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MS. ESTEFANIA DIAZ LCSW
NPI 1659675239
Social Worker - Clinical in New York, NY

Active since December 22, 2010PECOS Enrolled
622 W 168TH ST # VC4-E, NEW YORK, NY 10032(212) 305-7259(212) 305-7400 Get Directions Write a Review

NPPES record last updated: May 31, 2016. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Ms. Estefania Diaz Lcsw NPPES

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

MS. ESTEFANIA DIAZ LCSW (NPI 1659675239) is an individual clinical provider in New York, New York, licensed in New York (0832701) and active in the NPI registry since December 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1659675239
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMS. ESTEFANIA DIAZCredential: LCSW
Location Address622 W 168TH ST # VC4-ENew York, NY 10032-3720
Mailing Address622 W 168th St # Vc4-eNew York, NY 10032-3720 · (212) 305-7259 · Fax (212) 305-7400
Phone(212) 305-7259
Fax(212) 305-7400
Sole ProprietorNo
Enumeration DateDecember 22, 2010
Last NPPES UpdateMay 31, 2016
✔ NPI 1659675239 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in NY · 0832701✔ Licensed in NY · 082198-1
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.
622 W 168TH ST # VC4-E, New York, NY 10032
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Other Identifiers 1

Other1285628552NY · Agency

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Cigna Healthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Estefania Diaz 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 Estefania Diaz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Valera Medical, P.A.
8.7 mi
Psychiatry
134 N 4TH ST
Brooklyn, NY 11249
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: Valera Medical PA
  • 17 clinicians in this Medicare group
NPI 1871248757 (646) 450-7748
Valera Medical, P.C.
8.7 mi
Psychiatry
134 N 4TH ST
Brooklyn, NY 11249
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Valera Medical PC
  • 315 clinicians in this Medicare group
NPI 1437782349 (646) 450-7748

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 10032 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 $65.69 – $198.19
Typical copayment $0.00 (range $16.42 – $49.54)
Most-billed visit code NA
Established Patient
$81.44 typical visit price
range $21.20 – $160.66
Typical copayment $20.36 (range $5.30 – $40.16)
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.

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 Estefania Diaz's NPI number?

The NPI number for Estefania Diaz is 1659675239. It was assigned to this individual provider in the NPPES registry on December 22, 2010.

Where is Estefania Diaz located?

Estefania Diaz practices at 622 W 168th St # Vc4-E, New York, NY 10032. The listed phone number is (212) 305-7259.

What is Estefania Diaz's specialty?

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

Is Estefania Diaz enrolled in Medicare?

Yes. Estefania Diaz is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Estefania Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Estefania Diaz reassigns Medicare benefits to 2 organizations: Valera Medical, P.A. (Brooklyn, NY) and Valera Medical, P.C. (Brooklyn, NY). 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 Estefania Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Estefania Diaz accept?

Health plans from Anthem Blue Cross and Blue Shield and Cigna Healthcare list Estefania Diaz 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 Estefania Diaz was last updated on May 31, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.