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MARSHAK MEDICAL GROUP,LLC
NPI 1346561933
Internal Medicine in Rockville, MD

Active since June 17, 2010CLIA 21D2006850 · Waiver
9900 BELWARD CAMPUS DR, SUITE 325, ROCKVILLE, MD 20850(301) 917-2185(301) 917-2191 Get Directions Write a Review

NPPES record last updated: June 17, 2010. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Marshak Medical Group,llc NPPES

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

MARSHAK MEDICAL GROUP,LLC (NPI 1346561933) is a healthcare organization registered as an internal medicine in Rockville, Maryland and active in the NPI registry since June 2010. The organization holds a CLIA Waiver certificate valid through April 29, 2028 and lists Steven P. Marshak, Managing Member, as its authorized official.

NPPES Registry Identity

NPI1346561933
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMARSHAK MEDICAL GROUP,LLC
Location Address9900 BELWARD CAMPUS DR, SUITE 325Rockville, MD 20850-3969
Mailing Address9900 Belward Campus Dr, Suite 325Rockville, MD 20850-3969 · (301) 917-2185 · Fax (301) 917-2191
Phone(301) 917-2185
Fax(301) 917-2191
Organization SubpartNo
Authorized OfficialSteven P. MarshakManaging Member · (301) 917-2185
Enumeration DateJune 17, 2010
✔ NPI 1346561933 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 · D0068171
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.
9900 BELWARD CAMPUS DR, Rockville, MD 20850
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Other Identifiers 1

Medicare UPING84855MD

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

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 21D2006850

Marshak Medical Group, LLC · Rockville, MD
Active · expires Apr 29, 2028
CLIA Number21D2006850
Laboratory TypePhysician Office
Certificate Effective DateApril 30, 2026
Certificate Expiration DateApril 29, 2028
Laboratory DirectorSteven P. Marshak
Laboratory Phone(301) 917-2185
Laboratory LocationMarshak Medical Group, LLC15200 Shady Grove Road #320, Rockville, MD 20850
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 2

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

NUTRICIA NORTH AMERICA
Durable Medical Equipment & Medical Supplies
9900 BELWARD CAMPUS DR
ROCKVILLE, MD 20850
Montgomery County (301) 795-2300
LABORATORY CORPORATION OF AMERICA
Clinical Medical Laboratory
9900 BELWARD CAMPUS DR, STE 350
ROCKVILLE, MD 20850
Montgomery County (301) 424-2077

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 Marshak Medical Group,llc's NPI number?

The NPI number for Marshak Medical Group,llc is 1346561933. It was assigned to this organization in the NPPES registry on June 17, 2010.

Where is Marshak Medical Group,llc located?

Marshak Medical Group,llc is located at 9900 Belward Campus Dr Suite 325, Rockville, MD 20850. The listed phone number is (301) 917-2185.

What is Marshak Medical Group,llc's specialty?

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

Does Marshak Medical Group,llc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 21D2006850) is associated with this NPI, valid through April 29, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Marshak Medical Group,llc was last updated on June 17, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.