Theresa Mah, DO
NPI 1700991148ActiveIndividual· Dermatology· Vancouver, WA
Dermatology (DO) with The Vancouver Clinic Inc Ps, practicing in Vancouver, Washington. Their prescriptions cost Medicare Part D more than their services did: $430,595 for 1,624 claims, against $96,101 paid for services in 2024. Pfizer Inc. reported $119.19 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1700991148 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Aug 19, 2006 |
| Last updated in NPPES | Nov 23, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | OP00002137 | WA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Dermatology (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 421 |
|---|---|
| Services billed | 1,911 across 77 procedure codes |
| Paid by Medicare | $96,101 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,624 · 1,961 30-day fills |
|---|---|
| Patients | 593 |
| Total drug cost | $430,595 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Dermatology |
Medical group
- The Vancouver Clinic Inc PsVancouver, WA · 590 clinicians
Industry payments (Open Payments)
- 2025$119.19 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $119.19 | 2 |
What the 2025 payments were for
- Food and Beverage$119.19 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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