Allison Johnson
NPI 1821840471 · Speech-Language Pathologist · Harrisburg, IL
Allison Johnson is a Speech-Language Pathologist provider in Harrisburg, IL (NPI 1821840471).
Provider details
- NPI number
- 1821840471
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 146015642 (IL)
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
2 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
- 2024-04-04
- Last updated
- 2024-04-04
- Certified
- 2024-04-04
Frequently asked questions
- What is Allison Johnson's NPI number?
- Allison Johnson's National Provider Identifier (NPI) is 1821840471, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allison Johnson's specialty?
- Allison Johnson is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Allison Johnson located?
- Allison Johnson's practice location on file with NPPES is 901 S Commercial St, Harrisburg, IL 62946-2640.
- What is Allison Johnson's phone number?
- The practice phone number listed in the NPPES registry for Allison Johnson is (618) 294-9326.
- Is Allison Johnson's NPI active?
- Yes — Allison Johnson's NPI (1821840471) is active in the NPPES registry as of the last update on 2024-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.