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DIGESTIVE DISEASE ASSOCIATES, LLC
NPI 1407400955
Internal Medicine - Gastroenterology in Baltimore, MD

Active since August 01, 2019
700 GEIPE ROAD STE 230, BALTIMORE, MD 21228(410) 247-7500(410) 247-4227 Get Directions Write a Review

NPPES record last updated: May 16, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 16, 2025, Mar 30, 2021, Aug 1, 2019 (3 updates tracked since 2019).

About Digestive Disease Associates, Llc NPPES

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

DIGESTIVE DISEASE ASSOCIATES, LLC (NPI 1407400955) is a healthcare organization registered as a gastroenterology in Baltimore, Maryland and active in the NPI registry since August 2019. The organization maintains a secondary practice location in Columbia and lists Alan Oliver, Ceo, as its authorized official.

NPPES Registry Identity

NPI1407400955
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameDIGESTIVE DISEASE ASSOCIATES, LLC
Location Address700 GEIPE ROAD STE 230Baltimore, MD 21228-4176
Mailing Address700 Geipe Road Ste 201Baltimore, MD 21228-4176 · (410) 737-9741 · Fax (410) 737-6884
Phone(410) 247-7500
Fax(410) 247-4227
Organization SubpartNo
Authorized OfficialAlan OliverCeo · (745) 372-3055
Enumeration DateAugust 1, 2019
Last NPPES UpdateMay 16, 20253 updates tracked since enumeration
NPPES CertifiedMay 16, 2025
✔ NPI 1407400955 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 ListedAnesthesiologyTaxonomy 207L00000X
Also ListedInternal Medicine · Transplant HepatologyTaxonomy 207RT0003X
Also ListedPathology · Anatomic Pathology & Clinical PathologyTaxonomy 207ZP0102X
700 GEIPE ROAD STE 230, Baltimore, MD 21228
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Secondary Practice Location 1

Location 110710 CHARTER DR STE 110COLUMBIA, MD 21044-3258 · Phone (410) 992-9797 · Fax (410) 730-0942

Group Practice 2

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

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

Clinicians Billing Medicare Through This Organization

96

Medicare enrollment records show 96 clinicians reassign Medicare billing to Digestive Disease Associates, LLC, which bills Medicare for the services they deliver. Of these, 12 practice at this address and 48 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 5

Certified Registered Nurse Anesthetist (CRNA)65
Gastroenterology20
Nurse Practitioner6
Anesthesiology3
Pathology2

Nearest to this location (20)

See all 96
Thomas Abernathy, M.D.
Gastroenterology
NPI 1538105697
700 GEIPE RD SUITE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOS✔ Accepts MedicareSame address
Allen Banegura, M.D.
Gastroenterology
NPI 1780895854
700 GEIPE RD SUITE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOS✔ Accepts MedicareSame address
Natarajan Ravendhran, M.D.
Gastroenterology
NPI 1821071069
700 GEIPE RD STE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOSSame address
Neeraj Sardana, M.D.
Gastroenterology
NPI 1679783021
700 GEIPE RD SUITE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOS✔ Accepts MedicareSame address
Alana Harris, APN
Nurse Practitioner
NPI 1891026266
700 GEIPE RD STE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOS✔ Accepts MedicareSame address
Juan Lopez, MD
Anesthesiology
NPI 1356326474
700 GEIPE RD STE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOS✔ Accepts MedicareSame address
Stephen Meyerhuber, M.D.
Anesthesiology
NPI 1235227299
700 GEIPE RD STE 220
Catonsville, MD 21228
(410) 242-3636
✔ PECOS✔ Accepts MedicareSame address
Dolores Rotunda, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1427032721
700 GEIPE RD STE 230
Catonsville, MD 21228
(410) 247-7500
✔ Accepts MedicareSame address
Louis Salas, M.D.
Gastroenterology
NPI 1164420154
700 GEIPE RD SUITE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOS✔ Accepts MedicareSame address
Missale Solomon, M.D.
Gastroenterology
NPI 1245492693
700 GEIPE RD SUITE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOS✔ Accepts MedicareSame address
Ghita Moussaide, M.D.
Gastroenterology
NPI 1649535667
700 GEIPE RD STE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOS✔ Accepts MedicareSame address
Luis Tan, M.D.
Anesthesiology
NPI 1578560926
700 GEIPE RD STE 230
Catonsville, MD 21228
(410) 247-7500
✔ PECOS✔ Accepts MedicareSame address
Lauren Procaccini, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1124356985
900 CATON AVE
Baltimore, MD 21229
(410) 368-6000
4.6 mi
Christopher Kim, M.D.
Gastroenterology
NPI 1922006931
900 S CATON AVE
Baltimore, MD 21229
(667) 234-2200
✔ PECOS✔ Accepts Medicare4.6 mi
Shannon Hagan, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1295974343
5401 OLD COURT RD
Randallstown, MD 21133
(410) 701-4547
✔ Accepts Medicare5.5 mi
Nisha Kurian, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1891048088
5401 OLD COURT RD
Randallstown, MD 21133
(410) 521-2200
✔ Accepts Medicare5.5 mi
Nathalie Orr, AGACNP-BC
Nurse Practitioner
NPI 1417316357
22 S GREENE ST
Baltimore, MD 21201
(410) 328-4242
✔ PECOS✔ Accepts Medicare7.1 mi
Grishma Joy, M.D.
Gastroenterology
NPI 1336239656
10710 CHARTER DR STE 110
Columbia, MD 21044
(410) 992-9797
✔ PECOS✔ Accepts Medicare8.2 mi
Biju Alex, M.D.
Gastroenterology
NPI 1750558342
10710 CHARTER DR STE 110
Columbia, MD 21044
(410) 992-9797
✔ PECOS✔ Accepts Medicare8.2 mi
Tricia Carvalho, CRNP
Nurse Practitioner
NPI 1043533508
10710 CHARTER DR STE 110
Columbia, MD 21044
(410) 992-9797
✔ PECOS✔ Accepts Medicare8.2 mi
See all 96 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 Digestive Disease Associates, LLC's NPI number?

The NPI number for Digestive Disease Associates, LLC is 1407400955. It was assigned to this organization in the NPPES registry on August 1, 2019.

Where is Digestive Disease Associates, LLC located?

Digestive Disease Associates, LLC is located at 700 Geipe Road Ste 230, Baltimore, MD 21228. The listed phone number is (410) 247-7500.

What is Digestive Disease Associates, LLC's specialty?

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

Is Digestive Disease Associates, LLC enrolled in Medicare?

Yes. Digestive Disease Associates, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Digestive Disease Associates, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 96 clinicians in 5 Medicare specialties reassign their Medicare billing to Digestive Disease Associates, 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 Certified Registered Nurse Anesthetist (CRNA) (65), Gastroenterology (20) and Nurse Practitioner (6). Of these, 12 practice at this address and 48 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 Digestive Disease Associates, LLC was last updated on May 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.