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DR. CHIOMA ADAIJE ONYENWENYI MD
NPI 1780972182
Internal Medicine - Endocrinology, Diabetes & Metabolism in Chicago, IL

Active since July 19, 2011PECOS EnrolledAccepts Medicare Assignment
1901 W. HARRISON, CHICAGO, IL 60612(312) 864-6000 Get Directions Write a Review

NPPES record last updated: January 9, 2024. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Chioma Adaije Onyenwenyi Md NPPES

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

DR. CHIOMA ADAIJE ONYENWENYI MD (NPI 1780972182) is an individual endocrinology, diabetes & metabolism provider in Chicago, Illinois, licensed in Illinois (036134539) and active in the NPI registry since July 2011. She is enrolled in Medicare PECOS, is affiliated with Rush Oak Park Hospital, and is a graduate of Other (2009).

NPPES Registry Identity

NPI1780972182
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameDR. CHIOMA ADAIJE ONYENWENYICredential: MD
Location Address1901 W. HARRISONChicago, IL 60612-3714
Mailing Address40 E 9th St Apt 916Chicago, IL 60605-2145 · (425) 894-7907
Phone(312) 864-6000
Sole ProprietorNo
Medical School CMSOtherGraduated 2009
Enumeration DateJuly 19, 2011
Last NPPES UpdateJanuary 9, 2024
NPPES CertifiedJanuary 9, 2024
✔ NPI 1780972182 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in IL · 036134539
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedInternal MedicineTaxonomy 207R00000X · License 125.059030 (IL)
1901 W. HARRISON, Chicago, IL 60612
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware.Insurance ›

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

Dr. Chioma Adaije Onyenwenyi Md 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 ID1355636473
PECOS Enrollment IDI20160827000374
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.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
173 services154 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
102 services92 patients
Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251
This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.
62 services47 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
52 services39 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
31 services28 patients
Ultrasound scan of head and neck soft tissue 76536
An ultrasound scan of the head and neck soft tissue is a non-invasive procedure that uses sound waves to create images of the soft tissues in these areas. It helps identify any abnormalities or issues, such as tumors, cysts, or infections. It's painless and doesn't involve radiation.
23 services23 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Rush Oak Park Hospital

Acute Care Hospitals · Oak Park, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140063
Location520 S Maple AveOak Park, IL 60304 · Cook County
Emergency services

Rush University Medical Center

Acute Care Hospitals · Chicago, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140119
Location1653 West Congress ParkwayChicago, IL 60612 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
28 suppliers70 claims228 services$6.03 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
21 suppliers49 claims79 services$1.05 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
13 suppliers201 claims201 services$182.90 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 11

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

MR. KINJI ARIKAWA MD/MBBS
Internal Medicine
1901 W. HARRISON
CHICAGO, IL 60612
Cook County (312) 864-6000
MR. ALEJANDRO JAVIER NIETO DOMINGUEZ M.D.
Internal Medicine
1901 W. HARRISON
CHICAGO, IL 60612
Cook County (312) 864-6000
DR. JULIE ROSE ZAMORA PT, DPT
Physical Therapist
1901 W. HARRISON, ROOM 2620 2ND FLOOR JSH CLINIC N
CHICAGO, IL 60612
Cook County (312) 864-3651
MS. DEBORAH LEE WOLEN APN
Nurse Practitioner (Family)
1901 W. HARRISON
CHICAGO, IL 60612
Cook County (312) 864-6000
DAKSH AHLUWALIA MD
Internal Medicine
1901 W. HARRISON
CHICAGO, IL 60612
Cook County (312) 864-6000
ABDUL-RAHIM ZIYAD ABDUL-RAHIM SHILBAYEH
Internal Medicine
1901 W. HARRISON
CHICAGO, IL 60612
Cook County (312) 864-6000
ANUPAMA THAKRAR M.D.
Radiology (Radiation Oncology)
1901 W. HARRISON, SUITE LL-500
CHICAGO, IL 60612
Cook County (312) 864-3838
BRENDA L BARNES PA
Physician Assistant
1901 W. HARRISON, DEPARTMENT OF EMERGENCY MEDICINE
CHICAGO, IL 60612
Cook County (312) 864-0060

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 Chioma Onyenwenyi's NPI number?

The NPI number for Chioma Onyenwenyi is 1780972182. It was assigned to this individual provider in the NPPES registry on July 19, 2011.

Where is Chioma Onyenwenyi located?

Chioma Onyenwenyi practices at 1901 W. Harrison, Chicago, IL 60612. The listed phone number is (312) 864-6000.

What is Chioma Onyenwenyi's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Chioma Onyenwenyi enrolled in Medicare?

Yes. Chioma Onyenwenyi 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.

What insurance does Chioma Onyenwenyi accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Chioma Onyenwenyi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Chioma Onyenwenyi affiliated with any hospitals?

According to CMS data, Chioma Onyenwenyi is affiliated with Rush Oak Park Hospital and Rush University Medical Center.

When was this NPI record last updated?

The NPPES record for Chioma Onyenwenyi was last updated on January 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.