Thomas John Ryan, MD
Anesthesiology Physician · Milwaukee, WI
Thomas John Ryan, MD is an anesthesiology physician with a practice address in Milwaukee, Wisconsin, and NPI 1104894443, issued on Mar 11, 2006. Check the license (Wisconsin 347100-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Thomas John Ryan
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 347100-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 945 N 12TH St, Milwaukee, WI 53233
- Phone
- (414) 219-6269
- Enumerated
- Mar 11, 2006
- Record last updated
- Oct 26, 2023
- Medicaid ID
- 31940100 WI
- Medicare enrollment
- Enrolled (PECOS I20090318000134); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1980
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 1,313 in Wisconsin → Look up another NPI →
Also registered at 945 N 12TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ibrahim Abu-ArqoubPharmacist1033539390
- Stephanie Adamczyk, PAPhysician Assistant1063007441
- Shant Adamian, DOObstetrics & Gynecology Physician1952861668
- Ola AhmadStudent in an Organized Health Care Education/Training Program1629871645
Verify Thomas John Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 347100-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Aurora Medical Group, Inc.Milwaukee, WI
- Gundersen Lutheran Medical Center IncLa Crosse, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas John Ryan among 1,313 anesthesiology physician records in Wisconsin
Thomas John Ryan, MD is one of 1,313 anesthesiology physician records with a practice address in Wisconsin. 72% 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 20% of them.
- NPI issued2006 · 20% of these records are older, 49% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1980 · median 2006 among the 872 with a school on file
- Record last updated2023 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
387 anesthesiology physician records list a practice address in Milwaukee
They are 387 of the 18,389 NPPES records with a practice address in Milwaukee, and 1,313 anesthesiology physician records in Wisconsin.
All 1,313 in Wisconsin → Every provider in Milwaukee → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Anatoliy Daskal, MDMilwaukee, WI 532331295782688
- Marc Eiseman, M.D.Milwaukee, WI 532331124091855
- Gregory Felsheim, MDMilwaukee, WI 532331427098474
- Timothy Gundlach, M.D.Milwaukee, WI 532331144200205
- Joseph Kim, MDMilwaukee, WI 532331396798062
- Robert Koebert, M.D.Milwaukee, WI 532331104890334
- Michael Muzi, MDMilwaukee, WI 532331487606232
- Niraj Nijhawan, MDMilwaukee, WI 532331255448619
Common questions
What is Thomas John Ryan, MD's NPI number?
Thomas John Ryan, MD's National Provider Identifier (NPI) is 1104894443, issued on Mar 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas John Ryan, MD located?
The NPPES record lists a practice address at 945 N 12TH St, Milwaukee, WI, 53233. Phone: (414) 219-6269. Providers update this record themselves, so call before visiting.
How can I verify Thomas John Ryan, MD's license?
NPPES lists Wisconsin license number 347100-020, 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.
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.