WAHID KASSAR MD LTD
NPI 1356961304
Internal Medicine - Endocrinology, Diabetes & Metabolism in Chicago, IL
NPI Status: Active since April 20, 2020
Contact Information
7447 W TALCOTT AVE STE 467
CHICAGO, IL
ZIP 60631
Phone: (630) 866-3636
Fax: (773) 692-2035
- Organization
- Internal Medicine
- Endocrinology, Diabetes & Metabolism
- CLIA Number: 14D2193248
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 09-17-2026
About WAHID KASSAR MD LTD
This page provides the complete NPI Profile along with additional information for Wahid Kassar Md Ltd, an internist established in Chicago, Illinois operating as a Internal Medicine, focusing in endocrinology, diabetes & metabolism . The healthcare provider is registered in the NPI registry with number 1356961304 assigned on April 2020. The practitioner's primary taxonomy code is 207RE0101X. The provider is registered as an organization and their NPI record was last updated one year 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 provider's
- NPI
- 1356961304
- Provider Legal Name
- WAHID KASSAR MD LTD
- Other Organization Name
- Other Name Type
- (6)
- Entity Type
- Organization
- Location Address
- 7447 W TALCOTT AVE STE 467 CHICAGO, IL 60631
- Location Phone
- (630) 866-3636
- Location Fax
- (773) 692-2035
- Mailing Address
- 7447 W TALCOTT AVE STE 467 CHICAGO, IL 60631
- Mailing Phone
- (630) 866-3636
- Mailing Fax
- (773) 692-2035
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 04-20-2020
- Last Update Date
- 10-02-2025
- Code Navigator
An internist like Wahid Kassar Md 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
Secondary Locations
- 900 S Frontage Rd Ste 375
Woodridge, IL 60517
(630) 866-3636
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 Endocrinology, Diabetes & Metabolism
- Taxonomy Code
- 207RE0101X
- Type
- Allopathic & Osteopathic Physicians
- Taxonomy Description
- An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
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.
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
- 14D2193248
- Facility Type
- Physician Office
- Certificate Effective Date
- September 18, 2024
- Certificate Expiration Date
- September 17, 2026
- Laboratory Director
- WAHID KASSAR M D
- Certificate Type
- Certificate of Waiver
- Certificate Type Description
- This CLIA certificate is issued to Wahid Kassar Md 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 1356961304, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 56 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 2 providers are registered at the same or a nearby location.
CHICAGO, IL 60631
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1356961304, enumerated as an "organization" on April 20, 2020.
The provider is located at 7447 W TALCOTT AVE STE 467 CHICAGO, IL 60631 and the phone number is (630) 866-3636.
Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.
