NPPES file of Aug 9, 2026

Gustavo Villegas, PA

Physician Assistant · Oroville, CA

Gustavo Villegas, PA is a physician assistant with a practice address in Oroville, California, and NPI 1891886107, issued on Sep 28, 2006. Check the license (California PA 14599, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891886107
Name
Gustavo Villegas
Credential
PA
Primary taxonomy
Physician Assistant 363A00000X
License number
PA 14599 CA
Self-reported in NPPES; status is on the state search
Practice location
2767 Olive Highway, Oroville, CA 95966
Phone
(530) 533-8500
Enumerated
Sep 28, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(530) 532-8433
Medicare enrollment
Enrolled (PECOS I20230613002905); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2767 Olive Highway

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Danielle Aaroe, FAMILY NURSE PRACTITFamily Nurse Practitioner1750767083
  2. Laila Chandy, MDAnatomic Pathology & Clinical Pathology Physician1760590301
  3. Olivia Farnworth, CRNACertified Registered Nurse Anesthetist1649168857
  4. David Hall, MDEmergency Medicine Physician1417993502
  5. Howard McArthur, PAPhysician Assistant1366510331
  6. Michael Merwin, MDAnatomic Pathology & Clinical Pathology Physician1326158445

Verify Gustavo Villegas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PA 14599
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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47% more Medicare Part D claims than the average physician assistant in 2024

1,224 Medicare Part D claims for 149 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.

  1. Gustavo Villegas1,224
  2. Specialty average830

Most prescribed

  1. Atorvastatin Calcium59 claims
  2. Trulicity58 claims
  3. Meloxicam47 claims
  4. Lisinopril42 claims
  5. Metformin Hcl41 claims
  6. Omeprazole41 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.

Industry payments in 2024: $759.69

14 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gustavo Villegas$759.69
  2. Specialty average$841.65

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Orchard HospitalGridley, CA · Critical Access Hospitals

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).

Gustavo Villegas among 14,451 physician assistant records in California

Gustavo Villegas, 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 2006, is newer than 1% of them.

  • NPI issued2006 · 1% of these records are older, 87% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated1998 · median 2018 among the 7,214 with a school on file
  • 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).

36 physician assistant records list a practice address in Oroville

They are 36 of the 916 NPPES records with a practice address in Oroville, and 14,451 physician assistant records in California.

The 8 physician assistant records with the nearest ZIP codes

  1. Michael Bauguess, PAOroville, CA 959661912986647
  2. Clay Craig, PAOroville, CA 959661699887778
  3. Steve Krikoriantz, PAOroville, CA 959661780786657
  4. Howard McArthur, PAOroville, CA 959661366510331
  5. Xuan Nguyen, PAOroville, CA 959661154456309
  6. Julie Nickelson, PA-COroville, CA 959661750695904
  7. Scott Perryman, PA-COroville, CA 959661962700682
  8. Paul Robie, PAOroville, CA 959661275644635

Common questions

What is Gustavo Villegas, PA's NPI number?

Gustavo Villegas, PA's National Provider Identifier (NPI) is 1891886107, issued on Sep 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gustavo Villegas, PA located?

The NPPES record lists a practice address at 2767 Olive Highway, Oroville, CA, 95966. Phone: (530) 533-8500. Providers update this record themselves, so call before visiting.

How can I verify Gustavo Villegas, PA's license?

NPPES lists California license number PA 14599, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Gustavo Villegas, PA prescribe under Medicare Part D?

In 2024, Gustavo Villegas, PA had 1,224 Medicare Part D claims for 149 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.