Diem Quynh Pham, D.O.
NPI 1255421335ActiveIndividual· Dermatology, Procedural Dermatology· Chino Hills, CA
Dermatology, Procedural Dermatology (D.O.) in Chino Hills, California, trained at College of Osteo Med of the Pacific at Pomona (class of 1997). 183 Medicare patients in 2024, $87,983 paid; nearly all of their 471 Part D prescriptions were generic (96%). Leo Pharma Inc. was the largest of 16 companies reporting payments in 2025, $2,532 in all, mostly food and beverage.
Overview
| NPI | 1255421335 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Oct 13, 2006 |
| Last updated in NPPES | May 13, 2026 |
| Certified by provider | May 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology, Procedural Dermatology Primary | 207NS0135X | 20A7309 | 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 - Dermatology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 183 |
|---|---|
| Services billed | 2,039 across 33 procedure codes |
| Paid by Medicare | $87,983 |
Part D prescriptions in 2024
| Prescriptions (claims) | 471 · 539 30-day fills |
|---|---|
| Patients | 138 |
| Total drug cost | $34,657 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | College of Osteo Med of the Pacific at Pomona |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Dermatology |
Medical group
- Sand Dermatology PCOrange, CA · 6 clinicians
Industry payments (Open Payments)
- 2025$2,532 · 114 payments from 16 companies
- 2024$1,605 · 87 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Leo Pharma Inc. | $727.35 | 39 |
| Incyte Corporation | $396.53 | 19 |
| Genzyme Corporation | $351.92 | 8 |
| Abbvie Inc. | $187.80 | 6 |
| Arcutis Biotherapeutics, Inc. | $187.70 | 10 |
What the 2025 payments were for
- Food and Beverage$2,460 · 113 payments
- Education$72.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records