George M. Lessmann, DO
Family Medicine Physician · Oshkosh, WI
George M. Lessmann, DO is a family medicine physician with a practice address in Oshkosh, Wisconsin, and NPI 1134641384, issued on Jul 10, 2017. Check the license (Wisconsin 73490, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- George M. Lessmann
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 73490 WI
125.071257 IL
Self-reported in NPPES; status is on the state search - Practice location
- 414 Doctors CT, Oshkosh, WI 54901
- Phone
- (920) 303-8700
- Enumerated
- Jul 10, 2017
- Record last updated
- Aug 28, 2023
- Medicaid ID
- 100103190 WI
- Medicare enrollment
- Enrolled (PECOS I20200825001651); accepts Medicare assignment
- Medical or professional school
- Chicago College Of Osteopathy, 2017
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 414 Doctors CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tyler Brown, PHDPsychologist1467129890
- Kimberly Davies-Robinet, PSY.D.Psychologist1518151653
- Eric Duwell, MDFamily Medicine Physician1710092978
Verify George M. Lessmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 73490Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average family medicine physician in 2024
3,296 Medicare Part D claims for 210 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 109 claims were for opioids.
Most prescribed
- Atorvastatin Calcium229 claims
- Lisinopril143 claims
- Losartan Potassium124 claims
- Amlodipine Besylate105 claims
- Omeprazole100 claims
- Gabapentin86 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Aurora Medical Group, Inc.Oshkosh, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
George M. Lessmann among 3,765 family medicine physician records in Wisconsin
George M. Lessmann, DO is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2017 · median 2007 among the 2,347 with a school on file
- Record last updated2023 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
52 family medicine physician records list a practice address in Oshkosh
They are 52 of the 1,527 NPPES records with a practice address in Oshkosh, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Oshkosh → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kelly Badger, MDOshkosh, WI 549011558523258
- Kristin Beougher, DOOshkosh, WI 549011891704417
- Scott Beougher, DOOshkosh, WI 549011063421683
- Harold Boccheciamp, MDOshkosh, WI 549011063406973
- Eric Duwell, MDOshkosh, WI 549011710092978
- Shawn Ekstrom, MDOshkosh, WI 549011134120033
- Albert Fisher, MDOshkosh, WI 549011437131117
- Karl Larson, M.D.Oshkosh, WI 549011063528529
Common questions
What is George M. Lessmann, DO's NPI number?
George M. Lessmann, DO's National Provider Identifier (NPI) is 1134641384, issued on Jul 10, 2017. An NPI identifies a provider in billing; it is not a license.
Where is George M. Lessmann, DO located?
The NPPES record lists a practice address at 414 Doctors CT, Oshkosh, WI, 54901. Phone: (920) 303-8700. Providers update this record themselves, so call before visiting.
How can I verify George M. Lessmann, DO's license?
NPPES lists Wisconsin license number 73490, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does George M. Lessmann, DO prescribe under Medicare Part D?
In 2024, George M. Lessmann, DO had 3,296 Medicare Part D claims for 210 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.