PREMIER GI PLLC
NPI 1326904178
Internal Medicine - Gastroenterology in Oak Brook, IL
NPI Status: Active since December 24, 2025
Contact Information
2021 MIDWEST RD STE 200
OAK BROOK, IL
ZIP 60523
Phone: (224) 465-9702
- Organization
- Internal Medicine
- Gastroenterology
About PREMIER GI PLLC
This page provides the complete NPI Profile along with additional information for Premier Gi Pllc, an internist established in Oak Brook, Illinois operating as a Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1326904178 assigned on December 2025. The practitioner's primary taxonomy code is 207RG0100X. The provider is registered as an organization and their NPI record was last updated December 2025. 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 Zohair Ahmed Md (Owner)
- NPI
- 1326904178
- Provider Name
- PREMIER GI PLLC
- Entity Type
- Organization
- Location Address
- 2021 MIDWEST RD STE 200 OAK BROOK, IL 60523
- Location Phone
- (224) 465-9702
- Mailing Address
- 2021 MIDWEST RD STE 200 OAK BROOK, IL 60523
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 12-24-2025
- Last Update Date
- 12-24-2025
- Code Navigator
An internist like Premier Gi Pllc 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 Gastroenterology
- Taxonomy Code
- 207RG0100X
- Type
- Allopathic & Osteopathic Physicians
- 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.
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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 1326904178, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).
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 62 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 12 providers are registered at the same or a nearby location.
OAK BROOK, IL 60523
OAK BROOK, IL 60523
OAK BROOK, IL 60523
OAK BROOK, IL 60523
OAK BROOK, IL 60523
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1326904178, enumerated as an "organization" on December 24, 2025.
The provider is located at 2021 MIDWEST RD STE 200 OAK BROOK, IL 60523 and the phone number is (224) 465-9702.
Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.
