James Brown, M.D.
NPI 1689755431 · Hematology & Oncology Physician · Rockville, MD
James Brown, M.D. is a Hematology & Oncology Physician provider in Rockville, MD (NPI 1689755431).
Provider details
- NPI number
- 1689755431
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- D007285 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-18
- Last updated
- 2007-07-08
Frequently asked questions
- What is James Brown's NPI number?
- James Brown's National Provider Identifier (NPI) is 1689755431, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Brown's specialty?
- James Brown is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is James Brown located?
- James Brown's practice location on file with NPPES is 9707 Medical Center Dr, Rockville, MD 20850-3348.
- What is James Brown's phone number?
- The practice phone number listed in the NPPES registry for James Brown is (301) 424-6231.
- Is James Brown's NPI active?
- Yes — James Brown's NPI (1689755431) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.