MARY MARGARET BRERETON LCSW
NPI 1457579948
Social Worker - Clinical in Cranford, NJ
About Mary Margaret Brereton Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY MARGARET BRERETON LCSW (NPI 1457579948) is an individual clinical provider in Cranford, New Jersey, licensed in New Jersey (44SC05382800) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses
Accepted 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
Mary Margaret Brereton 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.
Medicare Billing Reassignment
Medicare enrollment records show Mary Brereton reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Toms River, NJ 08753
- Reassigned Medicare billing, New Jersey enrollment
- 93 clinicians in this Medicare group
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 07016 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Brereton's NPI number?
The NPI number for Mary Brereton is 1457579948. It was assigned to this individual provider in the NPPES registry on April 23, 2007.
Where is Mary Brereton located?
Mary Brereton practices at 113 Lincoln Ave E, Cranford, NJ 07016. The listed phone number is (973) 580-5653.
What is Mary Brereton's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Mary Brereton enrolled in Medicare?
Yes. Mary Brereton 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 Mary Brereton's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Brereton reassigns Medicare benefits to Lifebulb LLC (Toms River, NJ). 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 Mary Brereton's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Brereton accept?
Health plans from Oscar Health list Mary Brereton 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 Brereton was last updated on May 31, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Mary Margaret Brereton, LCSW · NPI 1457579948
Clinical provider in Cranford, New Jersey. Individual provider, active in the CMS NPPES registry since April 23, 2007.
## Identity
- **NPI:** 1457579948 (Entity type: Individual)
- **Enumerated:** April 23, 2007
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 44SC05382800 (New Jersey)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 113 LINCOLN AVE E, Cranford, NJ 07016-2820
- **Phone:** (973) 580-5653
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Lifebulb LLC (NPI 1699491464, Toms River, NJ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** May 31, 2013
---
Source: [NPI Profile](https://npiprofile.com/npi/1457579948) · Data from the CMS NPPES public registry.