Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1043701485 Individual Practitioner Female Practitioner

Dr. Adrienne B Mejia , MD MPH

Anesthesiology • Mchenry, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Adrienne Mejia, MD MPH is a certified Anesthesiology practicing in Mchenry, IL. With approximately 8 years of clinical experience since completing medical education in 2018, Dr. Mejia delivers high-quality medical care to the local community at 4201 W MEDICAL CENTER DR.

Dr. Mejia maintains professional affiliations with Northwestern Medical Faculty Foundation, The Pain Center Of Illinois Inc. and accepts Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

4201 W Medical Center Dr

Mchenry, IL 600508409

Telephone 8153445000
Fax 8153443347
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Other

Graduation Year

2018

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in Mchenry, IL

Experienced Practitioner (5-10 Yrs)
Practitioner Clinical Experience
8 Yrs -16.5 yrs vs City Avg
City Avg: 24.5 Yrs
State Avg: 28.6 Yrs
Regional Practice Density
15 Specialists

Practicing in Mchenry, IL (2670 Statewide)

Telehealth Adoption Rate
0.0% 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. Mejia (8 Years) 8 Yrs
Mchenry Specialty Average (24.5 Years) 24.5 Yrs

Medical Specialties & State Licenses

CMS Verified: 2026-03-03
Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License IL 036160694

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Student in an Organized Health Care Education/Training Program

NUCC Taxonomy Code: 390200000X

An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

Hospital & Practice Group Affiliations

Northwestern Medical Faculty Foundation

4201 W Medical Ctr Dr, Mchenry, IL 600508409

Phone: 8157594323

The Pain Center Of Illinois Inc.

2041 W Division St, Chicago, IL 606228521

Phone: 3126248364

Secondary Practice Locations

20 York Street Ynhh, Tompkins 226

New Haven, CT 065103220

Phone: 2036884242

Practice Associates & Co-Workers

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

40 Associated Practitioners
Dr. Saad Khan , MD

Internal Medicine

NPI 1003550195

Doctor of Medicine (M.D.)

Dr. Aigin Heydari , MD

Student in an Organized Health Care Education/Training Program

NPI 1003618505

Doctor of Medicine (M.D.)

Dr. Saad Waraich , MD

Internal Medicine

NPI 1013599182

Doctor of Medicine (M.D.)

NPI 1023712304

Bachelor of Medicine, Bachelor of Surgery (M.B.B.S.)

Sneha Kumar

Internal Medicine

NPI 1033968243
NPI 1043576341

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

10 Historical Events
📍
Updated Practice Location March 03, 2026

Registered at 4201 W MEDICAL CENTER DR, MCHENRY, IL 600508409 (Tel: 8153445000)

📍
Updated Business Mailing Address March 03, 2026

Registered at 164 N PEORIA ST APT 3005, CHICAGO, IL 606072372 (Tel: 2036884242)

👤
Provider Name / Credentials Updated March 03, 2026

Recorded as ADRIENNE MEJIA, MD MPH

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 03, 2026

Anesthesiology (License #036160694 in IL)

NPI Profile Active May 22, 2018

NPI status registered as active in NPPES database

📍
Updated Practice Location May 22, 2018

Registered at 20 YORK STREET YNHH, TOMPKINS 226, NEW HAVEN, CT 065103220 (Tel: 2036884242)

📍
Updated Business Mailing Address May 22, 2018

Registered at 20 YORK STREET YNHH, TOMPKINS 226, NEW HAVEN, CT 065103220 (Tel: 2036884242)

👤
Provider Name / Credentials Updated May 22, 2018

Recorded as ADRIENNE MEJIA, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 22, 2018

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration May 22, 2018

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: 1043701485
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 22, 2018
Last Update: March 03, 2026
Sole Proprietor: Yes

Mailing Address

164 N Peoria St Apt 3005

Chicago, IL 606072372

Phone: 2036884242

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.