COMPREHENSIVE GASTROINTESTINAL HEALTH, LLC
NPI 1427541721
Internal Medicine - Gastroenterology in Northbrook, IL

NPI Status: Active since June 11, 2018

Contact Information

40 SKOKIE BLVD STE 110
NORTHBROOK, IL
ZIP 60062
Phone: (224) 407-4400
Fax: (224) 407-2255

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  • Organization
  • Internal Medicine
  • Gastroenterology
  • CLIA Number: 14D2289804
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 04-10-2027

About COMPREHENSIVE GASTROINTESTINAL HEALTH, LLC

This page provides the complete NPI Profile along with additional information for Comprehensive Gastrointestinal Health, Llc, an internist established in Northbrook, Illinois operating as a Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1427541721 assigned on June 2018. The practitioner's primary taxonomy code is 207RG0100X with license number 036108334 (IL). The provider is registered as an organization and their NPI record was last updated 2 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 Ms. Karen Matthews (Biller)

NPI
1427541721
Provider Name
COMPREHENSIVE GASTROINTESTINAL HEALTH, LLC
Entity Type
Organization
Location Address
40 SKOKIE BLVD STE 110 NORTHBROOK, IL 60062
Location Phone
(224) 407-4400
Location Fax
(224) 407-2255
Mailing Address
40 SKOKIE BLVD STE 110 NORTHBROOK, IL 60062
Mailing Phone
(224) 407-4400
Mailing Fax
(224) 407-2255
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
06-11-2018
Last Update Date
09-19-2024
Code Navigator

An internist like Comprehensive Gastrointestinal Health, Llc 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

Secondary Locations

  • 950 Technology Way Ste 250
    Libertyville, IL 60048
    (224) 407-4400

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 Gastroenterology

Taxonomy Code
207RG0100X
Type
Allopathic & Osteopathic Physicians
License No.
036108334
License State
IL
Taxonomy Description
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal 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

MS. KAREN MATTHEWS

Authorized Official Title
BILLER
Authorized Official Phone
(773) 322-6517

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
036108334MEDICAID (05)IL 

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
14D2289804
Facility Type
Physician Office
Certificate Effective Date
April 11, 2025
Certificate Expiration Date
April 10, 2027
Laboratory Director
JIE SONG
Certificate Type
Certificate of Compliance
Certificate Type Description
This CLIA certificate is issued to Comprehensive Gastrointestinal Health, Llc after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements. This type of certificate is issued to laboratories that perform nonwaived (moderate and/or high complexity) testing.

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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 1427541721, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 4 + 7 + 1 + 0 + 4 + 2 + 7 + 4 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1427541721.

Other Providers at the Same Location


The following 5 providers are registered at the same or a nearby location.

Counselor
40 SKOKIE BLVD STE 110
NORTHBROOK, IL 60062
Physical Therapist
40 SKOKIE BLVD STE 110
NORTHBROOK, IL 60062
Nurse Practitioner (Family)
40 SKOKIE BLVD STE 110
NORTHBROOK, IL 60062
Dietitian, Registered
40 SKOKIE BLVD STE 110
NORTHBROOK, IL 60062
Psychologist
40 SKOKIE BLVD STE 110
NORTHBROOK, IL 60062

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1427541721, enumerated as an "organization" on June 11, 2018.

The provider is located at 40 SKOKIE BLVD STE 110 NORTHBROOK, IL 60062 and the phone number is (224) 407-4400.

Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.

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