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

Mark G Timmerman, MD

Individual provider Family Medicine Physician · NPI 1881649333

Mark G Timmerman, MD is a Family Practice in Spring Green, Wisconsin. Graduated from Mayo Medical School in 1989, 37 years ago. Practices with Sauk Prairie Healthcare Inc, a 122-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
37
Trained at
Mayo Medical School
Licensed in
WI
In the registry since
2006
Specialties on file
2
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

436 Sunrise Dr
Spring Green, WI 53588-9286
Phone: (608) 588-2502
Fax: (608) 588-7724
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sports Medicine (Family Medicine) Physician (primary) Taxonomy 207QS0010X · Licence 31402-020 (WI)
Family Medicine Physician Taxonomy 207Q00000X · Licence 31402-020 (WI)

Record details

NPI number1881649333
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 23, 2006
Last updated in NPPESApril 29, 2008
Mailing address436 Sunrise Dr, Spring Green, WI 53588-9286

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMAYO MEDICAL SCHOOL
Graduated 1989 (37 years in practice)
Group practice Sauk Prairie Healthcare Inc — 122 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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