DR. CHIMUANYA OKOLI MD
NPI 1003444779
Internal Medicine - Sleep Medicine in Chicago, IL

Active since March 30, 2020PECOS EnrolledAccepts Medicare Assignment
836 W WELLINGTON AVE, CHICAGO, IL 60657(773) 296-5424 Get Directions Write a Review

NPPES record last updated: August 12, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Aug 12, 2025, Jan 10, 2021, Jul 1, 2020 and 1 more (4 updates tracked since 2020).

About Dr. Chimuanya Okoli Md NPPES

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

DR. CHIMUANYA OKOLI MD (NPI 1003444779) is an individual sleep medicine provider in Chicago, Illinois, licensed in South Carolina (94081) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, is affiliated with Self Regional Healthcare, and maintains a secondary practice location in Greenwood.

NPPES Registry Identity

NPI1003444779
Entity TypeIndividualFemale
Primary Taxonomy207RS0012X
Provider Legal NameDR. CHIMUANYA OKOLICredential: MD
Location Address836 W WELLINGTON AVEChicago, IL 60657-5147
Mailing Address836 W Wellington AveChicago, IL 60657-5147 · (773) 296-5424
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateMarch 30, 2020
Last NPPES UpdateAugust 12, 20254 updates tracked since enumeration
NPPES CertifiedAugust 12, 2025
NPI 1003444779 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Sleep MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RS0012X
License Licensed in SC · 94081
Definition

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.

Also ListedInternal MedicineTaxonomy 207R00000X · License 125.076689 (IL)
836 W WELLINGTON AVE, Chicago, IL 60657

Secondary Practice Location 1

Location 1104 Liner DrGreenwood, SC 29646-2310 · Phone (864) 227-1115

Accepted 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. Chimuanya Okoli 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 ID6406211333
PECOS Enrollment IDI20241019000299, I20250710000212
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.

Hospital Affiliations CMS Care Compare

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

Self Regional Healthcare

Acute Care Hospitals · Greenwood, SC
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number420071
Location1325 Spring StreetGreenwood, SC 29646 · Greenwood County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60657 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.

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.

Emergency Medicine
836 W WELLINGTON AVE
CHICAGO, IL 60657
Speech-Language Pathologist
836 W WELLINGTON AVE
CHICAGO, IL 60657
Nurse Anesthetist, Certified Registered
836 W WELLINGTON AVE
CHICAGO, IL 60657
Anesthesiology
836 W WELLINGTON AVE
CHICAGO, IL 60657
Anesthesiology
836 W WELLINGTON AVE
CHICAGO, IL 60657
Dietitian, Registered
836 W WELLINGTON AVE, FOOD AND NUTRITION DEPT.
CHICAGO, IL 60657
Nurse Practitioner
836 W WELLINGTON AVE
CHICAGO, IL 60657
Radiology (Diagnostic Radiology)
836 W WELLINGTON AVE
CHICAGO, IL 60657

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 Chimuanya Okoli's NPI number?

The NPI number for Chimuanya Okoli is 1003444779. It was assigned to this individual provider in the NPPES registry on March 30, 2020.

Where is Chimuanya Okoli located?

Chimuanya Okoli practices at 836 W Wellington Ave, Chicago, IL 60657. The listed phone number is (773) 296-5424.

What is Chimuanya Okoli's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Sleep Medicine, with taxonomy code 207RS0012X.

Is Chimuanya Okoli enrolled in Medicare?

Yes. Chimuanya Okoli 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 Chimuanya Okoli accept?

Health plans from BlueCross BlueShield of South Carolina, CareSource, First Choice Next and Molina Healthcare list Chimuanya Okoli 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 Chimuanya Okoli affiliated with any hospitals?

According to CMS data, Chimuanya Okoli is affiliated with Self Regional Healthcare.

When was this NPI record last updated?

The NPPES record for Chimuanya Okoli was last updated on August 12, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.