Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Emmanuel Nnanna Njoku, MD

Individual provider Internal Medicine Physician · NPI 1689981045

Emmanuel Nnanna Njoku, MD is registered under Infectious Disease in Libertyville, Illinois. Qualified in 2002, 24 years ago. Practices with Infectious Disease Consultants of Northern Illinois SC, a 4-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
24
Licensed in
IL
In the registry since
2010
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1880 W Winchester Rd 106
Libertyville, IL 60048-5341 Not confirmed with CMS for 10 years — call before visiting
Phone: (732) 423-8404
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036.126619 (IL)

Record details

NPI number1689981045
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 8, 2010
Last updated in NPPESMay 19, 2016

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Infectious Disease Consultants Of Northern Illinois Sc — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients671
Services billed 2,047 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Infectious Disease Consultants of Northern Illinois SC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Libertyville