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

DR. PETER RITKA MD
NPI 1720156730
Internal Medicine - Gastroenterology in Largo, MD

Active since November 30, 2006
1221 MERCANTILE LANE, LARGO, MD 20774(301) 618-5578(301) 618-5673 Get Directions Write a Review

NPPES record last updated: November 4, 2011. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Peter Ritka Md NPPES

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

DR. PETER RITKA MD (NPI 1720156730) is an individual gastroenterology provider in Largo, Maryland, licensed in Maryland (D0037662) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1720156730
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. PETER RITKACredential: MD
Location Address1221 MERCANTILE LANELargo, MD 20774-5374
Mailing Address2101 East Jefferson Street Ppqa Medicare Compliance UntRockville, MD 20852-4908 · (301) 816-2424 · Fax (301) 816-8308
Phone(301) 618-5578
Fax(301) 618-5673
Sole ProprietorNo
Enumeration DateNovember 30, 2006
Last NPPES UpdateNovember 4, 2011
✔ NPI 1720156730 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in MD · D0037662
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.
1221 MERCANTILE LANE, Largo, MD 20774
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINA16737
Medicare ID-Type Unspecified699947M92

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. WILLIAM L KRANZER OD
Optometrist
1221 MERCANTILE LANE
LARGO, MD 20774
Prince George's County (301) 618-5578
DR. MARK HOWARD TERRIS MD
Otolaryngology
1221 MERCANTILE LANE
LARGO, MD 20774
Prince George's County (301) 618-5500
IDONGESIT IHEANYICHUKWU ATTANG M.D.
Family Medicine (Adult Medicine)
1221 MERCANTILE LANE
LARGO, MD 20774
Prince George's County (301) 618-5500
DR. JERRY WENDELL MCCONNELL M.D.
Internal Medicine
1221 MERCANTILE LANE
LARGO, MD 20774
Prince George's County (301) 618-5578
DR. SHIRLEY ANNE VANMILDER M.D.
Obstetrics & Gynecology
1221 MERCANTILE LANE
LARGO, MD 20774
Prince George's County (301) 618-5679
MS. VALERIE MAY STEVENS CRNP
Nurse Practitioner
1221 MERCANTILE LANE
LARGO, MD 20774
Prince George's County (301) 618-5578
MS. MICHELE BASSETT AUD
Audiologist
1221 MERCANTILE LANE
LANDOVER, MD 20774
Prince George's County (301) 618-5500
DR. ALEXIS GORDEN MCCARY M.D.
Internal Medicine (Gastroenterology)
1221 MERCANTILE LANE
UPPER MARLBORO, MD 20774
Prince George's County (301) 618-5500

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 Peter Ritka's NPI number?

The NPI number for Peter Ritka is 1720156730. It was assigned to this individual provider in the NPPES registry on November 30, 2006.

Where is Peter Ritka located?

Peter Ritka practices at 1221 Mercantile Lane, Largo, MD 20774. The listed phone number is (301) 618-5578.

What is Peter Ritka's specialty?

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

When was this NPI record last updated?

The NPPES record for Peter Ritka was last updated on November 4, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.