Mary Clark, DO
NPI 1912917949 · Internal Medicine Physician · La Crosse, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Clark, DO is a Internal Medicine Physician provider in La Crosse, WI (NPI 1912917949).
Provider details
- NPI number
- 1912917949
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 81803 (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
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 2121 North AveGrand Junction, CO 81501-6428Phone: (970) 242-0731Fax: (970) 248-5595
Registry dates
- Enumerated
- 2006-08-09
- Last updated
- 2025-10-16
- Certified
- 2025-10-16
Frequently asked questions
- What is Mary Clark's NPI number?
- Mary Clark's National Provider Identifier (NPI) is 1912917949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Clark's specialty?
- Mary Clark is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Clark located?
- Mary Clark's practice location on file with NPPES is 700 West Ave S, La Crosse, WI 54601-8806.
- What is Mary Clark's phone number?
- The practice phone number listed in the NPPES registry for Mary Clark is (608) 785-0940.
- Does Mary Clark accept Medicare?
- Mary Clark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Clark's NPI active?
- Yes — Mary Clark's NPI (1912917949) is active in the NPPES registry as of the last update on 2025-10-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.