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

NPI Status: Active since April 17, 2007

Contact Information

890 GARFIELD AVE
SUITE 209
LIBERTYVILLE, IL
ZIP 60048
Phone: (847) 367-3843
Fax: (847) 367-3063

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  • Organization
  • Internal Medicine
  • CLIA Number: 14D0982801
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 02-04-2027

About ILLINOIS INTERNAL MEDICINE LTD

This page provides the complete NPI Profile along with additional information for Illinois Internal Medicine Ltd, an internist established in Libertyville, Illinois operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1659597730 assigned on April 2007. The practitioner's primary taxonomy code is 207R00000X with license number 042-617825 (IL). The provider is registered as an organization and their NPI record was last updated 18 years ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Mark James Chyna M.d. (President)

NPI
1659597730
Provider Name
ILLINOIS INTERNAL MEDICINE LTD
Entity Type
Organization
Location Address
890 GARFIELD AVE SUITE 209 LIBERTYVILLE, IL 60048
Location Phone
(847) 367-3843
Location Fax
(847) 367-3063
Mailing Address
890 GARFIELD AVE # 209 LIBERTYVILLE, IL 60048
Mailing Phone
(847) 367-3843
Mailing Fax
(847) 367-3063
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
04-17-2007
Last Update Date
12-14-2008
Code Navigator

An internist like Illinois Internal Medicine Ltd is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
042-617825
License State
IL
Taxonomy Description
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.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. MARK JAMES CHYNA M.D.

Authorized Official Title
PRESIDENT
Authorized Official Phone
(847) 367-3060

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
1740273507OTHER (01)ILMARK CHYNA MD INDIV. NPI

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
14D0982801
Facility Type
Physician Office
Certificate Effective Date
February 05, 2025
Certificate Expiration Date
February 04, 2027
Laboratory Director
MARK J. CHYNA MD
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Illinois Internal Medicine Ltd to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1659597730, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
9
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
9
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
7
Unchanged
Pos 9
3
Doubled → 6
Check
0
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 5 → 10 → 1 5 → 10 → 1 7 → 14 → 5 3 → 6

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 6 + 1 + 0 + 9 + 1 + 0 + 9 + 1 + 4 + 7 + 6 + 24 = 70

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 70 is 70. The difference is the calculated check digit.

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1659597730.

Other Providers at the Same Location


The following 14 providers are registered at the same or a nearby location.

Specialist
890 GARFIELD AVE, SUITE 106
LIBERTYVILLE, IL 60048
Clinic/Center (Medical Specialty)
890 GARFIELD AVE, SUITE 200
LIBERTYVILLE, IL 60048
Internal Medicine
890 GARFIELD AVE, SUITE 209
LIBERTYVILLE, IL 60048
Surgery
890 GARFIELD AVE, 206
LIBERTYVILLE, IL 60048
Clinical Nurse Specialist (Acute Care)
890 GARFIELD AVE, SUITE 209
LIBERTYVILLE, IL 60048
Specialist
890 GARFIELD AVE, 200
LIBERTYVILLE, IL 60048
Obstetrics & Gynecology
890 GARFIELD AVE
LIBERTYVILLE, IL 60048
Obstetrics & Gynecology
890 GARFIELD AVE, 104
LIBERTYVILLE, IL 60048
Internal Medicine (Gastroenterology)
890 GARFIELD AVE, STE 103
LIBERTYVILLE, IL 60048
Internal Medicine (Gastroenterology)
890 GARFIELD AVE, SUITE 103
LIBERTYVILLE, IL 60048
Specialist
890 GARFIELD AVE, SUITE 203
LIBERTYVILLE, IL 60048
Physician Assistant (Surgical)
890 GARFIELD AVE, SUITE 101
LIBERTYVILLE, IL 60048
Thoracic Surgery (Cardiothoracic Vascular Surgery)
890 GARFIELD AVE, SUITE 101
LIBERTYVILLE, IL 60048
Colon & Rectal Surgery
890 GARFIELD AVE
LIBERTYVILLE, IL 60048

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1659597730, enumerated as an "organization" on April 17, 2007.

The provider is located at 890 GARFIELD AVE SUITE 209 LIBERTYVILLE, IL 60048 and the phone number is (847) 367-3843.

Internal Medicine with taxonomy code 207R00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.