GASTROINTESTINAL SPECIALISTS FOUNDATION, INC
NPI 1942546452
Internal Medicine - Gastroenterology in Memphis, TN

Q: What is Gastrointestinal Specialists Foundation, Inc's specialty?

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

Active since January 02, 2013

80 HUMPHREYS CENTER DR STE 200, MEMPHIS, TN 38120(901) 578-2538(901) 578-2572 Get Directions Write a Review

NPPES record last updated: December 16, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 16, 2019, Nov 22, 2019 (2 updates tracked since 2019).

On this page

About Gastrointestinal Specialists Foundation, Inc NPPES

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

GASTROINTESTINAL SPECIALISTS FOUNDATION, INC (NPI 1942546452) is a healthcare organization registered as a gastroenterology in Memphis, Tennessee and active in the NPI registry since January 2013. The organization lists Gregory M Duckett, Sr Vp/clo, as its authorized official.

NPPES Registry Identity

NPI1942546452

Entity TypeOrganization

Primary Taxonomy207RG0100X

Legal Business NameGASTROINTESTINAL SPECIALISTS FOUNDATION, INC

Location Address80 HUMPHREYS CENTER DR STE 200Memphis, TN 38120-2352

Mailing AddressPo Box 405827Atlanta, GA 30384-5800 · (901) 578-2538 · Fax (901) 578-2572

Phone(901) 578-2538

Fax(901) 578-2572

Organization SubpartNo

Authorized OfficialGregory M DuckettSr Vp/clo · (901) 227-5233

Enumeration DateJanuary 2, 2013

Last NPPES UpdateDecember 16, 20192 updates tracked since enumeration

✔ NPI 1942546452 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ 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.

Also ListedPathology · Anatomic Pathology & Clinical PathologyTaxonomy 207ZP0102X

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X

Also ListedNurse Anesthetist, Certified RegisteredTaxonomy 367500000X

80 HUMPHREYS CENTER DR STE 200, Memphis, TN 38120

Open in Google Maps ↗

Other Identifiers 2

Medicaid201055002AR

Medicaid201063002AR

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter Health, Ambetter of Alabama and more.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 Specialists Foundation, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 21 clinicians reassign Medicare billing to Gastrointestinal Specialists Foundation, Inc, which bills Medicare for the services they deliver. Of these, 13 practice at this address and 19 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 4

Nurse Practitioner9

Gastroenterology7

Certified Registered Nurse Anesthetist (CRNA)4

Pathology1

Nearest to this location (20)

See all 21

Abdullah Al-Rashdan, M.D.

Gastroenterology

NPI 1588831721

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ PECOS✔ Accepts MedicareSame address

William Flowers, CRNA

Certified Registered Nurse Anesthetist (CRNA)

NPI 1134233729

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ Accepts MedicareSame address

Ballina Griffy, NP-C

Nurse Practitioner

NPI 1558871814

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ PECOS✔ Accepts MedicareSame address

Gaurav Kistangari, M.D

Gastroenterology

NPI 1538334800

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ PECOS✔ Accepts MedicareSame address

Britney Mcmullen, NP

Nurse Practitioner

NPI 1063175693

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ PECOSSame address

Portia Payne

Nurse Practitioner

NPI 1578252276

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ PECOS✔ Accepts MedicareSame address

Angela Reardon, NP

Nurse Practitioner

NPI 1457831794

80 HUMPHREYS CENTER DR STE 200
Memphis, TN 38120

(901) 761-3900

✔ PECOS✔ Accepts MedicareSame address

Nicholas Reeves, NP

Nurse Practitioner

NPI 1639816648

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ PECOS✔ Accepts MedicareSame address

Monica Richardson, NP

Nurse Practitioner

NPI 1023835626

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ PECOS✔ Accepts MedicareSame address

Lakina Richmond

Nurse Practitioner

NPI 1871033472

80 HUMPHREYS CENTER DR SUITE 200
Memphis, TN 38120

(901) 578-2538

✔ PECOSSame address

Michael Sims, CRNA

Certified Registered Nurse Anesthetist (CRNA)

NPI 1831411396

80 HUMPHREYS CENTER DR STE 200
Memphis, TN 38120

(901) 578-2538

✔ Accepts MedicareSame address

Randelon Smith, MD

Gastroenterology

NPI 1790999753

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ PECOS✔ Accepts MedicareSame address

Andre Thompson, MD

Pathology

NPI 1538383765

80 HUMPHREYS CENTER DR STE 200
Memphis, TN 38120

(901) 578-2538

✔ PECOS✔ Accepts MedicareSame address

Linda Taylor, NP

Nurse Practitioner

NPI 1174071633

80 HUMPHREYS CENTER DR STE 210
Memphis, TN 38120

(901) 761-3900

✔ PECOS✔ Accepts Medicare0.1 mi

Joseph Feltman, CRNA

Certified Registered Nurse Anesthetist (CRNA)

NPI 1558528174

80 HUMPHREYS CENTER SUITE 200
Memphis, TN 38120

(573) 686-5550

✔ Accepts Medicare0.1 mi

Kenneth Fields, MD

Gastroenterology

NPI 1285659383

80 HUMPHREYS CENTER SUITE 200
Memphis, TN 38120

(901) 578-2538

✔ PECOS✔ Accepts Medicare0.1 mi

Edward Friedman, MD

Gastroenterology

NPI 1659558260

80 HUMPHREYS CENTER SUITE 200
Memphis, TN 38120

(901) 578-2538

✔ PECOS✔ Accepts Medicare0.1 mi

Walter Stuart, CRNA

Certified Registered Nurse Anesthetist (CRNA)

NPI 1578794483

6005 PARK AVE SUITE 406
Memphis, TN 38119

(901) 682-6828

✔ PECOS✔ Accepts Medicare2.1 mi

Charlotte Knight, APRN

Nurse Practitioner

NPI 1427521053

9067 POPLAR AVE STE 109
Germantown, TN 38138

(901) 522-6745

✔ PECOS✔ Accepts Medicare6.8 mi

Nieka Harris, M.D.

Gastroenterology

NPI 1396825618

363 SOUTHCREST CIR STE 302
Southaven, MS 38671

(901) 226-4003

✔ PECOS✔ Accepts Medicare14 mi

See all 21 clinicians

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 Specialists Foundation, Inc's NPI number?

The NPI number for Gastrointestinal Specialists Foundation, Inc is 1942546452. It was assigned to this organization in the NPPES registry on January 2, 2013.

Where is Gastrointestinal Specialists Foundation, Inc located?

Gastrointestinal Specialists Foundation, Inc is located at 80 Humphreys Center Dr Ste 200, Memphis, TN 38120. The listed phone number is (901) 578-2538.

What is Gastrointestinal Specialists Foundation, Inc's specialty?

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

Is Gastrointestinal Specialists Foundation, Inc enrolled in Medicare?

Yes. Gastrointestinal Specialists Foundation, Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gastrointestinal Specialists Foundation, Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 21 clinicians in 4 Medicare specialties reassign their Medicare billing to Gastrointestinal Specialists Foundation, Inc. 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 Nurse Practitioner (9), Gastroenterology (7) and Certified Registered Nurse Anesthetist (CRNA) (4). Of these, 13 practice at this address and 19 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Gastrointestinal Specialists Foundation, Inc accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 1 other insurer list Gastrointestinal Specialists Foundation, Inc 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 Specialists Foundation, Inc was last updated on December 16, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.