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

Timothy J Grass, DO

Individual provider Family Medicine Physician · NPI 1982719134

Timothy J Grass, DO is a Family Practice in Franklin, Wisconsin. Graduated from Midwestern University, Chicago College of Osteopathic Med in 1995, 31 years ago. Practices with Ascension Medical Group-Southeast Wisconsin Inc, a 555-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
31
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
WI
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

10101 S 27th St
Franklin, WI 53132-7209
Phone: (414) 325-4940
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 38321 (WI)

Record details

NPI number1982719134
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 20, 2006
Last updated in NPPESMarch 7, 2023
Mailing address10101 S 27th St, Franklin, WI 53132-7209

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 1995 (31 years in practice)
Group practice Ascension Medical Group-Southeast Wisconsin Inc — 555 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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