DAVID R. BROWN, MD, PHD, PA
NPI 1104944305
Internal Medicine - Endocrinology, Diabetes & Metabolism in Rockville, MD

Q: What is David R. Brown, MD, Phd, PA's NPI number?

The NPI number for David R. Brown, MD, Phd, PA is 1104944305. It was assigned to this organization in the NPPES registry on March 26, 2007.

Q: What is David R. Brown, MD, Phd, PA's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Active since March 26, 2007CLIA 21D0960028 · Waiver

2401 RESEARCH BLVD, SUITE 230, ROCKVILLE, MD 20850(301) 977-9272(301) 977-9172 Get Directions Write a Review

NPPES record last updated: November 13, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About David R. Brown, Md, Phd, Pa NPPES

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

DAVID R. BROWN, MD, PHD, PA (NPI 1104944305) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Rockville, Maryland and active in the NPI registry since March 2007. The organization holds a CLIA Waiver certificate valid through April 26, 2027 and lists Christina John Brown, Vice President, as its authorized official.

NPPES Registry Identity

NPI1104944305

Entity TypeOrganization

Primary Taxonomy207RE0101X

Legal Business NameDAVID R. BROWN, MD, PHD, PA

Location Address2401 RESEARCH BLVD, SUITE 230Rockville, MD 20850-3215

Mailing Address2401 Research Blvd, Suite 230Rockville, MD 20850-3215 · (301) 977-9272 · Fax (301) 977-9172

Phone(301) 977-9272

Fax(301) 977-9172

Organization SubpartNo

Authorized OfficialChristina John BrownVice President · (301) 977-9272

Enumeration DateMarch 26, 2007

Last NPPES UpdateNovember 13, 2009

✔ NPI 1104944305 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

License✔ Licensed in MD · D0036784

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

2401 RESEARCH BLVD, Rockville, MD 20850

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Other Identifiers 1

Medicare UPINE38366MD

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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 21D0960028

David R Brown MD Phd PA · Rockville, MD

Active · expires Apr 26, 2027

CLIA Number21D0960028

Laboratory TypePhysician Office

Certificate Effective DateApril 27, 2025

Certificate Expiration DateApril 26, 2027

Laboratory DirectorDavid R. Brown MD

Laboratory Phone(301) 977-9272

Laboratory LocationDavid R Brown MD Phd PA2401 Research Blvd Ste 230, Rockville, MD 20850

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

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.

STACY B STRYER M.D.

Pediatrics

2401 RESEARCH BLVD, SUITE 370
ROCKVILLE, MD 20850

Montgomery County (301) 990-1664

MS. DOROTHY DOYLE LCMFT

Marriage & Family Therapist

2401 RESEARCH BLVD, SUITE 115
ROCKVILLE, MD 20850

Montgomery County (301) 801-9356

TRISTAN SANDERS PTA

Physical Therapy Assistant

2401 RESEARCH BLVD, SUITE 109
ROCKVILLE, MD 20850

Montgomery County (301) 337-6921

JASWINDER SIDHU LLC

Internal Medicine (Nephrology)

2401 RESEARCH BLVD, SUITE#350
ROCKVILLE, MD 20850

Montgomery County (301) 983-2529

DR. DAVID ROBERT BROWN MD, PHD

Internal Medicine (Endocrinology, Diabetes & Metabolism)

2401 RESEARCH BLVD, 230
ROCKVILLE, MD 20850

Montgomery County (301) 977-9272

CAITLIN STINE M.S CCC-SLP

Speech-Language Pathologist

2401 RESEARCH BLVD, SUITE 109
ROCKVILLE, MD 20850

Montgomery County (301) 657-5650

NICO JIMMERSON

Physical Therapist

2401 RESEARCH BLVD
ROCKVILLE, MD 20850

Montgomery County (301) 337-6921

VIKRAMADITYA REDDY MD

Internal Medicine (Pulmonary Disease)

2401 RESEARCH BLVD, SUITE 350
ROCKVILLE, MD 20850

Montgomery County (301) 330-6982

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 David R. Brown, MD, Phd, PA's NPI number?

The NPI number for David R. Brown, MD, Phd, PA is 1104944305. It was assigned to this organization in the NPPES registry on March 26, 2007.

Where is David R. Brown, MD, Phd, PA located?

David R. Brown, MD, Phd, PA is located at 2401 Research Blvd Suite 230, Rockville, MD 20850. The listed phone number is (301) 977-9272.

What is David R. Brown, MD, Phd, PA's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Does David R. Brown, MD, Phd, PA hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 21D0960028) is associated with this NPI, valid through April 26, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for David R. Brown, MD, Phd, PA was last updated on November 13, 2009. 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.