Steven Zessis, LICSW
Clinical Social Worker · Lowell, MA
Steven Zessis, LICSW is a clinical social worker with a practice address in Lowell, Massachusetts, and NPI 1255612503, issued on Aug 31, 2011. Check the license (Massachusetts 111800, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Steven Zessis
- Credential
- LICSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 111800 MA
Self-reported in NPPES; status is on the state search - Practice location
- 126 Phoenix Ave, Lowell, MA 01852
- Phone
- (978) 513-2393
- Enumerated
- Aug 31, 2011
- Record last updated
- Aug 31, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210114001430); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 17,815 in Massachusetts → Look up another NPI →
Also registered at 126 Phoenix Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Melissa AlfonsoDevelopmental Therapist1386426260
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- Angela AntoshDevelopmental Therapist1841583671
Verify Steven Zessis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 111800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Integrated Behavioral Care New England LLCNorth Andover, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Steven Zessis among 17,815 clinical social worker records in Massachusetts
Steven Zessis, LICSW is one of 17,815 clinical social worker records with a practice address in Massachusetts. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 42% of them.
- NPI issued2011 · 42% of these records are older, 55% newer
- In a Medicare fileYes · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated1997 · median 2004 among the 3,059 with a school on file
- Record last updated2011 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
248 clinical social worker records list a practice address in Lowell
They are 248 of the 2,992 NPPES records with a practice address in Lowell, and 17,815 clinical social worker records in Massachusetts.
All 17,815 in Massachusetts → Every provider in Lowell → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Mandra Biscornet, LICSWLowell, MA 018521952354862
- Margaret Chung, LICSWLowell, MA 018521679540629
- Stephen Folven, LICSWLowell, MA 018521548269665
- Maryjo Haggerty, LICSW DIPLOMATELowell, MA 018521649260282
- Charlotte Herrmann, LICSWLowell, MA 018521336116698
- Tali Holzman, LCSWLowell, MA 018521417901448
- Martha Kaselis, LICSWLowell, MA 018521417901117
- Carolyn Kroll, LICSWLowell, MA 018521528005584
Common questions
What is Steven Zessis, LICSW's NPI number?
Steven Zessis, LICSW's National Provider Identifier (NPI) is 1255612503, issued on Aug 31, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Steven Zessis, LICSW located?
The NPPES record lists a practice address at 126 Phoenix Ave, Lowell, MA, 01852. Phone: (978) 513-2393. Providers update this record themselves, so call before visiting.
How can I verify Steven Zessis, LICSW's license?
NPPES lists Massachusetts license number 111800, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.