, CA 927051710098165
- Tracy Dau, PASanta Ana, CA 927051104855105
- Jennifer Desby, PA-CSanta Ana, CA 927051740392026
- Carie Ellison, PA-CSanta Ana, CA 927051447496906
- Theresa Henry, P.A-CSanta Ana, CA 927051942316757
- Alysha Henry-Johnson, PA-CSanta Ana, CA 927051659519601
- Bonnie Huckaby, MPAS, PA-CSanta Ana, CA 927051932109204
Common questions
What is Claudia Zajac, PA-C's NPI number?
Claudia Zajac, PA-C's National Provider Identifier (NPI) is 1962120261, issued on Aug 22, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Claudia Zajac, PA-C located?
The NPPES record lists a practice address at 210 N Tustin Ave, Santa Ana, CA, 92705. Phone: (888) 959-5192. Providers update this record themselves, so call before visiting.
How can I verify Claudia Zajac, PA-C's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Claudia Zajac, PA-C prescribe under Medicare Part D?
In 2024, Claudia Zajac, PA-C had 78 Medicare Part D claims for 61 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Claudia Zajac, PA-C's MIPS final score?
The 2023 MIPS final score is 54.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.