Matthias Weiss, MD
Hematology & Oncology Physician · La Crosse, WI
Matthias Weiss, MD is a hematology & oncology physician with a practice address in La Crosse, Wisconsin, and NPI 1245336759, issued on Sep 15, 2006. Check the license (Wisconsin 30093, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Matthias Weiss
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 30093 WI
Self-reported in NPPES; status is on the state search - Practice location
- 700 West Ave S, La Crosse, WI 54601
- Phone
- (608) 785-0940
- Enumerated
- Sep 15, 2006
- Record last updated
- Oct 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100623000197); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 295 in Wisconsin → Look up another NPI →
Also registered at 700 West Ave S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melissa Adelsen, OTR/L,CBISOccupational Therapist1114603362
- Chelsea Ale, PHDClinical Psychologist1831452069
- Alice Bachop, FNPNurse Practitioner1164400503
- Gabriela Balf, MD, MPHPsychiatry Physician1124024724
- Marisa Baorto, MDAnesthesiology Physician1588647291
- Marsha Bateman, PTPhysical Therapist1578547279
Verify Matthias Weiss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 30093Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
24 Medicare Part D claims for 12 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
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: $248.96
4 payments; by number, the most common kind was food and beverage; the largest payer was Tempus AI, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 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 one group practice
- Thedacare, IncorporatedAppleton, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthias Weiss among 295 hematology & oncology physician records in Wisconsin
Matthias Weiss, MD is one of 295 hematology & oncology physician records with a practice address in Wisconsin. 82% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1986 · median 2004 among the 217 with a school on file
- Record last updated2021 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Wisconsin
There are 295 hematology & oncology physician records in Wisconsin.
All 295 in Wisconsin → Every provider in La Crosse → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Christian Debranin, MDLa Crosse, WI 546011417036005
- John Farnen, MDLa Crosse, WI 546011467457432
- Paula Gill, MDLa Crosse, WI 546011750363909
- Gil Harmon, MDLa Crosse, WI 546011104265339
- Yacki Hayashi-Tanner, D.O.La Crosse, WI 546011487031894
- Paul Letendre, MDLa Crosse, WI 546011801158852
- David Marinier, M.D.La Crosse, WI 546011851412555
- Kurt Oettel, MDLa Crosse, WI 546011770585051
Common questions
What is Matthias Weiss, MD's NPI number?
Matthias Weiss, MD's National Provider Identifier (NPI) is 1245336759, issued on Sep 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Matthias Weiss, MD located?
The NPPES record lists a practice address at 700 West Ave S, La Crosse, WI, 54601. Phone: (608) 785-0940. Providers update this record themselves, so call before visiting.
How can I verify Matthias Weiss, MD's license?
NPPES lists Wisconsin license number 30093, 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 Matthias Weiss, MD prescribe under Medicare Part D?
In 2024, Matthias Weiss, MD had 24 Medicare Part D claims for 12 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.