Stephanie Mae O'brien , FNP-C
Nurse Practitioner - Pediatrics • Chicago, IL
Professional Overview & Biography Verified Profile Summary
Stephanie O'Brien, FNP-C is a registered healthcare professional specializing in Nurse Practitioner - Pediatrics in Chicago, IL. Practice services are available at 225 E CHICAGO AVE under active NPI credentials.
Practice Location & Contact Primary Location
225 E Chicago Ave
Chicago, IL 606112991
Specialty Benchmarks & Practice Insights
Comparative analytics for Nurse Practitioner - Pediatrics in Chicago, IL
Practicing in Chicago, IL (694 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Medical Specialties & State Licenses
CMS Verified: 2025-07-24NUCC Taxonomy Code: 363LP0200X
Definition to come...
Secondary Practice Locations
1870 Silver Cross Blvd Ste 210
New Lenox, IL 604518646
Phone: 3122274100
1131 Techny Rd
Northbrook, IL 600625503
Phone: 3122274100
880 W Central Rd Ste 6400
Arlington Heights, IL 600052378
Phone: 3122274100
1895 Arbor Glen Blvd
Schaumburg, IL 601953114
Phone: 3122274100
3722 Touhy Ave
Skokie, IL 600763941
Phone: 3122274100
2301 Enterprise Dr
Westchester, IL 601545802
Phone: 3122274100
250 E Superior St
Chicago, IL 606112914
Phone: 3122274100
251 E Huron St
Chicago, IL 606112908
Phone: 3122274100
1620 W Harrison St
Chicago, IL 606123801
Phone: 3122274100
900 N Westmoreland Rd Ste 110
Lake Forest, IL 600451688
Phone: 3122274100
10350 Haligus Rd Ste 110
Huntley, IL 601429526
Phone: 3122274100
1475 E Belvidere Rd, Pavilion C, Suite 285
Grayslake, IL 60030
Phone: 3122274100
25 N Winfield Rd
Winfield, IL 601901379
Phone: 3122274100
2515 N Clark St Ste 900
Chicago, IL 606142730
Phone: 3122274100
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Pediatrics - Pediatric Cardiology
Doctor of Medicine (M.D.)
Pediatrics - Pediatric Critical Care Medicine
Doctor of Medicine (M.D.)
Pediatrics - Pediatric Cardiology
Doctor of Medicine (M.D.)
Pediatrics - Pediatric Cardiology
Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)
Pediatrics - Pediatric Cardiology
Doctor of Medicine (M.D.)
Pediatrics - Pediatric Cardiology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Recorded as STEPHANIE O'BRIEN, FNP-C
NPI status registered as active in NPPES database
Registered at 225 E CHICAGO AVE, CHICAGO, IL 606112991 (Tel: 8159757013)
Registered at 2544 N BURLING ST APT 1R, CHICAGO, IL 606142529 (Tel: 8159757013)
Recorded as STEPHANIE MESSERSCHMIDT, FNP-C
Nurse Practitioner (License #209016850 in IL)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
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NPI Administrative Meta
Mailing Address
2544 N Burling St Apt 1r
Chicago, IL 606142529
Phone: 8159757013
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.