Mark Messer
NPI 1114515491 · Addiction (Substance Use Disorder) Psychologist · Grove City, OH
Mark Messer is a Addiction (Substance Use Disorder) Psychologist provider in Grove City, OH (NPI 1114515491).
Provider details
- NPI number
- 1114515491
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- 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
5 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
- 2021-01-04
- Last updated
- 2021-01-04
- Certified
- 2021-01-04
Frequently asked questions
- What is Mark Messer's NPI number?
- Mark Messer's National Provider Identifier (NPI) is 1114515491, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Messer's specialty?
- Mark Messer is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Messer located?
- Mark Messer's practice location on file with NPPES is 3880 Jackpot Rd, Grove City, OH 43123-7500.
- What is Mark Messer's phone number?
- The practice phone number listed in the NPPES registry for Mark Messer is (614) 594-3988.
- Is Mark Messer's NPI active?
- Yes — Mark Messer's NPI (1114515491) is active in the NPPES registry as of the last update on 2021-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.