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APRIL LEIGH MCMAHON LCSW
NPI 1184963340
Social Worker - Clinical in Hartsdale, NY

Active since February 07, 2013PECOS EnrolledAccepts Medicare Assignment
141 N CENTRAL AVE, C/O WJCS, HARTSDALE, NY 10530(914) 949-7699 Get Directions Write a Review

NPPES record last updated: April 6, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 6, 2026, Jul 9, 2019, Jan 26, 2016 (3 updates tracked since 2016).

About April Leigh Mcmahon Lcsw NPPES

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

APRIL LEIGH MCMAHON LCSW (NPI 1184963340) is an individual clinical provider in Hartsdale, New York, licensed in New York (088438-01) and active in the NPI registry since February 2013. She is enrolled in Medicare PECOS and is a graduate of New York University School Of Medicine (2013).

NPPES Registry Identity

NPI1184963340
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameAPRIL LEIGH MCMAHONCredential: LCSW
Location Address141 N CENTRAL AVE, C/O WJCSHartsdale, NY 10530-1912
Mailing Address141 N Central Ave, C/o WjcsHartsdale, NY 10530-1912 · (914) 949-7699
Phone(914) 949-7699
Sole ProprietorNo
Medical School CMSNew York University School Of MedicineGraduated 2013
Enumeration DateFebruary 7, 2013
Last NPPES UpdateApril 6, 20263 updates tracked since enumeration
NPPES CertifiedApril 6, 2026
✔ NPI 1184963340 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 · 088438-01✔ Licensed in CA · 116964
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.
141 N CENTRAL AVE, Hartsdale, NY 10530
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Other Identifiers 1

Medicaid03505424NY

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

April Leigh Mcmahon 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 ID1951637206
PECOS Enrollment IDI20231003002537
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 Reassignment

Medicare enrollment records show April Mcmahon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Brightside Medical, P.C.
2,580 mi
Psychiatry
5214F DIAMOND HEIGHTS BLVD # 345
San Francisco, CA 94131
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Brightside Medical PC
  • 63 clinicians in this Medicare group
NPI 1801355482 (415) 360-3348

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 10530 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.

MS. FRAN KARP ANTELL LMSW
Social Worker (Clinical)
141 N CENTRAL AVE
HARTSDALE, NY 10530
Westchester County (914) 949-7699
SUZANNE N KATZ LCSW
Social Worker (Clinical)
141 N CENTRAL AVE
HARTSDALE, NY 10530
Westchester County (914) 949-6761
KENNETH MANN PSYD
Psychologist (Clinical)
141 N CENTRAL AVE
HARTSDALE, NY 10530
Westchester County (914) 949-7699
TALI FILSTEIN PSYCHOLOGY EXTERN
Student in an Organized Health Care Education/Training Program
141 N CENTRAL AVE
HARTSDALE, NY 10530
Westchester County (914) 949-7699
KELLI SEEGOPAUL LCSW
Social Worker (Clinical)
141 N CENTRAL AVE
HARTSDALE, NY 10530
Westchester County (914) 949-7699
MS. NATASHA KOSTEK
Student in an Organized Health Care Education/Training Program
141 N CENTRAL AVE
HARTSDALE, NY 10530
Westchester County (914) 949-7699
LAURA AMBER FERRELLI
Counselor (Mental Health)
141 N CENTRAL AVE
HARTSDALE, NY 10530
Westchester County (914) 949-7699
MS. ALYSSA ROSE QUINTANO NEARY PSYD
Psychologist
141 N CENTRAL AVE
HARTSDALE, NY 10530
Westchester County (914) 949-7699

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 April Mcmahon's NPI number?

The NPI number for April Mcmahon is 1184963340. It was assigned to this individual provider in the NPPES registry on February 7, 2013.

Where is April Mcmahon located?

April Mcmahon practices at 141 N Central Ave C/O Wjcs, Hartsdale, NY 10530. The listed phone number is (914) 949-7699.

What is April Mcmahon's specialty?

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

Is April Mcmahon enrolled in Medicare?

Yes. April Mcmahon 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 organization bills Medicare for April Mcmahon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), April Mcmahon reassigns Medicare benefits to Brightside Medical, P.C. (San Francisco, CA). The 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 April Mcmahon'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 April Mcmahon was last updated on April 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.