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AGA, LLC
NPI 1124064118
Internal Medicine - Gastroenterology in Atlanta, GA

Active since June 20, 2006CLIA Certified · 5 labs
550 PEACHTREE ST NE STE 1600, ATLANTA, GA 30308(404) 881-1094(404) 253-6896 Get Directions Write a Review

NPPES record last updated: June 9, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 5, 2022, Aug 22, 2020 (2 updates tracked since 2020).

About Aga, Llc NPPES

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

AGA, LLC (NPI 1124064118), doing business as Atlanta Gastroenterology Associates, is a healthcare organization registered as a gastroenterology in Atlanta, Georgia and active in the NPI registry since June 2006. The organization holds 5 active CLIA laboratory certificates and lists Jung Whun Suh, Chief Medical Officer, as its authorized official.

NPPES Registry Identity

NPI1124064118
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameAGA, LLC
Location Address550 PEACHTREE ST NE STE 1600Atlanta, GA 30308-2246
Mailing Address10 Glenlake Pkwy Ste 900Sandy Springs, GA 30328-7249 · (404) 888-7575 · Fax (404) 253-6896
Phone(404) 881-1094
Fax(404) 253-6896
Organization SubpartNo
Authorized OfficialJung Whun SuhChief Medical Officer · (404) 881-1094
Enumeration DateJune 20, 2006
Last NPPES UpdateJune 9, 20262 updates tracked since enumeration
NPPES CertifiedJune 9, 2026
✔ NPI 1124064118 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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 ListedInternal Medicine · HepatologyTaxonomy 207RI0008X
550 PEACHTREE ST NE STE 1600, Atlanta, GA 30308
Open in Google Maps ↗

Other Names 1

Doing Business AsAtlanta Gastroenterology Associates

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 Alliant Health Plans, Inc., Ambetter from Absolute Total Care, Ambetter Health 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)

Aga, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

186

Medicare enrollment records show 186 clinicians reassign Medicare billing to Aga, LLC, which bills Medicare for the services they deliver. Of these, 9 practice at this address and 45 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 6

Gastroenterology113
Nurse Practitioner38
Internal Medicine20
Pathology11
Pediatric Medicine2
Registered Dietitian or Nutrition Professional2

Nearest to this location (20)

See all 186
Enrique Martinez, MD
Gastroenterology
NPI 1245292218
550 PEACHTREE ST NE SUITE 1620
Atlanta, GA 30308
(404) 885-7701
✔ PECOS✔ Accepts MedicareSame address
Lori Woodward, RD, MS, LD
Registered Dietitian or Nutrition Professional
NPI 1326336330
550 PEACHTREE ST NE SUITE 1600
Atlanta, GA 30308
(404) 881-1094
✔ Accepts MedicareSame address
Kavita Kongara, M.D.
Gastroenterology
NPI 1952370959
550 PEACHTREE ST NE SUITE 1600
Atlanta, GA 30308
(404) 881-1094
✔ PECOS✔ Accepts MedicareSame address
Steven Morris, MD
Gastroenterology
NPI 1538143847
550 PEACHTREE ST NE SUITE 1600
Atlanta, GA 30308
(404) 881-1094
✔ PECOSSame address
Neal Patel, MD
Internal Medicine
NPI 1689838575
550 PEACHTREE ST NE SUITE 1600
Atlanta, GA 30308
(404) 881-1094
✔ PECOS✔ Accepts MedicareSame address
Marc Rosenberg, MD
Gastroenterology
NPI 1427033083
550 PEACHTREE ST NE SUITE 1600
Atlanta, GA 30308
(404) 881-1094
✔ PECOS✔ Accepts MedicareSame address
Michael Frist, MD
Gastroenterology
NPI 1811164361
550 PEACHTREE ST NE SUITE 1600
Atlanta, GA 30308
(404) 881-1094
✔ PECOS✔ Accepts MedicareSame address
Amanda Guentner, MD
Gastroenterology
NPI 1346533213
550 PEACHTREE ST NE STE 160
Atlanta, GA 30308
(404) 881-1094
✔ PECOS✔ Accepts MedicareSame address
Jung Suh, MD, MPH
Gastroenterology
NPI 1952512105
550 PEACHTREE ST NE SUITE 1600
Atlanta, GA 30308
(404) 881-1094
✔ PECOS✔ Accepts MedicareSame address
Mahmoud Barrie, MD
Gastroenterology
NPI 1144250770
340 BOULEVARD NE SUITE 145
Atlanta, GA 30312
(404) 584-7306
✔ PECOS✔ Accepts Medicare0.9 mi
Neal Dharmadhikari, MD
Gastroenterology
NPI 1528597689
1800 HOWELL MILL RD NW STE 600
Atlanta, GA 30318
(404) 351-9512
✔ PECOS✔ Accepts Medicare3.0 mi
David Quinn, M.D.
Gastroenterology
NPI 1538187240
1800 HOWELL MILL RD NW STE 600
Atlanta, GA 30318
(404) 351-9512
✔ PECOS✔ Accepts Medicare3.0 mi
Sonia Kashyap, FNP-C
Nurse Practitioner
NPI 1407712649
1800 HOWELL MILL RD NW STE 600
Atlanta, GA 30318
(404) 351-9512
✔ PECOS✔ Accepts Medicare3.0 mi
Ngozi Okoro, M.D
Gastroenterology
NPI 1730367756
1800 HOWELL MILL RD NW SUITE 600
Atlanta, GA 30318
(404) 351-9512
✔ PECOS✔ Accepts Medicare3.0 mi
Anupama Ravi, M.D
Gastroenterology
NPI 1659557668
615 MICHAEL ST NE SUITE 201
Atlanta, GA 30322
(404) 712-5596
✔ PECOS✔ Accepts Medicare4.1 mi
Muhamad Obideen, M.D
Gastroenterology
NPI 1326081647
1670 CLAIRMONT RD ATLANTA VA MEDICAL CENTER
Decatur, GA 30033
(404) 321-6111
✔ PECOS✔ Accepts Medicare4.8 mi
Kathryn Koenig, FNP
Nurse Practitioner
NPI 1639767833
12 EXECUTIVE PARK DR NE
Atlanta, GA 30329
(404) 712-7533
✔ PECOS✔ Accepts Medicare4.8 mi
Tommie Haywood, MD
Gastroenterology
NPI 1811979339
2665 N DECATUR RD SUITE 350
Decatur, GA 30033
(678) 553-0226
✔ PECOS✔ Accepts Medicare6.0 mi
Asiya Shakir, M.D.
Pediatric Medicine
NPI 1457790388
5445 MERIDIAN MARKS RD STE 490
Atlanta, GA 30342
(404) 843-6320
✔ PECOS9.5 mi
David Cohen, M.D.
Pathology
NPI 1114361573
1000 JOHNSON FY RD NE
Atlanta, GA 30342
(770) 458-6103
✔ PECOS✔ Accepts Medicare9.7 mi
See all 186 clinicians

