GASTROINTESTINAL AND LIVER DISORDERS SPECIALISTS PLLC
NPI 1881996197
Internal Medicine - Gastroenterology in Southfield, MI
About Gastrointestinal And Liver Disorders Specialists Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GASTROINTESTINAL AND LIVER DISORDERS SPECIALISTS PLLC (NPI 1881996197) is a healthcare organization registered as a gastroenterology in Southfield, Michigan and active in the NPI registry since November 2010. The organization lists Firdous Anjum Siddiqui, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Gastrointestinal And Liver Disorders Specialists Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by January 31, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Gastrointestinal And Liver Disorders Specialists PLLC, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 Gastrointestinal And Liver Disorders Specialists PLLC's NPI number?
The NPI number for Gastrointestinal And Liver Disorders Specialists PLLC is 1881996197. It was assigned to this organization in the NPPES registry on November 19, 2010.
Where is Gastrointestinal And Liver Disorders Specialists PLLC located?
Gastrointestinal And Liver Disorders Specialists PLLC is located at 27200 Lahser Rd Suite 100, Southfield, MI 48034. The listed phone number is (248) 208-9257.
What is Gastrointestinal And Liver Disorders Specialists PLLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Gastrointestinal And Liver Disorders Specialists PLLC enrolled in Medicare?
Yes. Gastrointestinal And Liver Disorders Specialists PLLC is registered in the Medicare PECOS enrollment system.
When is Gastrointestinal And Liver Disorders Specialists PLLC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Michigan, Clinic/Group Practice) is due for revalidation by January 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Gastrointestinal And Liver Disorders Specialists PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Gastroenterology) reassigns their Medicare billing to Gastrointestinal And Liver Disorders Specialists PLLC. 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.
What insurance does Gastrointestinal And Liver Disorders Specialists PLLC accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company list Gastrointestinal And Liver Disorders Specialists PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Gastrointestinal And Liver Disorders Specialists PLLC was last updated on February 8, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Gastrointestinal And Liver Disorders Specialists Pllc · NPI 1881996197
Gastroenterology organization in Southfield, Michigan. Organization record, active in the CMS NPPES registry since November 19, 2010.
## Identity
- **NPI:** 1881996197 (Entity type: Organization)
- **Enumerated:** November 19, 2010
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **Organization subpart:** No
- **Authorized official:** Firdous Siddiqui, PRESIDENT
## Practice location
- **Address:** 27200 LAHSER RD, SUITE 100, Southfield, MI 48034-2137
- **Phone:** (248) 208-9257 · **Fax:** (248) 208-9217
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** January 31, 2027 (Non-DME Part B, Michigan, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1 clinician (Gastroenterology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 8, 2012
- **Other identifiers:** Medicare UPIN G93761
---
Source: [NPI Profile](https://npiprofile.com/npi/1881996197) · Data from the CMS NPPES public registry.