Viviana Johnson
NPI 1922195734 · Blood Banking & Transfusion Medicine Physician · Bethesda, MD
Viviana Johnson is a Blood Banking & Transfusion Medicine Physician provider in Bethesda, MD (NPI 1922195734).
Provider details
- NPI number
- 1922195734
- Entity type
- Individual
- Primary specialty
- Blood Banking & Transfusion Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- MD035350 (DC)
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.
Mailing address
Registry dates
- Enumerated
- 2006-10-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is Viviana Johnson's NPI number?
- Viviana Johnson's National Provider Identifier (NPI) is 1922195734, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Viviana Johnson's specialty?
- Viviana Johnson is listed in the NPPES registry with a primary specialty of Blood Banking & Transfusion Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Viviana Johnson located?
- Viviana Johnson's practice location on file with NPPES is Nnmc 8901 Wisconsin Avenue, Bethesda, MD 20089.
- What is Viviana Johnson's phone number?
- The practice phone number listed in the NPPES registry for Viviana Johnson is (301) 319-4073.
- Is Viviana Johnson's NPI active?
- Yes — Viviana Johnson's NPI (1922195734) 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.