MRS. PATRICIA BYRNE LARSON LICSW
NPI 1659406791
Social Worker - Clinical in Newton, MA
About Mrs. Patricia Byrne Larson Licsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. PATRICIA BYRNE LARSON LICSW (NPI 1659406791) is an individual clinical provider in Newton, Massachusetts, licensed in Massachusetts (4196) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Mrs. Patricia Byrne Larson Licsw 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 Patricia Larson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Watertown, MA 02472
- Reassigned Medicare billing, Massachusetts enrollment
- 27 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 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02464 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEWTON, MA 02464
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 Patricia Larson's NPI number?
The NPI number for Patricia Larson is 1659406791. It was assigned to this individual provider in the NPPES registry on February 22, 2007.
Where is Patricia Larson located?
Patricia Larson practices at 188 Needham St, Newton, MA 02464. The listed phone number is (161) 752-7461.
What is Patricia Larson's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Patricia Larson enrolled in Medicare?
Yes. Patricia Larson 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 Patricia Larson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patricia Larson reassigns Medicare benefits to Square Medical Group LLC (Watertown, 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 Patricia Larson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Patricia Larson accept?
Health plans from Anthem Blue Cross and Blue Shield list Patricia Larson 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 Patricia Larson was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Mrs. Patricia Byrne Larson, LICSW · NPI 1659406791
Clinical provider in Newton, Massachusetts. Individual provider, active in the CMS NPPES registry since February 22, 2007.
## Identity
- **NPI:** 1659406791 (Entity type: Individual)
- **Enumerated:** February 22, 2007
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 4196 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 188 NEEDHAM ST, Newton, MA 02464-1596
- **Phone:** (161) 752-7461
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Square Medical Group LLC (NPI 1356515464, Watertown, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare ID-Type Unspecified P24006 (MA); Other P10309 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1659406791) · Data from the CMS NPPES public registry.