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

Mark T Sontag, MD

Individual provider Anesthesiology Physician · NPI 1528060381

Mark T Sontag, MD is an Anesthesiology Physician in Eau Claire, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2005.

Licensed in
WI
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1221 Whipple St
Eau Claire, WI 54703-5270
Phone: (715) 838-3311
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 29393 (WI)

Record details

NPI number1528060381
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 11, 2005
Last updated in NPPESMay 15, 2014

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