Tiffany Waters, P.A.
NPI 1184652695ActiveIndividual· Physician Assistant, Surgical· Walnut Creek, CA
Physician Assistant, Surgical (P.A.) with Sonora Community Hospital, practicing in Walnut Creek, California. 363 Medicare patients in 2024, $34,175 paid; nearly all of their 133 Part D prescriptions were generic (99%). Zimmer Biomet Holdings, Inc. was the largest of 3 companies reporting payments in 2025, $506.03 in all, mostly travel and lodging. Lists Adventist Health Sonora as a hospital affiliation.
Overview
| NPI | 1184652695 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | P.A. |
| Sole proprietor | No |
| NPI issued | Jun 30, 2006 |
| Last updated in NPPES | Nov 7, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Surgical Primary | 363AS0400X | PA17246 | CA |
| Physician Assistant, Medical | 363AM0700X | PA17246 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 363 |
|---|---|
| Services billed | 1,026 across 53 procedure codes |
| Paid by Medicare | $34,175 |
Part D prescriptions in 2024
| Prescriptions (claims) | 133 · 140 30-day fills |
|---|---|
| Patients | 85 |
| Total drug cost | $1,766 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Sonora Community HospitalSonora, CA · 133 clinicians
Hospital affiliation
- Adventist Health SonoraSonora, CA
Industry payments (Open Payments)
- 2025$506.03 · 3 payments from 3 companies
- 2024$15.02 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zimmer Biomet Holdings, Inc. | $372.10 | 1 |
| Astrazeneca Pharmaceuticals LP | $115.20 | 1 |
| Endo USA, Inc. | $18.73 | 1 |
What the 2025 payments were for
- Travel and Lodging$372.10 · 1 payment
- Food and Beverage$133.93 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 36 surgical physician assistants in Walnut Creek · All surgical physician assistants in California