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MRS. GWENDOLYN R BUTLER LCSW
NPI 1568533115
Social Worker - Clinical in Sea Cliff, NY

Active since November 13, 2006PECOS EnrolledAccepts Medicare Assignment
16 PROSPECT AVE APT 1, SEA CLIFF, NY 11579(929) 319-7740 Get Directions Write a Review

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

About Mrs. Gwendolyn R Butler Lcsw NPPES

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

MRS. GWENDOLYN R BUTLER LCSW (NPI 1568533115) is an individual clinical provider in Sea Cliff, New York, licensed in New York (079430) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of Other (2006).

NPPES Registry Identity

NPI1568533115
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMRS. GWENDOLYN R BUTLERCredential: LCSW
Location Address16 PROSPECT AVE APT 1Sea Cliff, NY 11579-1065
Mailing Address16 Prospect Ave Apt 1Sea Cliff, NY 11579-1065 · (929) 319-7750
Phone(929) 319-7740
Sole ProprietorYes
Medical School CMSOtherGraduated 2006
Enumeration DateNovember 13, 2006
Last NPPES UpdateFebruary 18, 2026
NPPES CertifiedFebruary 18, 2026
✔ NPI 1568533115 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 NY · 079430
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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
16 PROSPECT AVE APT 1, Sea Cliff, NY 11579
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Accepted Insurance

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mrs. Gwendolyn R Butler Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2365923737
PECOS Enrollment IDI20260224001904
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 Gwendolyn Butler reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Che Senior Psychological Services, PC
21 mi
Clinical
300 CADMAN PLZ W
Brooklyn, NY 11201
  • Reassigned Medicare billing, New York enrollment
  • 457 clinicians in this Medicare group
NPI 1023078219 (888) 515-3834
Knapp Street Psychiatry, PC
23 mi
Clinical
2433 KNAPP ST STE 306
Brooklyn, NY 11235
  • Reassigned Medicare billing, New York enrollment
  • 436 clinicians in this Medicare group
NPI 1043248776 (888) 515-3834

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 11579 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.

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 Gwendolyn Butler's NPI number?

The NPI number for Gwendolyn Butler is 1568533115. It was assigned to this individual provider in the NPPES registry on November 13, 2006.

Where is Gwendolyn Butler located?

Gwendolyn Butler practices at 16 Prospect Ave Apt 1, Sea Cliff, NY 11579. The listed phone number is (929) 319-7740.

What is Gwendolyn Butler's specialty?

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

Is Gwendolyn Butler enrolled in Medicare?

Yes. Gwendolyn Butler is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Gwendolyn Butler's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gwendolyn Butler reassigns Medicare benefits to 2 organizations: Che Senior Psychological Services, PC (Brooklyn, NY) and Knapp Street Psychiatry, PC (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 Gwendolyn Butler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gwendolyn Butler accept?

Health plans from Oscar Health list Gwendolyn Butler 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 Gwendolyn Butler was last updated on February 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.