IndividualActive
Mark Williams, M.D.
NPI 1326198623 · Family Medicine Physician · Eau Claire, WI
Provider details
- NPI number
- 1326198623
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 28121-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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.
Practice location
105 Garfield Ave
Eau Claire, WI 54701-4811
Phone: (715) 836-4311
Fax: (715) 836-5979
Street-level locationGet directions
Mailing address
105 Garfield
Eau Claire, WI 54701
Registry dates
- Enumerated
- 2007-01-11
- Last updated
- 2007-07-08
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.