Kendall G. Butz, PHYSICIAN ASSISTANT
NPI 1801575543ActiveIndividual· Physician Assistant· Walnut Creek, CA
Physician Assistant (PHYSICIAN ASSISTANT) with Allergy and Asthma Medical Group of the Bay Area Inc, practicing in Walnut Creek, California. Their prescriptions cost Medicare Part D more than their services did: $127,381 for 688 claims, against $32,147 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 18 companies reporting payments in 2025, $1,958 in all, mostly food and beverage. Lists Stanford Health Care as a hospital affiliation.
Overview
| NPI | 1801575543 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PHYSICIAN ASSISTANT |
| Sole proprietor | No |
| NPI issued | Jul 11, 2023 |
| Last updated in NPPES | Aug 28, 2023 |
| Certified by provider | Aug 28, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 189 |
|---|---|
| Services billed | 972 across 14 procedure codes |
| Paid by Medicare | $32,147 |
Part D prescriptions in 2024
| Prescriptions (claims) | 688 · 1,037 30-day fills |
|---|---|
| Patients | 292 |
| Total drug cost | $127,381 |
| Generic share | 63% of claims |
Education and affiliations
| Graduation year | 2023 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Allergy and Asthma Medical Group of the Bay Area IncBrentwood, CA · 20 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$1,958 · 91 payments from 18 companies
- 2024$1,224 · 52 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $664.86 | 45 |
| Genzyme Corporation | $276.30 | 9 |
| Glaxosmithkline, LLC. | $198.17 | 9 |
| Regeneron Healthcare Solutions, Inc. | $174.71 | 5 |
| Amgen Inc. | $137.66 | 5 |
What the 2025 payments were for
- Food and Beverage$1,930 · 89 payments
- Consulting Fee$19.61 · 1 payment
- Education$8.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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