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Active NPI 1902479926 Individual Practitioner Male Practitioner

Jeff Johnson , APN-CNP

Nurse Practitioner • Chicago, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Jeff Johnson, APN-CNP is a certified Nurse Practitioner practicing in Chicago, IL. With approximately 5 years of clinical experience since graduating from Loyola University Of Chicago, Stritch School Of Medicine in 2021, Jeff Johnson delivers high-quality medical care to the local community at 676 N SAINT CLAIR ST STE 14-044.

Jeff Johnson maintains professional affiliations with Endeavor Health Medical Group, Northwestern Medical Faculty Foundation and accepts Medicare assignment.

Frequently performed procedures and clinical services include critical care, first, subsequent hospital care with moderate levelof medical decision making, if using time, at least, critical care. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

676 N Saint Clair St Ste 14-044

Chicago, IL 606112927

Telephone 3126951800
Fax 3126951394

Medicare Profile & Education

Medical School

Loyola University Of Chicago, Stritch School Of Medicine

Graduation Year

2021

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Nurse Practitioner in Chicago, IL

Experienced Practitioner (5-10 Yrs)
Practitioner Clinical Experience
5 Yrs -3.9 yrs vs City Avg
City Avg: 8.9 Yrs
State Avg: 10.4 Yrs
Regional Practice Density
961 Specialists

Practicing in Chicago, IL (4929 Statewide)

Telehealth Adoption Rate
19.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
68.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Johnson (5 Years) 5 Yrs
Chicago Specialty Average (8.9 Years) 8.9 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
99291 Critical care, first 30-74 minutes
99 77 $651.45 $182.92
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
14 11 $150.40 $68.24

Medical Specialties & State Licenses

CMS Verified: 2026-04-16
Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

State License IL 209023852

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Nurse Practitioner - Critical Care Medicine

NUCC Taxonomy Code: 363LC0200X

State License IL 209023852

Definition to come...

Registered Nurse - Critical Care Medicine

NUCC Taxonomy Code: 163WC0200X

State License IL 041383616

Definition to come...

Hospital & Practice Group Affiliations

Northwestern Medical Faculty Foundation

675 N St Clair, Chicago, IL 606115975

Endeavor Health Medical Group

2650 Ridge Ave, Evanston, IL 602011700

Endeavor Health Medical Group

801 S Washington St, Naperville, IL 605407430

Phone: 6305275359

Endeavor Health Medical Group

801 S Washington St, Naperville, IL 605407430

Phone: 6305275197

Northwestern Medical Faculty Foundation

251 E Huron, Chicago, IL 606112908

Northwestern Medical Faculty Foundation

251 E Huron St, Chicago, IL 606112908

Northwestern Medical Faculty Foundation

675 N Saint Clair St, Chicago, IL 606115975

Practice Associates & Co-Workers

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

40 Associated Practitioners
Kiersten O'neill , PA-C

Physician Assistant

NPI 1003430596

Physician Assistant (Certified)

Cody Kelley , PA-C

Physician Assistant

NPI 1033927462

Physician Assistant (Certified)

Dr. Catherine Gao , MD

Internal Medicine - Pulmonary Disease

NPI 1043699689

Doctor of Medicine (M.D.)

William Ahrenholz , PA

Physician Assistant

NPI 1043968001

Physician Assistant

Todd Foister , APRN, CNP

Nurse Practitioner

NPI 1053191015

Advanced Practice Registered Nurse, Certified Nurse Practitioner

Gregory Cook , APRN, CNP

Nurse Practitioner

NPI 1053964395

Advanced Practice Registered Nurse, Certified Nurse Practitioner

Career & Practice History Timeline

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

15 Historical Events
📍
Updated Practice Location April 16, 2026

Registered at 676 N SAINT CLAIR ST STE 14-044, CHICAGO, IL 606112927 (Tel: 3126951800)

📍
Updated Business Mailing Address April 16, 2026

Registered at 676 N SAINT CLAIR ST STE 14-044, CHICAGO, IL 606112927 (Tel: 3126951800)

👤
Provider Name / Credentials Updated April 09, 2026

Recorded as JEFF JOHNSON, APN-CNP

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 09, 2026

Nurse Practitioner (License #209023852 in IL)

📍
Updated Business Mailing Address November 04, 2024

Registered at 29373 NETWORK PL, CHICAGO, IL 606731293 (Tel: 8473905900)

📍
Updated Business Mailing Address September 23, 2021

Registered at 17800 KEDZIE AVE STE AIP, HAZEL CREST, IL 604292029

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 23, 2021

Registered Nurse (License #041383616 in IL)

📍
Updated Practice Location September 01, 2021

Registered at 17800 KEDZIE AVE STE AIP, HAZEL CREST, IL 604292029 (Tel: 7082133230)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 01, 2021

Nurse Practitioner (License #209023852 in IL)

NPI Profile Active July 19, 2021

NPI status registered as active in NPPES database

📍
Updated Practice Location July 19, 2021

Registered at 251 E HURON ST, CHICAGO, IL 606112908 (Tel: 3129262000)

📍
Updated Business Mailing Address July 19, 2021

Registered at 531 N HARTLAND CT, CHICAGO, IL 606226052

👤
Provider Name / Credentials Updated July 19, 2021

Recorded as JEFF JOHNSON

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 19, 2021

Registered Nurse (License #041383616 in IL)

🟢
Initial NPI Registration & Enumeration July 19, 2021

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: 1902479926
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: July 19, 2021
Last Update: April 16, 2026
Sole Proprietor: Yes

Mailing Address

676 N Saint Clair St Ste 14-044

Chicago, IL 606112927

Phone: 3126951800

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.