Stacy Messmer, LCSW
NPI 1790074920 · Clinical Social Worker · Mineola, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stacy Messmer, LCSW is a Clinical Social Worker provider in Mineola, NY (NPI 1790074920).
Provider details
- NPI number
- 1790074920
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 080001 (NY)
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
15 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
- 2011-03-28
- Last updated
- 2021-11-04
- Certified
- 2021-11-04
Frequently asked questions
- What is Stacy Messmer's NPI number?
- Stacy Messmer's National Provider Identifier (NPI) is 1790074920, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stacy Messmer's specialty?
- Stacy Messmer is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Stacy Messmer located?
- Stacy Messmer's practice location on file with NPPES is 110 Main St, Mineola, NY 11501-4000.
- What is Stacy Messmer's phone number?
- The practice phone number listed in the NPPES registry for Stacy Messmer is (516) 747-5644.
- Does Stacy Messmer accept Medicare?
- Stacy Messmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stacy Messmer's NPI active?
- Yes — Stacy Messmer's NPI (1790074920) is active in the NPPES registry as of the last update on 2021-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.