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MR. ATO WILLIAMS LCSW, CASAC-MC
NPI 1427590447
Social Worker - Clinical in Middletown, NY

Active since November 08, 2016PECOS EnrolledAccepts Medicare Assignment
10 AVONCROFT LANE, MIDDLETOWN, NY 10940(347) 206-5699 Get Directions Write a Review

NPPES record last updated: April 12, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 12, 2024, Feb 9, 2023, Nov 8, 2016 (3 updates tracked since 2016).

About Mr. Ato Williams Lcsw, Casac-mc NPPES

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

MR. ATO WILLIAMS LCSW, CASAC-MC (NPI 1427590447) is an individual clinical provider in Middletown, New York, licensed in New York (093968) and active in the NPI registry since November 2016. He is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1427590447
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameMR. ATO WILLIAMSCredential: LCSW, CASAC-MC
Location Address10 AVONCROFT LANEMiddletown, NY 10940
Mailing Address10 Avoncroft LaneMiddletown, NY 10940 · (347) 206-5699
Phone(347) 206-5699
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateNovember 8, 2016
Last NPPES UpdateApril 12, 20243 updates tracked since enumeration
NPPES CertifiedMarch 28, 2024
✔ NPI 1427590447 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 · 093968
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 · Addiction (Substance Use Disorder)Taxonomy 101YA0400X · License 29696 (NY)
10 AVONCROFT LANE, Middletown, NY 10940
Open in Google Maps ↗

Other Identifiers 1

Other29696NY · Oasas/casac

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

Mr. Ato Williams Lcsw, Casac-mc 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 ID3072979434
PECOS Enrollment IDI20230510001945
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

3

Medicare enrollment records show Ato Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Montefiore Medical Center
49 mi
Anesthesiology
111 E 210TH ST
Bronx, NY 10467
  • Reassigned Medicare billing, New York enrollment
  • 5,251 clinicians in this Medicare group
NPI 1063525152 (914) 378-6021
Interborough Developmental And Consultation Center, Inc.
64 mi
Case Management
1623 KINGS HWY
Brooklyn, NY 11229
  • Reassigned Medicare billing, New York enrollment
  • 306 clinicians in this Medicare group
NPI 1588611842 (718) 375-1200
Supportive Care Psychology Of Ny PC
94 mi
Clinical
27 RANDOLPH RD
Howell, NJ 07731
  • Reassigned Medicare billing, New York enrollment
  • 156 clinicians in this Medicare group
NPI 1104315068 (718) 298-4375

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

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 30 minutes 90832
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 30-minute session, the therapist helps you explore feelings, thoughts, and behaviors to better understand yourself and manage life's challenges.
42 services26 patients
Psychiatric diagnostic evaluation 90791
A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.
33 services30 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10940 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 $61.88 – $187.05
Typical copayment $0.00 (range $15.47 – $46.76)
Most-billed visit code NA
Established Patient
$76.88 typical visit price
range $19.92 – $151.94
Typical copayment $19.22 (range $4.98 – $37.98)
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 Ato Williams's NPI number?

The NPI number for Ato Williams is 1427590447. It was assigned to this individual provider in the NPPES registry on November 8, 2016.

Where is Ato Williams located?

Ato Williams practices at 10 Avoncroft Lane, Middletown, NY 10940. The listed phone number is (347) 206-5699.

What is Ato Williams's specialty?

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

Is Ato Williams enrolled in Medicare?

Yes. Ato Williams 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 Ato Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ato Williams reassigns Medicare benefits to 3 organizations: Montefiore Medical Center (Bronx, NY), Interborough Developmental And Consultation Center, Inc. (Brooklyn, NY) and Supportive Care Psychology Of Ny PC (Howell, NJ). 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 Ato Williams'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 Ato Williams was last updated on April 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.