Matthew L. Ryan, M.D.
Hematology & Oncology Physician · Green Bay, WI
Matthew L. Ryan, M.D. is a hematology & oncology physician with a practice address in Green Bay, Wisconsin, and NPI 1548233612, issued on Feb 9, 2006. Check the license (Wisconsin 50362, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Matthew L. Ryan
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 50362 WI
4301091673 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1726 Shawano Ave, Green Bay, WI 54303
- Phone
- (920) 884-3135
- Enumerated
- Feb 9, 2006
- Record last updated
- Dec 20, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (920) 884-3144
- Medicaid IDs
- 353326600 WI
105312207 MI - Medicare enrollment
- Enrolled (PECOS I20081003000340); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 295 in Wisconsin → Look up another NPI →
Also registered at 1726 Shawano Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kamal Kant Singh Abbi, M.D.Medical Oncology Physician1588827778
- Joao Vitor Andreoli Saltao, MDInternal Medicine Physician1851870976
- Mohamed Azab, M.DGastroenterology Physician1013390434
- Melissa Bader, NPFamily Nurse Practitioner1508692724
- Yaw Berko, MDInternal Medicine Physician1003952995
- Jules Blank, M.D.Hematology & Oncology Physician1730273889
Verify Matthew L. Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 50362Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,355 Medicare Part D claims for 397 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 150 claims were for opioids.
Most prescribed
- Prednisone91 claims
- Ondansetron Hcl73 claims
- Eliquis71 claims
- Anastrozole62 claims
- Tamoxifen Citrate61 claims
- Abiraterone Acetate58 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: $3,881.13
5 payments; by number, the most common kind was compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program; the largest payer was Csl Behring. 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 4 group practices
- Ascension NE Wisconsin, IncAppleton, WI
- Hemophilia Outreach OF Wisconsin IncGreen Bay, WI
- Osf Multi-Specialty GroupEscanaba, MI
- St Vincent Hospital-Hospital Sisters-Third Order OF St FrancisGreen Bay, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew L. Ryan among 295 hematology & oncology physician records in Wisconsin
Matthew L. Ryan, M.D. 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
- Graduated2002 · 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 Green Bay → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Jules Blank, M.D.Green Bay, WI 543031730273889
- Bradley Heraly, M.D.Green Bay, WI 543031063730042
- Anthony Jaslowski, M.D.Green Bay, WI 543031467546507
- Harsha Poola, M.DGreen Bay, WI 543031801174354
- Michael Volk, M.D.Green Bay, WI 543031750475851
- Jerry Winkler, M.D.Green Bay, WI 543031851365910
- Brian Burnette, MDGreen Bay, WI 543011952523680
- Paul Koch, M.D.Green Bay, WI 543011649346073
Common questions
What is Matthew L. Ryan, M.D.'s NPI number?
Matthew L. Ryan, M.D.'s National Provider Identifier (NPI) is 1548233612, issued on Feb 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Matthew L. Ryan, M.D. located?
The NPPES record lists a practice address at 1726 Shawano Ave, Green Bay, WI, 54303. Phone: (920) 884-3135. Providers update this record themselves, so call before visiting.
How can I verify Matthew L. Ryan, M.D.'s license?
NPPES lists Wisconsin license number 50362, 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 Matthew L. Ryan, M.D. prescribe under Medicare Part D?
In 2024, Matthew L. Ryan, M.D. had 1,355 Medicare Part D claims for 397 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.