Marc Blackman, M.D.
NPI 1629281852 · Endocrinology, Diabetes & Metabolism Physician · Washington, DC
Marc Blackman, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Washington, DC (NPI 1629281852).
Provider details
- NPI number
- 1629281852
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D18146 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Hospitals
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
- 2007-05-07
- Last updated
- 2008-01-14
Frequently asked questions
- What is Marc Blackman's NPI number?
- Marc Blackman's National Provider Identifier (NPI) is 1629281852, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Blackman's specialty?
- Marc Blackman is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Blackman located?
- Marc Blackman's practice location on file with NPPES is 50 Irving St Nw, Washington, DC 20422-0001.
- What is Marc Blackman's phone number?
- The practice phone number listed in the NPPES registry for Marc Blackman is (202) 745-8478.
- Is Marc Blackman's NPI active?
- Yes — Marc Blackman's NPI (1629281852) is active in the NPPES registry as of the last update on 2008-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.