Margaret Mary Slayback, LCSW-R, CASAC
Clinical Social Worker · Massapequa, NY
Margaret Mary Slayback, LCSW-R, CASAC is a clinical social worker with a practice address in Massapequa, New York, and NPI 1801062252, issued on May 6, 2008. Check the license (New York R-031242, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret Mary Slayback
- Credential
- LCSW-R, CASAC
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License numbers
- R-031242 NY
1648 NY
Self-reported in NPPES; status is on the state search - Practice location
- 707 Broadway, Massapequa, NY 11758
- Phone
- (516) 885-6255
- Enumerated
- May 6, 2008
- Record last updated
- May 6, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160120000871); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 29,293 in New York → Look up another NPI →
Also registered at 707 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Winsome Brown-Cooke, MSWClinical Social Worker1558450387
- Glenn Forrest, DDSGeneral Practice Dentistry1164631016
Verify Margaret Mary Slayback in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license R-031242Check 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
- Community Counseling And Lcsw ServicesCenter Moriches, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Mary Slayback among 29,293 clinical social worker records in New York
Margaret Mary Slayback, LCSW-R, CASAC is one of 29,293 clinical social worker records with a practice address in New York. 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 2008, is newer than 32% of them.
- NPI issued2008 · 32% of these records are older, 62% newer
- In a Medicare fileYes · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated1982 · median 2001 among the 5,004 with a school on file
- Record last updated2008 · 65% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
86 clinical social worker records list a practice address in Massapequa
They are 86 of the 1,195 NPPES records with a practice address in Massapequa, and 29,293 clinical social worker records in New York.
All 29,293 in New York → Every provider in Massapequa → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Winsome Brown-Cooke, MSWMassapequa, NY 117581558450387
- Arthur Castellano, MSWMassapequa, NY 117581528173101
- David Daisley, LCSW, PSY.D.Massapequa, NY 117581609961002
- Jacqueline Friedberg, LCSWMassapequa, NY 117581598875429
- Laura Haas, LCSWN Massapequa, NY 117581538261268
- Adrienne Lopresti, LMSW, RMassapequa, NY 117581780779645
- Thomas McCoy, LCSWMassapequa, NY 117581063488377
- Mary Ann McGrath, LCSWN Massapequa, NY 117581477542900
Common questions
What is Margaret Mary Slayback, LCSW-R, CASAC's NPI number?
Margaret Mary Slayback, LCSW-R, CASAC's National Provider Identifier (NPI) is 1801062252, issued on May 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Mary Slayback, LCSW-R, CASAC located?
The NPPES record lists a practice address at 707 Broadway, Massapequa, NY, 11758. Phone: (516) 885-6255. Providers update this record themselves, so call before visiting.
How can I verify Margaret Mary Slayback, LCSW-R, CASAC's license?
NPPES lists New York license number R-031242, as entered by the provider. Search the New York 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.