Dorothy Tseng Yip, PA-C
NPI 1558654301ActiveIndividual· Physician Assistant· Walnut Creek, CA
Physician Assistant (PA-C) with Allergy and Asthma Medical Group of the Bay Area Inc, practicing in Walnut Creek, California. Part D covered 265 prescriptions written in 2024, 65% of them generic. Astrazeneca Pharmaceuticals LP was the largest of 16 companies reporting payments in 2025, $2,945 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1558654301 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | May 25, 2011 |
| Last updated in NPPES | Oct 22, 2024 |
| Certified by provider | Mar 23, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 52283 | 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) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 265 · 359 30-day fills |
|---|---|
| Patients | 78 |
| Total drug cost | $58,847 |
| Generic share | 65% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Allergy and Asthma Medical Group of the Bay Area IncBrentwood, CA · 20 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
Industry payments (Open Payments)
- 2025$2,945 · 94 payments from 16 companies
- 2024$1,934 · 68 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $671.49 | 25 |
| Ars Pharmaceuticals Operations, Inc. | $313.53 | 11 |
| Glaxosmithkline, LLC. | $289.57 | 4 |
| Genzyme Corporation | $232.75 | 5 |
| Csl Behring | $229.49 | 6 |
What the 2025 payments were for
- Food and Beverage$2,945 · 94 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 95 physician assistants in Walnut Creek · All physician assistants in California