Thomas Ryan, MD
NPI 1104894443 · Anesthesiology Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Ryan, MD is a Anesthesiology Physician provider in Milwaukee, WI (NPI 1104894443).
Provider details
- NPI number
- 1104894443
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 347100-020 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (2)
- 1836 South AveLa Crosse, WI 54601-5429Phone: (608) 782-7300
- 5000 W Chambers StMilwaukee, WI 53210-1650Phone: (414) 447-2000
Registry dates
- Enumerated
- 2006-03-11
- Last updated
- 2023-10-26
- Certified
- 2023-10-26
Frequently asked questions
- What is Thomas Ryan's NPI number?
- Thomas Ryan's National Provider Identifier (NPI) is 1104894443, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Ryan's specialty?
- Thomas Ryan is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Ryan located?
- Thomas Ryan's practice location on file with NPPES is 945 N 12th St, Milwaukee, WI 53233-1305.
- What is Thomas Ryan's phone number?
- The practice phone number listed in the NPPES registry for Thomas Ryan is (414) 219-6269.
- Does Thomas Ryan accept Medicare?
- Thomas Ryan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Ryan's NPI active?
- Yes — Thomas Ryan's NPI (1104894443) is active in the NPPES registry as of the last update on 2023-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.