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MARY C ALEXANDER LCSW
NPI 1629657358
Social Worker - Clinical in Brooklyn, NY

Active since April 08, 2021PECOS EnrolledAccepts Medicare Assignment
134 N 4TH ST, BROOKLYN, NY 11249(757) 831-7966 Get Directions Write a Review

NPPES record last updated: May 8, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 8, 2025, Apr 8, 2021 (2 updates tracked since 2021).

About Mary C Alexander Lcsw NPPES

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

MARY C ALEXANDER LCSW (NPI 1629657358) is an individual clinical provider in Brooklyn, New York, licensed in New York (100078) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1629657358
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARY C ALEXANDERCredential: LCSW
Location Address134 N 4TH STBrooklyn, NY 11249-3296
Mailing Address134 N 4th StBrooklyn, NY 11249-3296
Phone(757) 831-7966
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateApril 8, 2021
Last NPPES UpdateMay 8, 20252 updates tracked since enumeration
NPPES CertifiedMay 8, 2025
✔ NPI 1629657358 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 · 100078
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 ListedSocial WorkerTaxonomy 104100000X · License 104233 (TX), 6801108341 (MI)
134 N 4TH ST, Brooklyn, NY 11249
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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 and accepts Medicare assignment

Mary C Alexander 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 ID2365960234
PECOS Enrollment IDI20250514002484
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11249 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.

JESSICA L. HOFF PA-C
Physician Assistant
134 N 4TH ST
BROOKLYN, NY 11249
Kings County (215) 585-2144
GULSANAM AZIEVA LMHC
Counselor (Mental Health)
134 N 4TH ST
BROOKLYN, NY 11249
Kings County (646) 450-7748
EMILY SHERMAN
Counselor (Mental Health)
134 N 4TH ST
BROOKLYN, NY 11249
Kings County (646) 450-7748
TEAMWORK MANAGEMENT SERVICES, LLC
Behavior Analyst
134 N 4TH ST
BROOKLYN, NY 11249
Kings County (347) 557-8468
MICHELE BELL LMHC
Counselor (Mental Health)
134 N 4TH ST
BROOKLYN, NY 11249
Kings County (646) 450-7748
MADISON GREENFIELD LCSW
Social Worker (Clinical)
134 N 4TH ST
BROOKLYN, NY 11249
Kings County (646) 450-7748
LORETTA MARY AVALLONE LCSW
Social Worker (Clinical)
134 N 4TH ST
BROOKLYN, NY 11249
Kings County (646) 450-7748
ANNELISE HOFMANN
Social Worker
134 N 4TH ST
BROOKLYN, NY 11249
Kings County (646) 450-7748

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 Mary Alexander's NPI number?

The NPI number for Mary Alexander is 1629657358. It was assigned to this individual provider in the NPPES registry on April 8, 2021.

Where is Mary Alexander located?

Mary Alexander practices at 134 N 4th St, Brooklyn, NY 11249. The listed phone number is (757) 831-7966.

What is Mary Alexander's specialty?

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

Is Mary Alexander enrolled in Medicare?

Yes. Mary Alexander 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.

What insurance does Mary Alexander accept?

Health plans from Providence Health Plan list Mary Alexander 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 Mary Alexander was last updated on May 8, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.