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Harold Johnson, M.D.
NPI 1831314350 · Specialist · Washington, DC
Harold Johnson, M.D. is a Specialist provider in Washington, DC (NPI 1831314350).
Provider details
- NPI number
- 1831314350
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MD7218 (DC)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(89/100 index)
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
3794 Martin Luther King Jr Ave Se
Suite 100
Washington, DC 20032-1580
Phone: (301) 773-3366
Street-level locationGet directions
Mailing address
43 W St Nw
Washington, DC 20001-1068
Registry dates
- Enumerated
- 2007-04-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Harold Johnson's NPI number?
- Harold Johnson's National Provider Identifier (NPI) is 1831314350, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harold Johnson's specialty?
- Harold Johnson is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Harold Johnson located?
- Harold Johnson's practice location on file with NPPES is 3794 Martin Luther King Jr Ave Se, Washington, DC 20032-1580.
- What is Harold Johnson's phone number?
- The practice phone number listed in the NPPES registry for Harold Johnson is (301) 773-3366.
- Is Harold Johnson's NPI active?
- Yes — Harold Johnson's NPI (1831314350) 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.