Jeffrey Joon-Bum So, MS, PA-C
NPI 1659600799ActiveIndividual· Physician Assistant, Medical· Beverly Hills, CA
Physician Assistant, Medical (MS, PA-C) with Golden State Dermatology Associates, Inc., practicing in Beverly Hills, California. 448 Medicare patients in 2024, $471,166 paid; nearly all of their 204 Part D prescriptions were generic (95%). Organogenesis Inc. was the largest of 22 companies reporting payments in 2025, $2,968 in all, mostly food and beverage.
Overview
| NPI | 1659600799 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MS, PA-C |
| Sole proprietor | No |
| NPI issued | Dec 21, 2009 |
| Last updated in NPPES | Dec 21, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | PA20727 | 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 | 448 |
|---|---|
| Services billed | 2,293 across 54 procedure codes |
| Paid by Medicare | $471,166 |
Part D prescriptions in 2024
| Prescriptions (claims) | 204 · 233 30-day fills |
|---|---|
| Patients | 132 |
| Total drug cost | $87,917 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Golden State Dermatology Associates, Inc.Saint Helena, CA · 125 clinicians
Industry payments (Open Payments)
- 2025$2,968 · 105 payments from 22 companies
- 2024$2,873 · 75 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organogenesis Inc. | $519.23 | 27 |
| E.R. Squibb & Sons, L.L.C. | $452.61 | 12 |
| Ucb, Inc. | $373.56 | 20 |
| Sun Pharmaceutical Industries Inc. | $274.13 | 6 |
| Galderma Laboratories, L.P. | $179.74 | 4 |
What the 2025 payments were for
- Food and Beverage$2,862 · 103 payments
- Education$99.99 · 1 payment
- Travel and Lodging$6.03 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 33 physician assistants in Beverly Hills · All physician assistants in California