Mary Lou Ernst-Woodhouse, DO
NPI 1225102452 · Dermatology Physician · Eau Claire, WI
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Lou Ernst-Woodhouse, DO is a Dermatology Physician provider in Eau Claire, WI (NPI 1225102452).
Provider details
- NPI number
- 1225102452
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- Yes
- License
- 20817 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 62 | 33 |
| Hydroxyzine Hcl | 31 | — |
| Hydrocortisone | 16 | — |
| Tacrolimus | 15 | — |
| Metronidazole | 14 | — |
| Calcipotriene | 12 | — |
| Ciclopirox Olaminebrand: Ciclopirox | 12 | — |
| Triamcinolone Acetonide | 12 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-20
- Last updated
- 2024-07-15
- Certified
- 2024-07-15
Frequently asked questions
- What is Mary Lou Ernst-Woodhouse's NPI number?
- Mary Lou Ernst-Woodhouse's National Provider Identifier (NPI) is 1225102452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Lou Ernst-Woodhouse's specialty?
- Mary Lou Ernst-Woodhouse is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Lou Ernst-Woodhouse located?
- Mary Lou Ernst-Woodhouse's practice location on file with NPPES is 1400 Bellinger St, Eau Claire, WI 54703-5222.
- What is Mary Lou Ernst-Woodhouse's phone number?
- The practice phone number listed in the NPPES registry for Mary Lou Ernst-Woodhouse is (715) 838-5222.
- Does Mary Lou Ernst-Woodhouse accept Medicare?
- Mary Lou Ernst-Woodhouse is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Lou Ernst-Woodhouse's NPI active?
- Yes — Mary Lou Ernst-Woodhouse's NPI (1225102452) is active in the NPPES registry as of the last update on 2024-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.