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ALLIANCE GASTROENTEROLOGY GROUP LLC
NPI 1215759501
Internal Medicine - Gastroenterology in Libertyville, IL

Active since October 28, 2024
1795 N BUTTERFIELD RD STE 201, LIBERTYVILLE, IL 60048(847) 500-9380(833) 523-2430 Get Directions Write a Review

NPPES record last updated: October 28, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Alliance Gastroenterology Group Llc NPPES

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

ALLIANCE GASTROENTEROLOGY GROUP LLC (NPI 1215759501) is a healthcare organization registered as a gastroenterology in Libertyville, Illinois and active in the NPI registry since October 2024. The organization lists Dalia Thomas, Chief Operating Officer, as its authorized official.

NPPES Registry Identity

NPI1215759501
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameALLIANCE GASTROENTEROLOGY GROUP LLC
Location Address1795 N BUTTERFIELD RD STE 201Libertyville, IL 60048-1212
Mailing Address6 Broadleys CtBannockburn, IL 60015-1511 · (847) 909-2088
Phone(847) 500-9380
Fax(833) 523-2430
Organization SubpartNo
Authorized OfficialDalia ThomasChief Operating Officer · (847) 909-2088
Enumeration DateOctober 28, 2024
NPPES CertifiedOctober 28, 2024
✔ NPI 1215759501 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
Definition
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.
1795 N BUTTERFIELD RD STE 201, Libertyville, IL 60048
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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)

Alliance Gastroenterology Group 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 Alliance Gastroenterology Group LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Shahid Ilahi, M.D.
Gastroenterology
NPI 1508867078
22N285 PEPPER RD SUITE 303
Lake Barrington, IL 60010
(630) 952-1412
✔ PECOS✔ Accepts Medicare13 mi

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

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 Alliance Gastroenterology Group LLC's NPI number?

The NPI number for Alliance Gastroenterology Group LLC is 1215759501. It was assigned to this organization in the NPPES registry on October 28, 2024.

Where is Alliance Gastroenterology Group LLC located?

Alliance Gastroenterology Group LLC is located at 1795 N Butterfield Rd Ste 201, Libertyville, IL 60048. The listed phone number is (847) 500-9380.

What is Alliance Gastroenterology Group LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Alliance Gastroenterology Group LLC enrolled in Medicare?

Yes. Alliance Gastroenterology Group LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Alliance Gastroenterology Group LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Gastroenterology) reassigns their Medicare billing to Alliance Gastroenterology Group 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.

When was this NPI record last updated?

The NPPES record for Alliance Gastroenterology Group LLC was last updated on October 28, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months 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.