Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William B Weir, MD

Individual provider Emergency Medicine Physician · NPI 1811966781

William B Weir, MD is an Emergency Medicine in Milwaukee, Wisconsin. Qualified in 2003, 23 years ago. Practices with The Medical College of Wisconsin Inc, a 2,093-clinician group and accepts Medicare assignment. Licensed in Illinois, Indiana and Wisconsin.

Years since qualifying
23
Licensed in
IL, IN, WI
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9200 W Wisconsin Ave
Milwaukee, WI 53226-3522
Phone: (414) 955-6450
Fax: (414) 955-0082
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 85200 (WI)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 01059413A (IN)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 036-11786 (IL)

Record details

NPI number1811966781
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 14, 2006
Last updated in NPPESMarch 5, 2025
Certification dateMarch 5, 2025
Mailing address9200 W Wisconsin Ave, Milwaukee, WI 53226-3522

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice The Medical College Of Wisconsin Inc — 2093 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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