What is Gregory Brown's NPI number?

Gregory Brown's National Provider Identifier (NPI) is 1861826521, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gregory Brown's specialty?

Gregory Brown is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).

Where is Gregory Brown located?

Gregory Brown's practice location on file with NPPES is 41 Center Dr Rm A101h, Bethesda, MD 20892-0004.

What is Gregory Brown's phone number?

The practice phone number listed in the NPPES registry for Gregory Brown is (240) 858-7227.

Is Gregory Brown's NPI active?

Yes — Gregory Brown's NPI (1861826521) is active in the NPPES registry as of the last update on 2026-01-23.

IndividualActive

Gregory Brown, MD, PHD

NPI 1861826521 · Anatomic Pathology Physician · Bethesda, MD

Gregory Brown, MD, PHD is a Anatomic Pathology Physician provider in Bethesda, MD (NPI 1861826521).

Provider details

NPI number: 1861826521
Entity type: Individual
Primary specialty: Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
Credential: MD, PHD
Sex: Male
Sole proprietor: No
License: 105483 (GA)

Practice location

41 Center Dr Rm A101h

Bethesda, MD 20892-0004

Phone: (240) 858-7227

Street-level locationGet directions

More MD providers

Mailing address

41 Center Dr Bldg 41

Bethesda, MD 20892-0004

Specialties & taxonomies

Anatomic Pathology PhysicianPrimary207ZP0101XLicense 105483 (GA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(78/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
13 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2013-08-29
Last updated: 2026-01-23
Certified: 2026-01-23

Frequently asked questions

What is Gregory Brown's NPI number?: Gregory Brown's National Provider Identifier (NPI) is 1861826521, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Gregory Brown's specialty?: Gregory Brown is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
Where is Gregory Brown located?: Gregory Brown's practice location on file with NPPES is 41 Center Dr Rm A101h, Bethesda, MD 20892-0004.
What is Gregory Brown's phone number?: The practice phone number listed in the NPPES registry for Gregory Brown is (240) 858-7227.
Is Gregory Brown's NPI active?: Yes — Gregory Brown's NPI (1861826521) is active in the NPPES registry as of the last update on 2026-01-23.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions