Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mark W Williams, MD

Individual provider Family Medicine Physician · NPI 1326198623

Dr. Mark W Williams, MD is a Family Medicine Physician in Eau Claire, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2007.

Licensed in
WI
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

105 Garfield Ave
Eau Claire, WI 54701-4811
Phone: (715) 836-4311
Fax: (715) 836-5979
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 28121-020 (WI)

Record details

NPI number1326198623
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 11, 2007
Last updated in NPPESJuly 8, 2007
Mailing address105 Garfield, P.O. Box 4004, Eau Claire, WI 54701

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