Mark A. Twesme, PA
Physician Assistant · Eau Claire, WI
Mark A. Twesme, PA is a physician assistant with a practice address in Eau Claire, Wisconsin, and NPI 1922258102, issued on Sep 24, 2008. Check the license (Wisconsin 2343, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark A. Twesme
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 2343 WI
9146 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1400 Bellinger St, Eau Claire, WI 54703
- Phone
- (715) 838-5222
- Enumerated
- Sep 24, 2008
- Record last updated
- Sep 28, 2022
- Medicare enrollment
- Enrolled (PECOS I20081205000270); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,475 in Wisconsin → Look up another NPI →
Also registered at 1400 Bellinger St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andrea Aguayo, PHARMDPharmacist1003507492
- Boshra Al Ibraheem, MDFamily Medicine Physician1376399444
Verify Mark A. Twesme in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 2343Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average physician assistant in 2024
112 Medicare Part D claims for 30 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Oxycodone Hcl12 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.
Industry payments in 2024: $58.82
1 payment: food and beverage; the largest payer was Medical Device Business Services, Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Mayo Clinic ArizonaScottsdale, AZ
- Mayo Clinic Health System-Northwest Wisconsin Region IncEau Claire, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark A. Twesme among 3,475 physician assistant records in Wisconsin
Mark A. Twesme, 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 2008, is newer than 28% of them.
- NPI issued2008 · 28% of these records are older, 69% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2008 · median 2016 among the 2,491 with a school on file
- Record last updated2022 · 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).
106 physician assistant records list a practice address in Eau Claire
They are 106 of the 3,085 NPPES records with a practice address in Eau Claire, and 3,475 physician assistant records in Wisconsin.
All 3,475 in Wisconsin → Every provider in Eau Claire → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Roger Andrews, PAEau Claire, WI 547031568424562
- Sean Cabbage, PAEau Claire, WI 547031457313918
- Justin Grube, PA-CEau Claire, WI 547031811217417
- Kirk Herzog, PAEau Claire, WI 547031144282138
- Gloria Krueger, PA-CEau Claire, WI 547031639402076
- Jennifer Motto, PAEau Claire, WI 547031013980549
- Aimee Nelson, PA-CEau Claire, WI 547031811187503
- Ganesh Ram, PAEau Claire, WI 547031467456848
Common questions
What is Mark A. Twesme, PA's NPI number?
Mark A. Twesme, PA's National Provider Identifier (NPI) is 1922258102, issued on Sep 24, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Twesme, PA located?
The NPPES record lists a practice address at 1400 Bellinger St, Eau Claire, WI, 54703. Phone: (715) 838-5222. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Twesme, PA's license?
NPPES lists Wisconsin license number 2343, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Mark A. Twesme, PA prescribe under Medicare Part D?
In 2024, Mark A. Twesme, PA had 112 Medicare Part D claims for 30 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.