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

George M Lessmann, DO

Individual provider Family Medicine Physician · NPI 1134641384

George M Lessmann, DO is a Family Practice in Oshkosh, Wisconsin. Graduated from Chicago College of Osteopathy in 2017, 9 years ago. Practices with Aurora Medical Group, Inc, a 3,741-clinician group and accepts Medicare assignment. Licensed in Illinois and Wisconsin.

Years since qualifying
9
Trained at
Chicago College of Osteopathy
Licensed in
IL, WI
In the registry since
2017
Specialties on file
2
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

414 Doctors Ct
Oshkosh, WI 54901-2065
Phone: (920) 303-8700
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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 73490 (WI)
Family Medicine Physician Taxonomy 207Q00000X · Licence 125.071257 (IL)

Record details

NPI number1134641384
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 10, 2017
Last updated in NPPESAugust 28, 2023
Certification dateAugust 28, 2023
Mailing addressPo Box 735044, Chicago, IL 60673-5044

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolCHICAGO COLLEGE OF OSTEOPATHY
Graduated 2017 (9 years in practice)
Group practice Aurora Medical Group, Inc. — 3741 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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