Seth D. Udlis, MD
Family Medicine Physician · Fond Du Lac, WI
Seth D. Udlis, MD is a family medicine physician with a practice address in Fond Du Lac, Wisconsin, and NPI 1891896445, issued on Sep 26, 2006. Check the license (Wisconsin 36396, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Seth D. Udlis
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 36396 WI
Self-reported in NPPES; status is on the state search - Practice location
- 912 S Hickory St, Fond Du Lac, WI 54935
- Phone
- (920) 929-7490
- Enumerated
- Sep 26, 2006
- Record last updated
- Feb 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 32618400 WI
- Medicare enrollment
- Enrolled (PECOS I20050216000724); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 912 S Hickory St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Darrell Brands, RPHPharmacist1619310505
- Lisa Brennan, FNPFamily Nurse Practitioner1417628702
- Sarah Davis, APNPFamily Nurse Practitioner1306480850
- Megan Diener, APNPAdult Health Nurse Practitioner1720413651
- Anna Hang, PA-CPhysician Assistant1720575749
- Brooke Jeske, APNPFamily Nurse Practitioner1528746773
Verify Seth D. Udlis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 36396Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average family medicine physician in 2024
9,479 Medicare Part D claims for 627 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 105 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,071 claims
- Amlodipine Besylate484 claims
- Simvastatin393 claims
- Omeprazole386 claims
- Losartan Potassium385 claims
- Metformin Hcl373 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
- Agnesian Healthcare IncFond Du Lac, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Seth D. Udlis among 3,765 family medicine physician records in Wisconsin
Seth D. Udlis, MD 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1990 · median 2007 among the 2,347 with a school on file
- Record last updated2021 · 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).
27 family medicine physician records list a practice address in Fond Du Lac
They are 27 of the 1,312 NPPES records with a practice address in Fond Du Lac, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Fond Du Lac → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michael Bachhuber, MDFond Du Lac, WI 549351538150990
- William Brusky, MDFond Du Lac, WI 549351124019898
- Paul Chambers, MDFond Du Lac, WI 549351518958123
- Derek Colmenares, MDFond Du Lac, WI 549351831180470
- Jamie Deering, MDFond Du Lac, WI 549351164473617
- Gina Everson, MDFond Du Lac, WI 549351124019799
- Thomas Fabricius, MDFond Du Lac, WI 549351861475592
- Kent Hartung, MDFond Du Lac, WI 549351417925595
Common questions
What is Seth D. Udlis, MD's NPI number?
Seth D. Udlis, MD's National Provider Identifier (NPI) is 1891896445, issued on Sep 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Seth D. Udlis, MD located?
The NPPES record lists a practice address at 912 S Hickory St, Fond Du Lac, WI, 54935. Phone: (920) 929-7490. Providers update this record themselves, so call before visiting.
How can I verify Seth D. Udlis, MD's license?
NPPES lists Wisconsin license number 36396, 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 Seth D. Udlis, MD prescribe under Medicare Part D?
In 2024, Seth D. Udlis, MD had 9,479 Medicare Part D claims for 627 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.