John Willis, PA-C
NPI 1831149194 · Medical Physician Assistant · Yuba City, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Willis, PA-C is a Medical Physician Assistant provider in Yuba City, CA (NPI 1831149194).
Provider details
- NPI number
- 1831149194
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- License
- PA13636 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 39 | 12 |
| Amlodipine Besylate | 39 | 14 |
| Losartan Potassium | 38 | 16 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 36 | — |
| Lisinopril | 29 | — |
| Ibuprofen | 25 | 15 |
| Alprazolam |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,681 across 178 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Willis's NPI number?
- John Willis's National Provider Identifier (NPI) is 1831149194, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Willis's specialty?
- John Willis is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Willis located?
- John Willis's practice location on file with NPPES is 1429 Colusa Hwy, Yuba City, CA 95993-9092.
- What is John Willis's phone number?
- The practice phone number listed in the NPPES registry for John Willis is (530) 674-7000.
- Does John Willis accept Medicare?
- John Willis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Willis's NPI active?
- Yes — John Willis's NPI (1831149194) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.