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

John Holzhauer, MD

Individual provider Emergency Medicine Physician · NPI 1548623747

John Holzhauer, MD is an Emergency Medicine in Viroqua, Wisconsin. Qualified in 2016, 10 years ago. Practices with The Medical College of Wisconsin Inc, a 2,093-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
10
Licensed in
WI
In the registry since
2016
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

507 S Main St
Viroqua, WI 54665-2059
Phone: (608) 637-2101
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 68634-20 (WI)

Record details

NPI number1548623747
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 4, 2016
Last updated in NPPESDecember 16, 2022
Certification dateDecember 16, 2022
Mailing address49495 Docs Ln, Gays Mills, WI 54631-8260

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice The Medical College Of Wisconsin Inc — 2093 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Viroqua