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SARAH WILLIAMSON
NPI 1457686164
Social Worker - Clinical in Brookline, MA

Active since October 14, 2009PECOS EnrolledAccepts Medicare Assignment
68 COLUMBIA ST, BROOKLINE, MA 02446(617) 894-2557 Get Directions Write a Review

NPPES record last updated: October 20, 2022. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About Sarah Williamson NPPES

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

SARAH WILLIAMSON (NPI 1457686164) is an individual clinical provider in Brookline, Massachusetts and active in the NPI registry since October 2009. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1457686164
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameSARAH WILLIAMSON
Location Address68 COLUMBIA STBrookline, MA 02446-2432
Mailing Address68 Columbia StBrookline, MA 02446-2432 · (617) 894-2557
Phone(617) 894-2557
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateOctober 14, 2009
Last NPPES UpdateOctober 20, 2022
NPPES CertifiedOctober 20, 2022
✔ NPI 1457686164 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
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
68 COLUMBIA ST, Brookline, MA 02446
Open in Google Maps ↗

Secondary Practice Location 1

Location 1161 S Huntington AveBoston, MA 02130-4885 · Phone (617) 264-5355

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

Sarah Williamson 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 ID345781811
PECOS Enrollment IDI20240924003045
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 Sarah Williamson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Brookline Community Mental Health Center Inc.
0.6 mi
Community/Behavioral Health
43 GARRISON RD
Brookline, MA 02445
  • Reassigned Medicare billing, Massachusetts enrollment
  • 60 clinicians in this Medicare group
NPI 1881610244 (617) 277-8107

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 02446 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 $63.72 – $189.86
Typical copayment $0.00 (range $15.93 – $47.46)
Most-billed visit code NA
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
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 Sarah Williamson's NPI number?

The NPI number for Sarah Williamson is 1457686164. It was assigned to this individual provider in the NPPES registry on October 14, 2009.

Where is Sarah Williamson located?

Sarah Williamson practices at 68 Columbia St, Brookline, MA 02446. The listed phone number is (617) 894-2557.

What is Sarah Williamson's specialty?

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

Is Sarah Williamson enrolled in Medicare?

Yes. Sarah Williamson 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 Sarah Williamson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Williamson reassigns Medicare benefits to Brookline Community Mental Health Center Inc. (Brookline, MA). 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 Sarah Williamson'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 Sarah Williamson was last updated on October 20, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.