Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1851779052 Individual Practitioner Male Practitioner

Dr. Michael Fenlon , MD

Transplant Surgery • Chicago, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Michael Fenlon, MD is a certified Transplant Surgery practicing in Chicago, IL. With approximately 13 years of clinical experience since graduating from University Of California, Irvine, California College Of Medicine in 2013, Dr. Fenlon delivers high-quality medical care to the local community at 225 EAST CHICAGO AVENUE.

Dr. Fenlon is affiliated with University Of Utah Adult Services and accepts Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

225 East Chicago Avenue
Box#57

Chicago, IL 60611

Telephone 3122274646

Medicare Profile & Education

Medical School

University Of California, Irvine, California College Of Medicine

Graduation Year

2013

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Transplant Surgery in Chicago, IL

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
13 Yrs -10.7 yrs vs City Avg
City Avg: 23.7 Yrs
State Avg: 28.6 Yrs
Regional Practice Density
50 Specialists

Practicing in Chicago, IL (68 Statewide)

Telehealth Adoption Rate
4.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Fenlon (13 Years) 13 Yrs
Chicago Specialty Average (23.7 Years) 23.7 Yrs

Medical Specialties & State Licenses

CMS Verified: 2025-12-05
Transplant Surgery Primary Specialty

NUCC Taxonomy Code: 204F00000X

State License UT 14158197-1235

A surgeon who specializes in transplant surgery.

Surgery - Pediatric Surgery

NUCC Taxonomy Code: 2086S0120X

State License IL 036166547

A surgeon with expertise in the management of surgical conditions in premature and newborn infants, children and adolescents.

Surgery

NUCC Taxonomy Code: 208600000X

State License CA 135974

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Hospital & Practice Group Affiliations

University Of Utah Adult Services

50 N Medical Dr, Salt Lake City, UT 841320100

Phone: 8015856387

Secondary Practice Locations

1520 San Pablo St # 3400

Los Angeles, CA 900335310

Phone: 3234429064

Practice Associates & Co-Workers

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

14 Associated Practitioners
NPI 1093335184

Doctor of Medicine (M.D.)

Dr. Michael Carr , MD

Pediatrics - Pediatric Cardiology

NPI 1285770925

Doctor of Medicine (M.D.)

Dr. Eric Cheon , MD

Anesthesiology - Pediatric Anesthesiology

NPI 1346532371

Doctor of Medicine (M.D.)

Tracey Rooney , APRN-CRNA

Nurse Anesthetist, Certified Registered

NPI 1417619172

APRNCRNA

Dr. Robyn Lottes , MD, PhD

Pediatrics - Pediatric Cardiology

NPI 1487114161

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

NPI 1487483228

Doctor of Philosophy (Ph.D.)

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) December 05, 2025

Transplant Surgery (License #14158197-1235 in UT)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) October 10, 2024

Surgery (License #135974 in CA)

📍
Updated Practice Location September 29, 2023

Registered at 225 EAST CHICAGO AVENUE, BOX#57, CHICAGO, IL 60611 (Tel: 3122274646)

📍
Updated Business Mailing Address September 29, 2023

Registered at 225 EAST CHICAGO AVENUE, BOX#57, CHICAGO, IL 60611

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 29, 2023

Surgery (License #036166547 in IL)

NPI Profile Active May 08, 2015

NPI status registered as active in NPPES database

📍
Updated Practice Location May 08, 2015

Registered at 1520 SAN PABLO ST # 3400, LOS ANGELES, CA 900335310 (Tel: 3234429064)

📍
Updated Business Mailing Address May 08, 2015

Registered at 2816 CACATUA ST, CARLSBAD, CA 920094401

👤
Provider Name / Credentials Updated May 08, 2015

Recorded as MICHAEL FENLON, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 08, 2015

Surgery (License #135974 in CA)

🟢
Initial NPI Registration & Enumeration May 08, 2015

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1851779052
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 08, 2015
Last Update: December 05, 2025
Sole Proprietor: Yes

Mailing Address

225 East Chicago Avenue, Box#57

Chicago, IL 60611

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.