1. Home
  2. Directory
  3. Maryland
  4. Lanham
  5. Internal Medicine
  6. NPI Profile

AFFILIATED SPECIALISTS, LLC
NPI 1376091355
Internal Medicine - Gastroenterology in Lanham, MD

Active since September 19, 2016
9821 GREENBELT RD, SUITE 104, LANHAM, MD 20706(301) 823-8086 Get Directions Write a Review

NPPES record last updated: December 30, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 30, 2016, Sep 23, 2016 (2 updates tracked since 2016).

About Affiliated Specialists, Llc NPPES

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

AFFILIATED SPECIALISTS, LLC (NPI 1376091355) is a healthcare organization registered as a gastroenterology in Lanham, Maryland and active in the NPI registry since September 2016. The organization lists David Louis Siegel, Ceo, as its authorized official.

NPPES Registry Identity

NPI1376091355
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameAFFILIATED SPECIALISTS, LLC
Location Address9821 GREENBELT RD, SUITE 104Lanham, MD 20706-2265
Mailing Address9821 Greenbelt Rd, Suite 104Lanham, MD 20706-2265 · (301) 823-8086
Phone(301) 823-8086
Organization SubpartNo
Authorized OfficialDavid Louis SiegelCeo · (301) 823-8086
Enumeration DateSeptember 19, 2016
Last NPPES UpdateDecember 30, 20162 updates tracked since enumeration
✔ NPI 1376091355 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.
9821 GREENBELT RD, Lanham, MD 20706
Open in Google Maps ↗

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)

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

Clinicians Billing Medicare Through This Organization

7

Medicare enrollment records show 7 clinicians reassign Medicare billing to Affiliated Specialists, LLC, which bills Medicare for the services they deliver. Of these, 6 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (7)

Sushil Rattan, MD
Gastroenterology
NPI 1467427120
7305 HANOVER PKWY STE A
Greenbelt, MD 20770
(301) 982-7900
✔ PECOS✔ Accepts Medicare2.3 mi
Radman Mostaghim, M.D.
Gastroenterology
NPI 1720022023
7305 HANOVER PKWY SUITE A
Greenbelt, MD 20770
(301) 982-7900
✔ PECOS✔ Accepts Medicare2.3 mi
Mushtaq Shah, M.D.
Gastroenterology
NPI 1043396633
7227 HANOVER PKWY STE A
Greenbelt, MD 20770
(301) 220-0606
✔ PECOS✔ Accepts Medicare2.3 mi
Ghulam Mohi Ud Din, M.D.
Gastroenterology
NPI 1821142514
6510 KENILWORTH AVE SUITE 2600
Riverdale, MD 20737
(301) 277-6565
✔ PECOS4.8 mi
Ritu Sachdev, M.D.
Gastroenterology
NPI 1851568224
14999 HEALTH CENTER DR SUITE 201
Bowie, MD 20716
(301) 262-8188
✔ PECOS✔ Accepts Medicare5.5 mi
David Siegel, M.D.
Gastroenterology
NPI 1104820182
14999 HEALTH CENTER DR STE 201
Bowie, MD 20716
(301) 262-8188
✔ PECOS5.5 mi
Louis Turano, MD
Anesthesiology
NPI 1407834815
7501 SURRATTS RD STE 208B
Clinton, MD 20735
(301) 877-1570
✔ PECOS17 mi

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

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 21D2271090

Affiliated Specialists LLC · Lanham, MD
Expired · Oct 26, 2026
CLIA Number21D2271090
Laboratory TypePhysician Office
Certificate Effective DateOctober 27, 2024
Certificate Expiration DateOctober 26, 2026
Laboratory DirectorRadman Mostaghim
Laboratory Phone(240) 413-5792
Laboratory LocationAffiliated Specialists LLC9811 Greenbelt Rd Suite 205, Lanham, MD 20706
CLIA data matches this NPI record on: Name
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 Affiliated Specialists, LLC's NPI number?

The NPI number for Affiliated Specialists, LLC is 1376091355. It was assigned to this organization in the NPPES registry on September 19, 2016.

Where is Affiliated Specialists, LLC located?

Affiliated Specialists, LLC is located at 9821 Greenbelt Rd Suite 104, Lanham, MD 20706. The listed phone number is (301) 823-8086.

What is Affiliated Specialists, LLC's specialty?

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

Is Affiliated Specialists, LLC enrolled in Medicare?

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

How many clinicians bill Medicare through Affiliated Specialists, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 2 Medicare specialties reassign their Medicare billing to Affiliated Specialists, 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 (6) and Anesthesiology (1). Of these, 6 practice 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 Affiliated Specialists, LLC was last updated on December 30, 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.