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ADRIENNE B MEJIA MD MPH
NPI 1043701485
Anesthesiology in Mchenry, IL

Active since May 22, 2018PECOS EnrolledAccepts Medicare Assignment
4201 W MEDICAL CENTER DR, MCHENRY, IL 60050(815) 344-5000(815) 344-3347 Get Directions Write a Review

NPPES record last updated: March 3, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 3, 2026, May 22, 2018 (2 updates tracked since 2018).

About Adrienne B Mejia Md Mph NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ADRIENNE B MEJIA MD MPH (NPI 1043701485) is an individual anesthesiology provider in Mchenry, Illinois, licensed in Illinois (036160694) and active in the NPI registry since May 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in New Haven, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1043701485
Entity TypeIndividualFemale
Primary Taxonomy207L00000X
Provider Legal NameADRIENNE B MEJIACredential: MD MPH
Location Address4201 W MEDICAL CENTER DRMchenry, IL 60050-8409
Mailing Address164 N Peoria St Apt 3005Chicago, IL 60607-2372 · (203) 688-4242
Phone(815) 344-5000
Fax(815) 344-3347
Sole ProprietorYes
Medical School CMSOtherGraduated 2018
Enumeration DateMay 22, 2018
Last NPPES UpdateMarch 3, 20262 updates tracked since enumeration
NPPES CertifiedMarch 3, 2026
✔ NPI 1043701485 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in IL · 036160694
Definition
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
4201 W MEDICAL CENTER DR, Mchenry, IL 60050
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Secondary Practice Location 1

Location 120 York Street YNHH, Tompkins 226New Haven, CT 06510-3220 · Phone (203) 688-4242

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Adrienne B Mejia Md Mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6305195314
PECOS Enrollment IDI20230815003935
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AIGIN HEYDARI MD
Student in an Organized Health Care Education/Training Program
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
DR. KEILLA AMORIM SCHMIDT M.D.
Surgery (Surgical Critical Care)
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 759-4530
CENTEGRA CLINICAL LABORATORIES, LLC
Clinical Medical Laboratory
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 759-4800
DR. CORY EDWARD MELLON MD
Hospitalist
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 759-4323
SAAD AHMAD WARAICH M.D
Internal Medicine
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
SNEHA KUMAR
Internal Medicine
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
DR. SHAWN MARTEN FALITZ M.D.
Anesthesiology
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000
NILAM M PATEL PA-C
Physician Assistant
4201 W MEDICAL CENTER DR
MCHENRY, IL 60050
McHenry County (815) 344-5000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Adrienne Mejia's NPI number?

The NPI number for Adrienne Mejia is 1043701485. It was assigned to this individual provider in the NPPES registry on May 22, 2018.

Where is Adrienne Mejia located?

Adrienne Mejia practices at 4201 W Medical Center Dr, Mchenry, IL 60050. The listed phone number is (815) 344-5000.

What is Adrienne Mejia's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Adrienne Mejia enrolled in Medicare?

Yes. Adrienne Mejia is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Adrienne Mejia was last updated on March 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.