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IRWIN MARC LENEFSKY LCSW
NPI 1811969751
Social Worker - Clinical in Brooklyn, NY

Active since February 05, 2006PECOS Enrolled
1049 38TH ST, BROOKLYN, NY 11219(718) 877-0044 Get Directions Write a Review

NPPES record last updated: September 29, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Irwin Marc Lenefsky Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

IRWIN MARC LENEFSKY LCSW (NPI 1811969751) is an individual clinical provider in Brooklyn, New York, licensed in New York (R034085-1) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS and is a graduate of Other (2004).

NPPES Registry Identity

NPI1811969751
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameIRWIN MARC LENEFSKYCredential: LCSW
Location Address1049 38TH STBrooklyn, NY 11219-1012
Mailing Address4089 Ocean AveBrooklyn, NY 11235-3714 · (718) 877-0044
Phone(718) 877-0044
Sole ProprietorYes
Medical School CMSOtherGraduated 2004
Enumeration DateFebruary 5, 2006
Last NPPES UpdateSeptember 29, 2025
NPPES CertifiedSeptember 29, 2025
✔ NPI 1811969751 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in NY · R034085-1
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
1049 38TH ST, Brooklyn, NY 11219
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Irwin Marc Lenefsky Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8729327986
PECOS Enrollment IDI20190305002880
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychiatric diagnostic evaluation 90791
A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.
24 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11219 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $67.40 – $203.53
Typical copayment $0.00 (range $16.85 – $50.88)
Most-billed visit code NA
Established Patient
$83.44 typical visit price
range $21.66 – $164.45
Typical copayment $20.86 (range $5.41 – $41.11)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

YAEL FARKAS SASSOON SLP
Speech-Language Pathologist
1049 38TH ST
BROOKLYN, NY 11219
Kings County (718) 633-6666
AMY ALBENDA OTR/L
Occupational Therapist
1049 38TH ST
BROOKLYN, NY 11219
Kings County (718) 633-6666
MIRIAM FOGEL
Case Manager/Care Coordinator
1049 38TH ST
BROOKLYN, NY 11219
Kings County (718) 633-6666
GOLDIE LOEWI
Specialist
1049 38TH ST
BROOKLYN, NY 11219
Kings County (718) 633-6666
SARAH ORGEL MS ED, BCBA
Specialist
1049 38TH ST
BROOKLYN, NY 11219
Kings County (718) 755-8125
DEBORAH LITCHMAN LLC
Early Intervention Provider Agency
1049 38TH ST
BROOKLYN, NY 11219
Kings County (718) 633-6666
METROPOLITAN DEVELOPMENT CENTER
Day Training, Developmentally Disabled Services
1049 38TH ST
BROOKLYN, NY 11219
Kings County (718) 633-3334
MINDEL ZELL
Case Manager/Care Coordinator
1049 38TH ST
BROOKLYN, NY 11219
Kings County (718) 633-6666

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Irwin Lenefsky's NPI number?

The NPI number for Irwin Lenefsky is 1811969751. It was assigned to this individual provider in the NPPES registry on February 5, 2006.

Where is Irwin Lenefsky located?

Irwin Lenefsky practices at 1049 38th St, Brooklyn, NY 11219. The listed phone number is (718) 877-0044.

What is Irwin Lenefsky's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Irwin Lenefsky enrolled in Medicare?

Yes. Irwin Lenefsky is registered in the Medicare PECOS enrollment system.

What insurance does Irwin Lenefsky accept?

Health plans from Providence Health Plan list Irwin Lenefsky as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Irwin Lenefsky was last updated on September 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.