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

Active since April 25, 2012CLIA 14D0961620 · Waiver
2500 RIDGE AVE, SUITE 104, EVANSTON, IL 60201(847) 869-1192 Get Directions Write a Review

NPPES record last updated: September 15, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 15, 2022, Aug 30, 2022 (2 updates tracked since 2022).

About Evanston Premier Healthcare Research Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

EVANSTON PREMIER HEALTHCARE RESEARCH LLC (NPI 1508124744) is a healthcare organization registered as an internal medicine in Evanston, Illinois and active in the NPI registry since April 2012. The organization holds a CLIA Waiver certificate valid through December 3, 2026 and lists Jeffrey George Geohas, Owner, as its authorized official.

NPPES Registry Identity

NPI1508124744
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameEVANSTON PREMIER HEALTHCARE RESEARCH LLC
Location Address2500 RIDGE AVE, SUITE 104Evanston, IL 60201-2455
Mailing Address2500 Ridge Ave, Suite 104Evanston, IL 60201-2455 · (847) 869-1192
Phone(847) 869-1192
Organization SubpartNo
Authorized OfficialJeffrey George GeohasOwner · (847) 869-1192
Enumeration DateApril 25, 2012
Last NPPES UpdateSeptember 15, 20222 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2022
✔ NPI 1508124744 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036093330
Definition
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.
2500 RIDGE AVE, Evanston, IL 60201
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Evanston Premier Healthcare Research Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Evanston Premier Healthcare Research LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Jeffrey Geohas, M.D.
Internal Medicine
NPI 1609846351
2500 RIDGE AVE SUITE 104
Evanston, IL 60201
(847) 869-1192
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 14D0961620

Evanston Premier Health Care Research LLC · Skokie, IL
Active · expires Dec 3, 2026
CLIA Number14D0961620
Laboratory TypePhysician Office
Certificate Effective DateDecember 4, 2024
Certificate Expiration DateDecember 3, 2026
Laboratory DirectorJeffrey Geohas
Laboratory Phone(847) 869-1192
Laboratory LocationEvanston Premier Health Care Research LLC10024 Skokie Blvd - Ste 306, Skokie, IL 60077
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Evanston Premier Healthcare Research LLC's NPI number?

The NPI number for Evanston Premier Healthcare Research LLC is 1508124744. It was assigned to this organization in the NPPES registry on April 25, 2012.

Where is Evanston Premier Healthcare Research LLC located?

Evanston Premier Healthcare Research LLC is located at 2500 Ridge Ave Suite 104, Evanston, IL 60201. The listed phone number is (847) 869-1192.

What is Evanston Premier Healthcare Research LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Evanston Premier Healthcare Research LLC enrolled in Medicare?

Yes. Evanston Premier Healthcare Research LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Evanston Premier Healthcare Research LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Evanston Premier Healthcare Research LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Evanston Premier Healthcare Research LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 14D0961620) is associated with this NPI, valid through December 3, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Evanston Premier Healthcare Research LLC was last updated on September 15, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.