Steven Marsh
NPI 1790156693 · Marriage & Family Therapist · East Islip, NY
Steven Marsh is a Marriage & Family Therapist provider in East Islip, NY (NPI 1790156693).
Provider details
- NPI number
- 1790156693
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
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
10 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
- 2015-10-18
- Last updated
- 2026-05-24
Frequently asked questions
- What is Steven Marsh's NPI number?
- Steven Marsh's National Provider Identifier (NPI) is 1790156693, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Marsh's specialty?
- Steven Marsh is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Steven Marsh located?
- Steven Marsh's practice location on file with NPPES is 107 W Main St, East Islip, NY 11730-2337.
- What is Steven Marsh's phone number?
- The practice phone number listed in the NPPES registry for Steven Marsh is (631) 767-1480.
- Is Steven Marsh's NPI active?
- Yes — Steven Marsh's NPI (1790156693) is active in the NPPES registry as of the last update on 2026-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.