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 10

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 11D0710194

Aga, LLC · Atlanta, GA
Active · expires Mar 19, 2027
CLIA Number11D0710194
Laboratory TypePhysician Office
Certificate Effective DateMarch 20, 2025
Certificate Expiration DateMarch 19, 2027
Laboratory DirectorCharles A. Fox
Laboratory Phone(404) 881-1094
Laboratory LocationAga, LLC550 Peachtree Street NE, Suite 1600, Atlanta, GA 30308
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 11D0867996

Aga, LLC Dba Atlanta Gastroenterology Associates · Stockbridge, GA
Active · expires Aug 31, 2028
CLIA Number11D0867996
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2026
Certificate Expiration DateAugust 31, 2028
Laboratory DirectorHitesh Chokshi
Laboratory Phone(404) 888-7575
Laboratory LocationAga, LLC Dba Atlanta Gastroenterology Associates150 North Park Trail, Suite B, Stockbridge, GA 30281
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 11D2160010

Aga, LLC Dba Atlanta Gastroenterology Associates · Atlanta, GA
Active · expires Jan 2, 2027
CLIA Number11D2160010
Laboratory TypePhysician Office
Certificate Effective DateJanuary 3, 2025
Certificate Expiration DateJanuary 2, 2027
Laboratory DirectorMichael Frist
Laboratory Phone(404) 888-7575
Laboratory LocationAga, LLC Dba Atlanta Gastroenterology Associates1110 West Peachtree Street, NW, Suite 840, Atlanta, GA 30309
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 11D1074167

Aga LLC · Atlanta, GA
Active · expires Sep 24, 2027
CLIA Number11D1074167
Laboratory TypePhysician Office
Certificate Effective DateSeptember 25, 2025
Certificate Expiration DateSeptember 24, 2027
Laboratory DirectorNicole Gordon
Laboratory Phone(404) 881-1094
Laboratory LocationAga LLC3886 Princeton Lakes Way Suite 240, Atlanta, GA 30331
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 11D2029443

Aga, LLC Dba East Atl Gastroenterology Assoc · Conyers, GA
Active · expires Sep 7, 2027
CLIA Number11D2029443
Laboratory TypePhysician Office
Certificate Effective DateSeptember 8, 2025
Certificate Expiration DateSeptember 7, 2027
Laboratory DirectorAbraham S. Mcintosh
Laboratory Phone(404) 888-7575
Laboratory LocationAga, LLC Dba East Atl Gastroenterology Assoc1501 Millstead Road, Suite 120, Conyers, GA 30012
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 11D1032107

Aga, LLC Dba Atlanta Gastroenterology Associates · Marietta, GA
Expired · Oct 17, 2026
CLIA Number11D1032107
Laboratory TypePhysician Office
Certificate Effective DateOctober 18, 2024
Certificate Expiration DateOctober 17, 2026
Laboratory DirectorMichael S. Levine
Laboratory Phone(404) 888-7575
Laboratory LocationAga, LLC Dba Atlanta Gastroenterology Associates2520 Windy Hill Road, Suite 102, Marietta, GA 30067
CLIA data matches this NPI record on: Name 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 Aga, LLC's NPI number?

The NPI number for Aga, LLC is 1124064118. It was assigned to this organization in the NPPES registry on June 20, 2006. The provider is doing business as Atlanta Gastroenterology Associates.

Where is Aga, LLC located?

Aga, LLC is located at 550 Peachtree St NE Ste 1600, Atlanta, GA 30308. The listed phone number is (404) 881-1094.

What is Aga, LLC's specialty?

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

Is Aga, LLC enrolled in Medicare?

Yes. Aga, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Aga, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 186 clinicians in 6 Medicare specialties reassign their Medicare billing to Aga, 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. The largest specialties are Gastroenterology (113), Nurse Practitioner (38) and Internal Medicine (20). Of these, 9 practice at this address and 45 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Aga, LLC hold CLIA laboratory certificates?

Yes. 5 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

What insurance does Aga, LLC accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama and Ambetter of North Carolina and 1 other insurer list Aga, LLC 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 Aga, LLC was last updated on June 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.