Mallory Johnston, MHP
NPI 1972128544 · Mental Health Counselor · Mount Vernon, IL
Mallory Johnston, MHP is a Mental Health Counselor provider in Mount Vernon, IL (NPI 1972128544).
Provider details
- NPI number
- 1972128544
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MHP
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2020-06-10
- Last updated
- 2020-06-10
- Certified
- 2020-06-10
Frequently asked questions
- What is Mallory Johnston's NPI number?
- Mallory Johnston's National Provider Identifier (NPI) is 1972128544, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Johnston's specialty?
- Mallory Johnston is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Mallory Johnston located?
- Mallory Johnston's practice location on file with NPPES is 4110 N Water Tower Pl, Mount Vernon, IL 62864-6295.
- What is Mallory Johnston's phone number?
- The practice phone number listed in the NPPES registry for Mallory Johnston is (618) 214-2760.
- Is Mallory Johnston's NPI active?
- Yes — Mallory Johnston's NPI (1972128544) is active in the NPPES registry as of the last update on 2020-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.