GASTROINTESTINAL ASSOCIATES OF MARYLAND PA
NPI 1164404125
Internal Medicine - Gastroenterology in Waldorf, MD

Q: What is Gastrointestinal Associates Of Maryland PA's specialty?

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

Active since November 16, 2005

3510 OLD WASHINGTON RD STE 201, WALDORF, MD 20602(301) 645-8035(301) 645-5229 Get Directions Write a Review

NPPES record last updated: July 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Gastrointestinal Associates Of Maryland Pa NPPES

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

GASTROINTESTINAL ASSOCIATES OF MARYLAND PA (NPI 1164404125), doing business as Gi Associates, is a healthcare organization registered as a gastroenterology in Waldorf, Maryland and active in the NPI registry since November 2005. The organization lists Alexis Addison, Practice Director, as its authorized official.

NPPES Registry Identity

NPI1164404125

Entity TypeOrganization

Primary Taxonomy207RG0100X

Legal Business NameGASTROINTESTINAL ASSOCIATES OF MARYLAND PA

Location Address3510 OLD WASHINGTON RD STE 201Waldorf, MD 20602-3235

Mailing Address3510 Old Washington Rd Ste 201Waldorf, MD 20602-3235 · (301) 645-8035 · Fax (301) 645-5229

Phone(301) 645-8035

Fax(301) 645-5229

Organization SubpartNo

Authorized OfficialAlexis AddisonPractice Director · (301) 645-8035

Enumeration DateNovember 16, 2005

Last NPPES UpdateJuly 29, 2026

NPPES CertifiedJuly 29, 2026

✔ NPI 1164404125 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.

3510 OLD WASHINGTON RD STE 201, Waldorf, MD 20602

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Other Names 1

Doing Business AsGi Associates

Other Identifiers 2

Medicaid035197200DC

Medicaid155700900MD

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)

Gastrointestinal Associates Of Maryland Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 11 clinicians reassign Medicare billing to Gastrointestinal Associates Of Maryland PA, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 4 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 4

Gastroenterology6

Pathology3

Anesthesiology1

Nurse Practitioner1

Clinicians, nearest first (11)

Sonna Woodhouse

Nurse Practitioner

NPI 1417820408

3510 OLD WASHINGTON RD STE 201
Waldorf, MD 20602

(301) 645-8035

✔ PECOS✔ Accepts MedicareSame address

Khadar Baig, MD

Gastroenterology

NPI 1497754550

12070 OLD LINE CTR STE 200
Waldorf, MD 20602

(301) 645-8035

✔ PECOS1.3 mi

Gowri Kularatna, M.D.

Gastroenterology

NPI 1861682957

12070 OLD LINE CTR SUITE 200
Waldorf, MD 20602

(301) 645-8035

✔ PECOS✔ Accepts Medicare1.3 mi

Lornette Mills, MD

Gastroenterology

NPI 1689673741

12070 OLD LINE CTR STE 200
Waldorf, MD 20602

(301) 645-8035

✔ PECOS✔ Accepts Medicare1.3 mi

Rufaat Mando

Gastroenterology

NPI 1205242591

6354 WALKER LN STE 400
Alexandria, VA 22310

(571) 472-7320

✔ PECOS✔ Accepts Medicare17 mi

Lindsay Warren, MD

Anesthesiology

NPI 1588771521

2000 15TH ST N STE 600
Arlington, VA 22201

(202) 425-0000

✔ PECOS✔ Accepts Medicare21 mi

Anandita Datta, M.D.

Pathology

NPI 1922030477

4801 TESLA DR STE H
Bowie, MD 20715

(301) 464-0603

✔ PECOS✔ Accepts Medicare26 mi

Michael Ballo, M.D.

Pathology

NPI 1780648550

700 GEIPE RD STE 230
Catonsville, MD 21228

(410) 247-7500

✔ PECOS✔ Accepts Medicare47 mi

Christine Lewis, M.D.

Gastroenterology

NPI 1659361723

11110 MEDICAL CAMPUS RD SUITE 246
Hagerstown, MD 21742

(301) 665-4585

✔ PECOS✔ Accepts Medicare81 mi

Khadijat Balogun, M.D

Gastroenterology

NPI 1124310743

353 MAIN ST
Manchester, CT 06040

(860) 649-3477

✔ PECOS✔ Accepts Medicare319 mi

Daniel Crump, M.D.

Pathology

NPI 1750374955

800 ROSE ST # MS 119
Lexington, KY 40536

(859) 257-1446

✔ PECOS✔ Accepts Medicare414 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 Gastrointestinal Associates Of Maryland PA's NPI number?

The NPI number for Gastrointestinal Associates Of Maryland PA is 1164404125. It was assigned to this organization in the NPPES registry on November 16, 2005. The provider is doing business as GI Associates.

Where is Gastrointestinal Associates Of Maryland PA located?

Gastrointestinal Associates Of Maryland PA is located at 3510 Old Washington Rd Ste 201, Waldorf, MD 20602. The listed phone number is (301) 645-8035.

What is Gastrointestinal Associates Of Maryland PA's specialty?

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

Is Gastrointestinal Associates Of Maryland PA enrolled in Medicare?

Yes. Gastrointestinal Associates Of Maryland PA is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gastrointestinal Associates Of Maryland PA?

According to the CMS Revalidation Reassignment List (October 2026 release), 11 clinicians in 4 Medicare specialties reassign their Medicare billing to Gastrointestinal Associates Of Maryland PA. 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 (6), Pathology (3) and Anesthesiology (1). Of these, 1 practice at this address and 4 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Gastrointestinal Associates Of Maryland PA was last updated on July 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.