Theresa Mah, DO
NPI 1700991148 · Dermatology Physician · Vancouver, WA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Mah, DO is a Dermatology Physician provider in Vancouver, WA (NPI 1700991148).
Provider details
- NPI number
- 1700991148
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- OP00002137 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,519 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 435 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 413 | $128 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 243 | $58 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 216 | $90 |
| Destruction of Skin Growth, 1-14 Growths17110 | 85 | $111 |
| Biopsy of Related Skin Growth, First Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 293 | 191 |
| Clobetasol Propionate | 121 | 85 |
| Triamcinolone Acetonide | 107 | 96 |
| Metronidazole | 102 | 73 |
| Fluorouracil | 94 | 90 |
| Ciclopirox | 93 | 67 |
| Ciclopirox Olaminebrand: Ciclopirox | 93 | 53 |
| Mupirocin | 89 | 74 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-19
- Last updated
- 2007-11-23
Frequently asked questions
- What is Theresa Mah's NPI number?
- Theresa Mah's National Provider Identifier (NPI) is 1700991148, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Mah's specialty?
- Theresa Mah is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Theresa Mah located?
- Theresa Mah's practice location on file with NPPES is 700 Ne 87th Ave, Vancouver, WA 98664-1913.
- What is Theresa Mah's phone number?
- The practice phone number listed in the NPPES registry for Theresa Mah is (360) 254-1240.
- Does Theresa Mah accept Medicare?
- Theresa Mah is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Mah's NPI active?
- Yes — Theresa Mah's NPI (1700991148) is active in the NPPES registry as of the last update on 2007-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.