Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1700941531 Individual Practitioner Male Practitioner

Mitchell Posner

Surgery - Surgical Oncology • Chicago, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Mitchell Posner is a certified Surgery - Surgical Oncology practicing in Chicago, IL. With approximately 45 years of clinical experience since graduating from State University Of New York At Buffalo School Of Medicine in 1981, Mitchell Posner delivers high-quality medical care to the local community at 5841 S MARYLAND AVE.

Mitchell Posner maintains professional affiliations with University Of Chicago, The University Of Chicago Medical Center and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, telephone medical discussion with physician. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

5841 S Maryland Ave

Chicago, IL 606371443

Telephone 8888240200
Associated Practice Facility / Clinic
🏢 University Of Chicago Facility NPI 1821048786

Medicare Profile & Education

Medical School

State University Of New York At Buffalo School Of Medicine

Graduation Year

1981

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery - Surgical Oncology in Chicago, IL

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
45 Yrs +21.3 yrs vs City Avg
City Avg: 23.7 Yrs
State Avg: 20.1 Yrs
Regional Practice Density
40 Specialists

Practicing in Chicago, IL (73 Statewide)

Telehealth Adoption Rate
40.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
78.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Posner (45 Years) 45 Yrs
Chicago Specialty Average (23.7 Years) 23.7 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
22 21 $197.00 $36.71
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
18 18 $419.00 $86.14
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
16 16 $598.00 $139.49
99213 Established patient office or other outpatient visit, typically 15 minutes
12 11 $312.83 $67.97

Medical Specialties & State Licenses

CMS Verified: 2025-11-20
Surgery - Surgical Oncology Primary Specialty

NUCC Taxonomy Code: 2086X0206X

State License IL 036092015

A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research.

Hospital & Practice Group Affiliations

University Of Chicago

5841 S Maryland Ave, Chicago, IL 606371443

Phone: 8888240200

The University Of Chicago Medical Center

5841 S Maryland Ave, Chicago, IL 606371443

Phone: 7737021000

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
Alexandra Dumitrescu

Internal Medicine

NPI 1003078049
Peleg Horowitz

Neurological Surgery

NPI 1003088279
Sandeep Gurbuxani

Pathology - Hematology

NPI 1003093535
Dr. Nathan Nowalk , MD

Internal Medicine - Pulmonary Disease

NPI 1003298720

Doctor of Medicine (M.D.)

Maria Calzonzi

Nurse Practitioner - Family

NPI 1003396219
Thomas Kelly

Psychiatry & Neurology - Neurology

NPI 1003967084

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

11 Historical Events
🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) November 20, 2025

Surgery (License #036092015 in IL)

📍
Updated Practice Location March 08, 2022

Registered at 5841 S MARYLAND AVE, CHICAGO, IL 606371443 (Tel: 8888240200)

📍
Updated Business Mailing Address March 08, 2022

Registered at 150 HARVESTER DR, SUITE 300, BURR RIDGE, IL 605275919

👤
Provider Name / Credentials Updated March 08, 2022

Recorded as MITCHELL POSNER

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 08, 2022

Surgery (License #036092015 in IL)

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 180 HARVESTER DR STE 110, BURR RIDGE, IL 605276686 (Tel: 7738344064)

📍
Updated Business Mailing Address July 08, 2007

Registered at 5841 S MARYLAND AVE # MC1099, CHICAGO, IL 606371447

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as MITCHELL POSNER, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Surgery

🟢
Initial NPI Registration & Enumeration December 22, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews
No patient reviews submitted yet for Mitchell Posner. Be the first to share your experience!

Sign in to leave a review for Mitchell Posner

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1700941531
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: December 22, 2006
Last Update: November 20, 2025
Sole Proprietor: No

Mailing Address

150 Harvester Dr, Suite 300

Burr Ridge, IL 605275919

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.