GASTROINTESTINAL ASSOCIATES, P.A.
NPI 1144412438
Internal Medicine - Gastroenterology in Vicksburg, MS
About Gastrointestinal Associates, P.a. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GASTROINTESTINAL ASSOCIATES, P.A. (NPI 1144412438) is a healthcare organization registered as a gastroenterology in Vicksburg, Mississippi and active in the NPI registry since August 2007. The organization lists Pierce D Dotherow, Authorized Official, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Gastrointestinal Associates, P.a. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
109Medicare enrollment records show 109 clinicians reassign Medicare billing to Gastrointestinal Associates, P.A., which bills Medicare for the services they deliver. Of these, 1 practice at this address. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 8
Nearest to this location (20)
See all 109Source: 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 Associates, P.A.'s NPI number?
The NPI number for Gastrointestinal Associates, P.A. is 1144412438. It was assigned to this organization in the NPPES registry on August 10, 2007.
Where is Gastrointestinal Associates, P.A. located?
Gastrointestinal Associates, P.A. is located at 1815 Mission 66, Vicksburg, MS 39180. The listed phone number is (601) 355-1234.
What is Gastrointestinal Associates, P.A.'s specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Gastrointestinal Associates, P.A. enrolled in Medicare?
Yes. Gastrointestinal Associates, P.A. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Gastrointestinal Associates, P.A.?
According to the CMS Revalidation Reassignment List (October 2026 release), 109 clinicians in 8 Medicare specialties reassign their Medicare billing to Gastrointestinal Associates, P.A.. 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. The largest specialties are Gastroenterology (37), Nurse Practitioner (33) and Certified Registered Nurse Anesthetist (CRNA) (32). Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Gastrointestinal Associates, P.A. accept?
Health plans from Cigna Healthcare and Molina Healthcare list Gastrointestinal Associates, P.A. 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 Associates, P.A. was last updated on December 6, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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 Associates, P.a. · NPI 1144412438
Gastroenterology organization in Vicksburg, Mississippi. Organization record, active in the CMS NPPES registry since August 10, 2007.
## Identity
- **NPI:** 1144412438 (Entity type: Organization)
- **Enumerated:** August 10, 2007
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **Organization subpart:** Yes (part of Gastrointestinal Associates, P.a.)
- **Authorized official:** Pierce Dotherow, AUTHORIZED OFFICIAL
## Practice location
- **Address:** 1815 MISSION 66, Vicksburg, MS 39180-3709
- **Phone:** (601) 355-1234 · **Fax:** (601) 326-3566
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 109 clinicians in 8 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Gastroenterology (37), Nurse Practitioner (33), Certified Registered Nurse Anesthetist (CRNA) (32); 1 practice at this address; [full list](https://npiprofile.com/npi/1144412438/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 6, 2016
- **Other identifiers:** Medicaid 09852713 (MS); Medicare PIN C00430 (MS); Medicare PIN CN0406 (MS)
---
Source: [NPI Profile](https://npiprofile.com/npi/1144412438) · Data from the CMS NPPES public registry.