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MARGALIET LIGTENSTEIN LCSW
NPI 1558596999
Social Worker - Clinical in New Haven, CT

Active since May 28, 2009PECOS Enrolled
1440 WHALLEY AVE, NEW HAVEN, CT 06515(203) 389-5599(203) 389-5904 Get Directions Write a Review

NPPES record last updated: September 23, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Margaliet Ligtenstein Lcsw NPPES

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

MARGALIET LIGTENSTEIN LCSW (NPI 1558596999) is an individual clinical provider in New Haven, Connecticut, licensed in Connecticut (00800) and active in the NPI registry since May 2009. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1558596999
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARGALIET LIGTENSTEINCredential: LCSW
Location Address1440 WHALLEY AVENew Haven, CT 06515-1144
Mailing Address1440 Whalley AveNew Haven, CT 06515-1144 · (203) 389-5599 · Fax (203) 389-5904
Phone(203) 389-5599
Fax(203) 389-5904
Sole ProprietorNo
Enumeration DateMay 28, 2009
Last NPPES UpdateSeptember 23, 2019
✔ NPI 1558596999 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CT · 00800
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.
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License 00800 (CT)
1440 WHALLEY AVE, New Haven, CT 06515
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Other Identifiers 2

OtherCTGA000481CT · Abh
Medicaid004040572CT

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Margaliet Ligtenstein Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignments

2

Medicare enrollment records show Margaliet Ligtenstein reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Jewish Family Service Of New Haven Inc.
Same address
Mental Health (Including Community Mental Health Center)
1440 WHALLEY AVE
New Haven, CT 06515
  • Reassigned Medicare billing, Connecticut enrollment
  • 11 clinicians in this Medicare group
NPI 1326107376 (203) 389-5599
Margaliet Ligtenstein LLC
5.7 mi
Clinical
1 EVERGREEN AVE STE 24
Hamden, CT 06518
  • Reassigned Medicare billing, Connecticut enrollment
NPI 1285395418 (203) 530-0697

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06515 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 $60.82 – $183.10
Typical copayment $0.00 (range $15.20 – $45.77)
Most-billed visit code NA
Established Patient
$75.55 typical visit price
range $19.76 – $149.26
Typical copayment $18.88 (range $4.94 – $37.31)
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 10

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

KATE RICHARDSON
Social Worker (Clinical)
1440 WHALLEY AVE
NEW HAVEN, CT 06515
South Central Connecticut Planning Region (203) 389-5599
MRS. ELIZABETH KUNNECKE DAVENPORT LMSW
Social Worker
1440 WHALLEY AVE
NEW HAVEN, CT 06515
South Central Connecticut Planning Region (203) 389-5599
MRS. HENI SCHWARTZ LCSW
Counselor (Mental Health)
1440 WHALLEY AVE
NEW HAVEN, CT 06515
South Central Connecticut Planning Region (203) 389-5599
JEWISH FAMILY SERVICE OF NEW HAVEN INC
Community/Behavioral Health
1440 WHALLEY AVE
NEW HAVEN, CT 06515
South Central Connecticut Planning Region (203) 389-5599
AMY G RASHBA MSW,LCSW
Social Worker (Clinical)
1440 WHALLEY AVE
NEW HAVEN, CT 06515
South Central Connecticut Planning Region (203) 389-5599
MARCY R. KLEIN LCSW
Social Worker
1440 WHALLEY AVE
NEW HAVEN, CT 06515
South Central Connecticut Planning Region (203) 389-5599
KAREN M MERKEL PH.D.
Psychologist (Clinical)
1440 WHALLEY AVE
NEW HAVEN, CT 06515
South Central Connecticut Planning Region (203) 389-5599
JEWISH FAMILY SERVICE OF NEW HAVEN INC.
Clinic/Center (Mental Health (Including Community Mental Health Center))
1440 WHALLEY AVE
NEW HAVEN, CT 06515
South Central Connecticut Planning Region (203) 389-5599

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 Margaliet Ligtenstein's NPI number?

The NPI number for Margaliet Ligtenstein is 1558596999. It was assigned to this individual provider in the NPPES registry on May 28, 2009.

Where is Margaliet Ligtenstein located?

Margaliet Ligtenstein practices at 1440 Whalley Ave, New Haven, CT 06515. The listed phone number is (203) 389-5599.

What is Margaliet Ligtenstein's specialty?

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

Is Margaliet Ligtenstein enrolled in Medicare?

Yes. Margaliet Ligtenstein is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Margaliet Ligtenstein's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Margaliet Ligtenstein reassigns Medicare benefits to 2 organizations: Jewish Family Service Of New Haven Inc. (New Haven, CT) and Margaliet Ligtenstein LLC (Hamden, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Margaliet Ligtenstein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Margaliet Ligtenstein was last updated on September 23, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years 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.