Lester Jen Yip Ma
NPI 1336800275ActiveIndividual· Physician Assistant, Surgical· Oakland, CA
Physician Assistant, Surgical with Golden State Orthopedics and Spine, practicing in Oakland, California. 358 Medicare patients in 2024, $79,016 paid; all of their 816 Part D prescriptions were generic. Orthofix Medical, Inc. was the largest of 3 companies reporting payments in 2025, $86.09 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1336800275 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Jan 3, 2022 |
| Last updated in NPPES | Jul 1, 2023 |
| Certified by provider | Jul 1, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Surgical Primary | 363AS0400X | 62526 | 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 | 358 |
|---|---|
| Services billed | 1,192 across 53 procedure codes |
| Paid by Medicare | $79,016 |
Part D prescriptions in 2024
| Prescriptions (claims) | 816 · 861 30-day fills |
|---|---|
| Patients | 208 |
| Total drug cost | $10,513 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Golden State Orthopedics and SpineCampbell, CA · 182 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- San Ramon Regional Medical CenterSan Ramon, CA
Industry payments (Open Payments)
- 2025$86.09 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Orthofix Medical, Inc. | $36.55 | 1 |
| Evolution Surgical, Inc | $30.01 | 1 |
| Endo USA, Inc. | $19.53 | 1 |
What the 2025 payments were for
- Food and Beverage$86.09 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 40 surgical physician assistants in Oakland · All surgical physician assistants in California