Carlos Isaac Villarreal, PA
Physician Assistant · Los Angeles, CA
Carlos Isaac Villarreal, PA is a physician assistant with a practice address in Los Angeles, California, and NPI 1629301601, issued on Sep 9, 2009. Check the license (California 20538, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carlos Isaac Villarreal
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 20538 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3612 1/2 E 1St St, Los Angeles, CA 90063
- Phone
- (323) 264-7796
- Enumerated
- Sep 9, 2009
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (323) 264-7778
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 3612 1/2 E 1St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mariam Clark, NPFamily Nurse Practitioner1619370194
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- Maida Jackson, FNPFamily Nurse Practitioner1043945157
- Frank Jimenez, PA-CPhysician Assistant1184018566
- Erika Lepe, PA-CPhysician Assistant1356648968
Verify Carlos Isaac Villarreal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 20538Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 83.2 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).
Carlos Isaac Villarreal among 14,451 physician assistant records in California
Carlos Isaac Villarreal, 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 2009, is newer than 25% of them.
- NPI issued2009 · 25% of these records are older, 73% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- 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).
935 physician assistant records list a practice address in Los Angeles
They are 935 of the 69,537 NPPES records with a practice address in Los Angeles, and 14,451 physician assistant records in California.
All 14,451 in California → Every provider in Los Angeles → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Shokoor Abrahim, P.A.Los Angeles, CA 900631912083924
- Bung Joo Choi, PALos Angeles, CA 900631851615371
- Jamie GabrielLos Angeles, CA 900631285598755
- Jose HernandezLos Angeles, CA 900631942619325
- Frank Jimenez, PA-CLos Angeles, CA 900631184018566
- Erika Lepe, PA-CLos Angeles, CA 900631356648968
- Jaime MartinezLos Angeles, CA 900631821398116
- Jacqueline Chu, PALos Angeles, CA 900641295314342
Common questions
What is Carlos Isaac Villarreal, PA's NPI number?
Carlos Isaac Villarreal, PA's National Provider Identifier (NPI) is 1629301601, issued on Sep 9, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Carlos Isaac Villarreal, PA located?
The NPPES record lists a practice address at 3612 1/2 E 1St St, Los Angeles, CA, 90063. Phone: (323) 264-7796. Providers update this record themselves, so call before visiting.
How can I verify Carlos Isaac Villarreal, PA's license?
NPPES lists California license number 20538, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
What is Carlos Isaac Villarreal, PA's MIPS final score?
The 2023 MIPS final score is 83.2 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.