John J. Willis, PA-C
Medical Physician Assistant · Yuba City, CA
John J. Willis, PA-C is a medical physician assistant with a practice address in Yuba City, California, and NPI 1831149194, issued on May 10, 2006. Check the license (California PA13636, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John J. Willis
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA13636 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1429 Colusa Hwy, Yuba City, CA 95993
- Phone
- (530) 674-7000
- Enumerated
- May 10, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (530) 755-3219
- Medicare enrollment
- Enrolled (PECOS I20050708000435); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 3,376 in California → Look up another NPI →
Also registered at 1429 Colusa Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Faafouina Afato, M.D.Family Medicine Physician1023075348
- Maqsud Dean, MS, PA-CPhysician Assistant1336211333
- Leah Onstott, NPFamily Nurse Practitioner1902133713
Verify John J. Willis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PA13636Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average medical physician assistant in 2024
948 Medicare Part D claims for 104 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 11 claims were for opioids.
Most prescribed
- Amlodipine Besylate39 claims
- Gabapentin39 claims
- Losartan Potassium38 claims
- Albuterol Sulfate Hfa36 claims
- Lisinopril29 claims
- Ibuprofen25 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: $3,680.60
178 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 16,165 providers of this specialty with any payment received $1,055.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Jasbir S Kang MD And Sanjiv Midha MD A Medical CorporationMarysville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John J. Willis among 3,376 medical physician assistant records in California
John J. Willis, PA-C is one of 3,376 medical physician assistant records with a practice address in California. 69% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 80% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 40% of these records are
- Graduated1977 · median 2012 among the 1,347 with a school on file
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in California
There are 3,376 medical physician assistant records in California.
All 3,376 in California → Every provider in Yuba City → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Dana Aman, PA-CYuba City, CA 959911164060182
- Ashlyn Carmack, PA-CYuba City, CA 959911699133504
- Sandra Day, P.A.Yuba City, CA 959911346364841
- Rachel Holmes, PA-CYuba City, CA 959911457742249
- Divya Kolli, PA-CYuba City, CA 959911811340391
- Christopher Pacheco, PAYuba City, CA 959911215412655
- Suellen Stenhouse, PAYuba City, CA 959911568565489
- Andrita Stokes, PA-CYuba City, CA 959911861804239
Common questions
What is John J. Willis, PA-C's NPI number?
John J. Willis, PA-C's National Provider Identifier (NPI) is 1831149194, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John J. Willis, PA-C located?
The NPPES record lists a practice address at 1429 Colusa Hwy, Yuba City, CA, 95993. Phone: (530) 674-7000. Providers update this record themselves, so call before visiting.
How can I verify John J. Willis, PA-C's license?
NPPES lists California license number PA13636, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does John J. Willis, PA-C prescribe under Medicare Part D?
In 2024, John J. Willis, PA-C had 948 Medicare Part D claims for 104 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.