Mitchell F. Olster, LCSW
Clinical Social Worker · Massapequa, NY
Mitchell F. Olster, LCSW is a clinical social worker with a practice address in Massapequa, New York, and NPI 1265519284, issued on Nov 1, 2006. Check the license (New York R287581, as entered in NPPES) with the New York board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mitchell F. Olster
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- R287581 NY
Self-reported in NPPES; status is on the state search - Practice location
- 5500 Merrick Road, Massapequa, NY 11758
- Phone
- (516) 541-9849
- Enumerated
- Nov 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070227000719); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 29,293 in New York → Look up another NPI →
Also registered at 5500 Merrick Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Raymond Cecora, PT DPT MSPhysical Therapist1275747578
- Susan Depalo, PTPhysical Therapist1497961379
- Vadim Lerman, D.O.Orthopaedic Surgery of the Spine Physician1669683280
- Jonathan Owens, M.D.Orthopaedic Surgery Physician1801896337
Verify Mitchell F. Olster 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 R287581Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mitchell F. Olster among 29,293 clinical social worker records in New York
Mitchell F. Olster, LCSW 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 not. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 83% newer
- In a Medicare fileNo · 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 updated2007 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
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 Mitchell F. Olster, LCSW's NPI number?
Mitchell F. Olster, LCSW's National Provider Identifier (NPI) is 1265519284, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mitchell F. Olster, LCSW located?
The NPPES record lists a practice address at 5500 Merrick Road, Massapequa, NY, 11758. Phone: (516) 541-9849. Providers update this record themselves, so call before visiting.
How can I verify Mitchell F. Olster, LCSW's license?
NPPES lists New York license number R287581, 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. 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.