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ILLINOIS INTERNAL MEDICINE LTD
NPI 1659597730
Internal Medicine in Libertyville, IL

Active since April 17, 2007CLIA 14D0982801 · Waiver
890 GARFIELD AVE, SUITE 209, LIBERTYVILLE, IL 60048(847) 367-3843(847) 367-3063 Get Directions Write a Review

NPPES record last updated: December 14, 2008. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Illinois Internal Medicine Ltd NPPES

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

ILLINOIS INTERNAL MEDICINE LTD (NPI 1659597730) is a healthcare organization registered as an internal medicine in Libertyville, Illinois and active in the NPI registry since April 2007. The organization holds a CLIA Waiver certificate valid through February 4, 2027 and lists Mark James Chyna, President, as its authorized official.

NPPES Registry Identity

NPI1659597730
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameILLINOIS INTERNAL MEDICINE LTD
Location Address890 GARFIELD AVE, SUITE 209Libertyville, IL 60048-4723
Mailing Address890 Garfield Ave, # 209Libertyville, IL 60048-4723 · (847) 367-3843 · Fax (847) 367-3063
Phone(847) 367-3843
Fax(847) 367-3063
Organization SubpartNo
Authorized OfficialMark James ChynaPresident · (847) 367-3060
Enumeration DateApril 17, 2007
Last NPPES UpdateDecember 14, 2008
✔ NPI 1659597730 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 042-617825
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
890 GARFIELD AVE, Libertyville, IL 60048
Open in Google Maps ↗

Other Identifiers 1

Other1740273507IL · Mark Chyna Md Indiv. Npi

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 14D0982801

Illinois Internal Medicine · Libertyville, IL
Active · expires Feb 4, 2027
CLIA Number14D0982801
Laboratory TypePhysician Office
Certificate Effective DateFebruary 5, 2025
Certificate Expiration DateFebruary 4, 2027
Laboratory DirectorMark J. Chyna MD
Laboratory Phone(847) 367-3060
Laboratory LocationIllinois Internal Medicine890 Garfield Avenue, #209, Libertyville, IL 60048
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 14

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

GASTROENTEROLOGY CONSULTANTS OF LIBERTYVILLE LTD
Internal Medicine (Gastroenterology)
890 GARFIELD AVE, SUITE 103
LIBERTYVILLE, IL 60048
Lake County (847) 680-5858
RUTH MCGAHA ACNP
Clinical Nurse Specialist (Acute Care)
890 GARFIELD AVE, SUITE 209
LIBERTYVILLE, IL 60048
Lake County (847) 328-1853
MR. RYAN JOSEPH HOUSNER PA-C
Physician Assistant (Surgical)
890 GARFIELD AVE, SUITE 101
LIBERTYVILLE, IL 60048
Lake County (847) 990-5636
THE LIBERTYVILLE SURGEONS, S C
Specialist
890 GARFIELD AVE, SUITE 203
LIBERTYVILLE, IL 60048
Lake County (847) 367-1800
BURTON MILLER, M.D., S.C.
Surgery
890 GARFIELD AVE, 206
LIBERTYVILLE, IL 60048
Lake County (847) 367-1070
DR. ROBERT A HADESMAN M.D.
Internal Medicine (Gastroenterology)
890 GARFIELD AVE, STE 103
LIBERTYVILLE, IL 60048
Lake County (847) 680-5858
DR. KRISTIN NICOLE VERCILLO M.D.
Colon & Rectal Surgery
890 GARFIELD AVE
LIBERTYVILLE, IL 60048
Lake County (847) 816-7495
OB/GYNE ASSOCIATES OF LAKE COUNTY, S.C.
Clinic/Center (Medical Specialty)
890 GARFIELD AVE, SUITE 200
LIBERTYVILLE, IL 60048
Lake County (847) 549-1818

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 Illinois Internal Medicine Ltd's NPI number?

The NPI number for Illinois Internal Medicine Ltd is 1659597730. It was assigned to this organization in the NPPES registry on April 17, 2007.

Where is Illinois Internal Medicine Ltd located?

Illinois Internal Medicine Ltd is located at 890 Garfield Ave Suite 209, Libertyville, IL 60048. The listed phone number is (847) 367-3843.

What is Illinois Internal Medicine Ltd's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Does Illinois Internal Medicine Ltd hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 14D0982801) is associated with this NPI, valid through February 4, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Illinois Internal Medicine Ltd was last updated on December 14, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.