MARY M. BAZYLEWICZ MSW
NPI 1669758397
Social Worker in Ipswich, MA
About Mary M. Bazylewicz Msw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY M. BAZYLEWICZ MSW (NPI 1669758397) is an individual social worker in Ipswich, Massachusetts, licensed in Massachusetts (118269) and active in the NPI registry since October 2011. She is enrolled in Medicare PECOS and is a graduate of Other (2011).
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 M. Bazylewicz Msw 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 Reassignments
4Medicare enrollment records show Mary Bazylewicz reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Beverly, MA 01915
- Reassigned Medicare billing, Massachusetts enrollment
- 98 clinicians in this Medicare group
Peabody, MA 01960
- Reassigned Medicare billing, Massachusetts enrollment
- Also billed through NPI 1538194980 (Massachusetts)
- 1,841 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Needham, MA 02494
- Reassigned Medicare billing, Massachusetts enrollment
- 356 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.
Areas of Expertise CMS Part B claims
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.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
IPSWICH, MA 01938
IPSWICH, MA 01938
IPSWICH, MA 01938
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 Bazylewicz's NPI number?
The NPI number for Mary Bazylewicz is 1669758397. It was assigned to this individual provider in the NPPES registry on October 26, 2011.
Where is Mary Bazylewicz located?
Mary Bazylewicz practices at 36 Essex Rd, Ipswich, MA 01938. The listed phone number is (978) 356-5522.
What is Mary Bazylewicz's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Mary Bazylewicz enrolled in Medicare?
Yes. Mary Bazylewicz 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 Mary Bazylewicz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Bazylewicz reassigns Medicare benefits to 4 organizations: Northeast Behavioral Health Corporation (Beverly, MA), Lahey Clinic, Inc (Peabody, MA), Brigham & Womens Physicians Organization Inc (Boston, MA) and Medical Care Of Boston Management Corporation (Needham, MA). 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 Mary Bazylewicz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Bazylewicz accept?
Health plans from Harvard Pilgrim Health Care and WellSense Health Plan list Mary Bazylewicz 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 Bazylewicz was last updated on December 12, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 M. Bazylewicz, MSW · NPI 1669758397
Social Worker provider in Ipswich, Massachusetts. Individual provider, active in the CMS NPPES registry since October 26, 2011.
## Identity
- **NPI:** 1669758397 (Entity type: Individual)
- **Enumerated:** October 26, 2011
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** 118269 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 36 ESSEX RD, Ipswich, MA 01938-2599
- **Phone:** (978) 356-5522
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Northeast Behavioral Health Corporation (NPI 1154302586, Beverly, MA); Lahey Clinic, Inc (NPI 1063447316, Peabody, MA); Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); Medical Care Of Boston Management Corporation (NPI 1437196359, Needham, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** December 12, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1669758397) · Data from the CMS NPPES public registry.