Jeffrey Robert Chavez, PA-C
Physician Assistant · Antioch, CA
Jeffrey Robert Chavez, PA-C is a physician assistant with a practice address in Antioch, California, and NPI 1023644507, issued on Mar 17, 2020. Check the license (California 57746, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Robert Chavez
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 57746 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4501 Sand Creek RD, Antioch, CA 94531
- Phone
- (925) 389-7719
- Enumerated
- Mar 17, 2020
- Record last updated
- Dec 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210923002464); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 4501 Sand Creek RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Lloyd Asuncion, MDInternal Medicine Physician1437353034
Verify Jeffrey Robert Chavez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 57746Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average physician assistant in 2024
136 Medicare Part D claims for 80 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 66 claims were for opioids.
Most prescribed
- Oxycodone Hcl63 claims
- Ibuprofen41 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.
Bills Medicare through one group practice
- Permanente Medical Group IncAntioch, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffrey Robert Chavez among 14,451 physician assistant records in California
Jeffrey Robert Chavez, 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 2020, is newer than 62% of them.
- NPI issued2020 · 62% of these records are older, 33% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2019 · median 2018 among the 7,214 with a school on file
- Record last updated2021 · 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).
27 physician assistant records list a practice address in Antioch
They are 27 of the 2,184 NPPES records with a practice address in Antioch, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Antioch → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Donna Louie, PAAntioch, CA 945311558742171
- Elizabeth Morgan, PA-CAntioch, CA 945311053917963
- Sumeet Singh, PAAntioch, CA 945311124401997
- Genise Swain, PA-CEl Cerrito, CA 945301740623867
- Lyubov Lupyan-Teytelman, P.A.Fairfield, CA 945331033230693
- Shannon Malouf, PA-CFairfield, CA 945331063857977
- Le'Anna Paul, PA-CFairfield, CA 945331740358605
- Auxsophene Portier-Jones, PAFairfield, CA 945331972662674
Common questions
What is Jeffrey Robert Chavez, PA-C's NPI number?
Jeffrey Robert Chavez, PA-C's National Provider Identifier (NPI) is 1023644507, issued on Mar 17, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Robert Chavez, PA-C located?
The NPPES record lists a practice address at 4501 Sand Creek RD, Antioch, CA, 94531. Phone: (925) 389-7719. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Robert Chavez, PA-C's license?
NPPES lists California license number 57746, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Jeffrey Robert Chavez, PA-C prescribe under Medicare Part D?
In 2024, Jeffrey Robert Chavez, PA-C had 136 Medicare Part D claims for 80 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.