IndividualActive
Mark Johnstone, MHPP
NPI 1891955076 · Counselor · Springdale, AR
Mark Johnstone, MHPP is a Counselor provider in Springdale, AR (NPI 1891955076).
Provider details
- NPI number
- 1891955076
- Entity type
- Individual
- Primary specialty
- CounselorBehavioral Health & Social Service Providers
- Credential
- MHPP
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(81/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
2400 S 48th St
Springdale, AR 72762-6683
Phone: (479) 750-2020
Fax: (479) 750-8967
Street-level locationGet directions
Mailing address
Po Box 6430
Springdale, AR 72766-6430
Registry dates
- Enumerated
- 2008-06-11
- Last updated
- 2008-06-11
Frequently asked questions
- What is Mark Johnstone's NPI number?
- Mark Johnstone's National Provider Identifier (NPI) is 1891955076, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Johnstone's specialty?
- Mark Johnstone is listed in the NPPES registry with a primary specialty of Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Johnstone located?
- Mark Johnstone's practice location on file with NPPES is 2400 S 48th St, Springdale, AR 72762-6683.
- What is Mark Johnstone's phone number?
- The practice phone number listed in the NPPES registry for Mark Johnstone is (479) 750-2020.
- Is Mark Johnstone's NPI active?
- Yes — Mark Johnstone's NPI (1891955076) is active in the NPPES registry as of the last update on 2008-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.