Steven Zessis, LICSW
NPI 1255612503 · Clinical Social Worker · Lowell, MA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Zessis, LICSW is a Clinical Social Worker provider in Lowell, MA (NPI 1255612503).
Provider details
- NPI number
- 1255612503
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Male
- Sole proprietor
- No
- License
- 111800 (MA)
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
14 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
- 2011-08-31
- Last updated
- 2011-08-31
Frequently asked questions
- What is Steven Zessis's NPI number?
- Steven Zessis's National Provider Identifier (NPI) is 1255612503, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Zessis's specialty?
- Steven Zessis is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Steven Zessis located?
- Steven Zessis's practice location on file with NPPES is 126 Phoenix Ave, Lowell, MA 01852-4931.
- What is Steven Zessis's phone number?
- The practice phone number listed in the NPPES registry for Steven Zessis is (978) 513-2393.
- Does Steven Zessis accept Medicare?
- Steven Zessis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Zessis's NPI active?
- Yes — Steven Zessis's NPI (1255612503) is active in the NPPES registry as of the last update on 2011-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.