Mark Johnston, HID
NPI 1588055024 · Hearing Instrument Specialist · Rochester, MN
Mark Johnston, HID is a Hearing Instrument Specialist provider in Rochester, MN (NPI 1588055024).
Provider details
- NPI number
- 1588055024
- Entity type
- Individual
- Primary specialty
- Hearing Instrument SpecialistSpeech, Language and Hearing Service Providers
- Credential
- HID
- Sex
- Male
- Sole proprietor
- No
- License
- 2657 (MN)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2015-02-05
- Last updated
- 2015-02-05
Frequently asked questions
- What is Mark Johnston's NPI number?
- Mark Johnston's National Provider Identifier (NPI) is 1588055024, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Johnston's specialty?
- Mark Johnston is listed in the NPPES registry with a primary specialty of Hearing Instrument Specialist (Speech, Language and Hearing Service Providers).
- Where is Mark Johnston located?
- Mark Johnston's practice location on file with NPPES is 2700 N Broadway, Rochester, MN 55906-3980.
- What is Mark Johnston's phone number?
- The practice phone number listed in the NPPES registry for Mark Johnston is (507) 281-8989.
- Is Mark Johnston's NPI active?
- Yes — Mark Johnston's NPI (1588055024) is active in the NPPES registry as of the last update on 2015-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.