Marc Messner, LMSW, M. ED.
NPI 1124788831 · Social Worker · Frederick, MD
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Messner, LMSW, M. ED. is a Social Worker provider in Frederick, MD (NPI 1124788831).
Provider details
- NPI number
- 1124788831
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW, M. ED.
- Sex
- Male
- Sole proprietor
- No
- License
- 106610 (TX)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
4 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
- 2021-12-21
- Last updated
- 2021-12-21
- Certified
- 2021-12-21
Frequently asked questions
- What is Marc Messner's NPI number?
- Marc Messner's National Provider Identifier (NPI) is 1124788831, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Messner's specialty?
- Marc Messner is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Marc Messner located?
- Marc Messner's practice location on file with NPPES is 124 N Court St, Frederick, MD 21701-6614.
- What is Marc Messner's phone number?
- The practice phone number listed in the NPPES registry for Marc Messner is (301) 304-7108.
- Does Marc Messner accept Medicare?
- Marc Messner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Messner's NPI active?
- Yes — Marc Messner's NPI (1124788831) is active in the NPPES registry as of the last update on 2021-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.