Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Melinda Ellen Stack, MD

Individual provider Colon & Rectal Surgery Physician · NPI 1215223490

Melinda Ellen Stack, MD is registered under Colorectal Surgery (Proctology) in Chicago, Illinois. Graduated from University of Chicago, Pritzker School of Medicine in 2011, 15 years ago. Practices with Minnesota Oncology Hematology PA, a 132-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
15
Trained at
University of Chicago, Pritzker School of Medicine
Licensed in
IL
In the registry since
2011
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

5140 N California Ave Ste 560
Chicago, IL 60625-2577
Phone: (847) 570-1700
Fax: (847) 982-1098
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Colon & Rectal Surgery Physician (primary) Taxonomy 208C00000X · Licence 036135948 (IL)

Record details

NPI number1215223490
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 25, 2011
Last updated in NPPESOctober 14, 2021
Certification dateOctober 14, 2021

Medicare enrollment

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

Medicare specialtyCOLORECTAL SURGERY (PROCTOLOGY)
Also practisesGENERAL SURGERY
Medical schoolUNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Minnesota Oncology Hematology Pa — 132 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 13 times · 43rd percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients146
Services billed 307 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 Minnesota Oncology Hematology PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 132 clinicians in the practice; 12 are shown here.

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