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

Anthony A Niezyniecki, MD

Individual provider Emergency Medicine Physician · NPI 1104864842

Anthony A Niezyniecki, MD is an Emergency Medicine in Milwaukee, Wisconsin. Graduated from Northwestern University Feinberg Medical School in 1993, 33 years ago. Practices with Rockford Emergency Physicians, LLC, a 52-clinician group and accepts Medicare assignment. Licensed in Illinois and Wisconsin.

Years since qualifying
33
Trained at
Northwestern University Feinberg Medical School
Licensed in
IL, WI
In the registry since
2006
Specialties on file
2
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

111 E Wisconsin Ave
Milwaukee, WI 53202-4815
Phone: (414) 290-6720
Fax: (414) 290-6755
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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 38776-020 (WI)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 036-094801 (IL)

Record details

NPI number1104864842
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 3, 2006
Last updated in NPPESJanuary 30, 2009

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1993 (33 years in practice)
Group practice Rockford Emergency Physicians, Llc — 52 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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