Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mary-Katherine Butler, PA-C

Individual provider Physician Assistant · NPI 1326524729

Mary-Katherine Butler, PA-C is a Physician Assistant in Chicago, Illinois. Qualified in 2018, 8 years ago. Practices with Northwestern Medical Faculty Foundation, a 4,394-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
8
Licensed in
IL
In the registry since
2018
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

259 E Erie St Fl 13
Chicago, IL 60611-3926
Phone: (312) 695-6800
Fax: (312) 472-4877
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 767 Clarington Ct, Columbus, OH 43214-2390 — (312) 301-5253

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 085007822 (IL)

Record details

NPI number1326524729
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedJuly 18, 2018
Last updated in NPPESApril 29, 2026
Certification dateApril 29, 2026

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Northwestern Medical Faculty Foundation — 4394 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients114
Services billed 137 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Northwestern Medical Faculty Foundation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 4394 clinicians in the practice; 12 are shown here.

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