IndividualActive
Marc Johnson
NPI 1942617147 · Audiologist · Baltimore, MD
Marc Johnson is a Audiologist provider in Baltimore, MD (NPI 1942617147).
Provider details
- NPI number
- 1942617147
- Entity type
- Individual
- Primary specialty
- AudiologistSpeech, Language and Hearing Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 01350 (MD)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
Detailed profile(75/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
601 N Caroline St Fl 6
Department of Otolaryngology- Head and Neck Surgery
Baltimore, MD 21287-0006
Phone: (410) 955-6153
Street-level locationGet directions
Mailing address
601 N Caroline St Fl 6
Baltimore, MD 21287-0006
Registry dates
- Enumerated
- 2014-07-20
- Last updated
- 2016-08-11
Frequently asked questions
- What is Marc Johnson's NPI number?
- Marc Johnson's National Provider Identifier (NPI) is 1942617147, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Johnson's specialty?
- Marc Johnson is listed in the NPPES registry with a primary specialty of Audiologist (Speech, Language and Hearing Service Providers).
- Where is Marc Johnson located?
- Marc Johnson's practice location on file with NPPES is 601 N Caroline St Fl 6, Baltimore, MD 21287-0006.
- What is Marc Johnson's phone number?
- The practice phone number listed in the NPPES registry for Marc Johnson is (410) 955-6153.
- Is Marc Johnson's NPI active?
- Yes — Marc Johnson's NPI (1942617147) is active in the NPPES registry as of the last update on 2016-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.