EVANSTON PREMIER HEALTHCARE RESEARCH LLC
NPI 1508124744
Internal Medicine in Evanston, IL

NPI Status: Active since April 25, 2012

Contact Information

2500 RIDGE AVE
SUITE 104
EVANSTON, IL
ZIP 60201
Phone: (847) 869-1192

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  • Organization
  • Internal Medicine
  • CLIA Number: 14D0961620
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 12-03-2026

About EVANSTON PREMIER HEALTHCARE RESEARCH LLC

This page provides the complete NPI Profile along with additional information for Evanston Premier Healthcare Research Llc, an internist established in Evanston, Illinois operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1508124744 assigned on April 2012. The practitioner's primary taxonomy code is 207R00000X with license number 036093330 (IL). The provider is registered as an organization and their NPI record was last updated 4 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 Jeffrey George Geohas Md (Owner)

NPI
1508124744
Provider Name
EVANSTON PREMIER HEALTHCARE RESEARCH LLC
Entity Type
Organization
Location Address
2500 RIDGE AVE SUITE 104 EVANSTON, IL 60201
Location Phone
(847) 869-1192
Mailing Address
2500 RIDGE AVE SUITE 104 EVANSTON, IL 60201
Mailing Phone
(847) 869-1192
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
04-25-2012
Last Update Date
09-15-2022
Code Navigator

An internist like Evanston Premier Healthcare Research 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

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.
036093330
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.

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

JEFFREY GEORGE GEOHAS MD

Authorized Official Title
OWNER
Authorized Official Phone
(847) 869-1192

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
14D0961620
Facility Type
Physician Office
Certificate Effective Date
December 04, 2024
Certificate Expiration Date
December 03, 2026
Laboratory Director
JEFFREY GEOHAS
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Evanston Premier Healthcare Research Llc 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 1508124744, 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 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.

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

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 0 + 8 + 2 + 2 + 8 + 7 + 8 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1508124744.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Podiatrist
2500 RIDGE AVE, SUITE 110
EVANSTON, IL 60201
Obstetrics & Gynecology (Reproductive Endocrinology)
2500 RIDGE AVE, #200
EVANSTON, IL 60201
Dentist (Oral and Maxillofacial Surgery)
2500 RIDGE AVE, SUITE 302
EVANSTON, IL 60201
Internal Medicine
2500 RIDGE AVE, SUITE 104
EVANSTON, IL 60201
Internal Medicine
2500 RIDGE AVE, SUITE 104
EVANSTON, IL 60201
Internal Medicine
2500 RIDGE AVE, STE 210
EVANSTON, IL 60201
Internal Medicine
2500 RIDGE AVE, STE 305
EVANSTON, IL 60201
Internal Medicine
2500 RIDGE AVE, STE 210
EVANSTON, IL 60201
Podiatrist
2500 RIDGE AVE, SUITE 110
EVANSTON, IL 60201
Ophthalmology
2500 RIDGE AVE, SUITE 104
EVANSTON, IL 60201
Obstetrics & Gynecology
2500 RIDGE AVE, 210
EVANSTON, IL 60201
Social Worker (Clinical)
2500 RIDGE AVE, SUITE 305
EVANSTON, IL 60201
Dentist (General Practice)
2500 RIDGE AVE, SUITE 102
EVANSTON, IL 60201
Surgery
2500 RIDGE AVE, SUITE 107
EVANSTON, IL 60201
Specialist
2500 RIDGE AVE, SUITE 301
EVANSTON, IL 60201
Physical Therapist
2500 RIDGE AVE, SUITE 309
EVANSTON, IL 60201
Obstetrics & Gynecology
2500 RIDGE AVE, SUITE 210
EVANSTON, IL 60201
Social Worker (Clinical)
2500 RIDGE AVE, SUITE 305
EVANSTON, IL 60201
Specialist
2500 RIDGE AVE, SUITE 200
EVANSTON, IL 60201
Internal Medicine
2500 RIDGE AVE, SUITE # 210
EVANSTON, IL 60201

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1508124744, enumerated as an "organization" on April 25, 2012.

The provider is located at 2500 RIDGE AVE SUITE 104 EVANSTON, IL 60201 and the phone number is (847) 869-1192.

Internal Medicine with taxonomy code 207R00000X.