Timothy S. Welsch, PA
Physician Assistant · Oconomowoc, WI
Timothy S. Welsch, PA is a physician assistant with a practice address in Oconomowoc, Wisconsin, and NPI 1649228891, issued on May 4, 2006. Check the license (Wisconsin 1518-023, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Timothy S. Welsch
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 1518-023 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1284 N Summit Ave, Oconomowoc, WI 53066
- Phone
- (262) 569-3080
- Enumerated
- May 4, 2006
- Record last updated
- May 15, 2026
- Medicaid ID
- 41964400 WI
- Medicare enrollment
- Enrolled (PECOS I20051130000251); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 1284 N Summit Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephanie Bondioli, RPHPharmacist1033490180
- Angela Eggleston, PHARMDPharmacist1396146502
- Jeffery Glaspy, MDEmergency Medicine Physician1619925237
- Tamara Grissman, PA-CPhysician Assistant1093022519
- Lauren Hollandsworth, DOFamily Medicine Physician1760877559
- Jenna Muri, PAPhysician Assistant1760818983
Verify Timothy S. Welsch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 1518-023Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average physician assistant in 2024
199 Medicare Part D claims for 156 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 38 claims were for opioids.
Most prescribed
- Doxycycline Monohydrate23 claims
- Hydrocodone-Acetaminophen17 claims
- Ondansetron Odt16 claims
- Prednisone14 claims
- Ciprofloxacin Hcl13 claims
- Oxycodone-Acetaminophen13 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.Sheboygan, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy S. Welsch among 3,475 physician assistant records in Wisconsin
Timothy S. Welsch, PA is one of 3,475 physician assistant records with a practice address in Wisconsin. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 76% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2002 · median 2016 among the 2,491 with a school on file
- Record last updated2026 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 physician assistant records list a practice address in Oconomowoc
They are 16 of the 506 NPPES records with a practice address in Oconomowoc, and 3,475 physician assistant records in Wisconsin.
All 3,475 in Wisconsin → Every provider in Oconomowoc → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Elana Contorno, PA-CSummit, WI 530661295750479
- Eric Elliot, DMSC, PA-COconomowoc, WI 530661508825605
- Sandra Hansen, PA-CSummit, WI 530661174565170
- Adam Kelly, PASummit, WI 530661891974218
- Catherine Keulks-Torinus, P.A.C.Oconomowoc, WI 530661114903481
- Nicole Kujawa, PAOconomowoc, WI 530661174628341
- Wanda Marquart, PACSummit, WI 530661669420816
- Nancy Matthews, P.A.Oconomowoc, WI 530661649256686
Common questions
What is Timothy S. Welsch, PA's NPI number?
Timothy S. Welsch, PA's National Provider Identifier (NPI) is 1649228891, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy S. Welsch, PA located?
The NPPES record lists a practice address at 1284 N Summit Ave, Oconomowoc, WI, 53066. Phone: (262) 569-3080. Providers update this record themselves, so call before visiting.
How can I verify Timothy S. Welsch, PA's license?
NPPES lists Wisconsin license number 1518-023, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Timothy S. Welsch, PA prescribe under Medicare Part D?
In 2024, Timothy S. Welsch, PA had 199 Medicare Part D claims for 156 beneficiaries; the average among physician assistant prescribers was 830. 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.