Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

PIOTR L GROJEC M.D.
NPI 1639124696
Internal Medicine in District Heights, MD

Active since May 24, 2006
6400 MARLBORO PIKE, DISTRICT HEIGHTS, MD 20747(301) 736-7000(301) 736-6916 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Piotr L Grojec M.d. NPPES

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

PIOTR L GROJEC M.D. (NPI 1639124696) is an individual internal medicine provider in District Heights, Maryland, licensed in Maryland (D0046671) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1639124696
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NamePIOTR L GROJECCredential: M.D.
Location Address6400 MARLBORO PIKEDistrict Heights, MD 20747-2841
Mailing Address6400 Marlboro PikeDistrict Heights, MD 20747-2841 · (301) 736-7000 · Fax (301) 736-6916
Fax(301) 736-6916
Sole ProprietorNo
Enumeration DateMay 24, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1639124696 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in MD · D0046671
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
6400 MARLBORO PIKE, District Heights, MD 20747

Other Providers at the Same Location NPPES 9

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

Internal Medicine
6400 MARLBORO PIKE
DISTRICT HEIGHTS, MD 20747
Clinic/Center (Ambulatory Surgical)
6400 MARLBORO PIKE
DISTRICT HEIGHTS, MD 20747
Obstetrics & Gynecology
6400 MARLBORO PIKE, SUITE A
DISTRICT HEIGHTS, MD 20747
Family Medicine
6400 MARLBORO PIKE
DISTRICT HEIGHTS, MD 20747
Nurse Practitioner (Family)
6400 MARLBORO PIKE
DISTRICT HEIGHTS, MD 20747
Family Medicine
6400 MARLBORO PIKE, UPPER LEVEL
DISTRICT HEIGHTS, MD 20747
Family Medicine
6400 MARLBORO PIKE
DISTRICT HEIGHTS, MD 20747
Nurse Practitioner (Family)
6400 MARLBORO PIKE
DISTRICT HEIGHTS, MD 20747

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 Piotr Grojec's NPI number?

The NPI number for Piotr Grojec is 1639124696. It was assigned to this individual provider in the NPPES registry on May 24, 2006.

Where is Piotr Grojec located?

Piotr Grojec practices at 6400 Marlboro Pike, District Heights, MD 20747. The listed phone number is (301) 736-7000.

What is Piotr Grojec's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Piotr Grojec was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.