COLM J BRENNAN LCSW
NPI 1710509906
Social Worker - Clinical in South Portland, ME
About Colm J Brennan Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
COLM J BRENNAN LCSW (NPI 1710509906) is an individual clinical provider in South Portland, Maine, licensed in Maine (LC19205) and active in the NPI registry since May 2020. He is enrolled in Medicare PECOS, is affiliated with Maine Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 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
Colm J Brennan 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 Reassignments
2Medicare enrollment records show Colm Brennan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cape Elizabeth, ME 04107
- Reassigned Medicare billing, Maine enrollment
- 3,140 clinicians in this Medicare group
Wyndmoor, PA 19038
- Reassigned Medicare billing, Pennsylvania enrollment
- 16 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Maine Medical Center
Acute Care Hospitals · Portland, MEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 04106 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 Colm Brennan's NPI number?
The NPI number for Colm Brennan is 1710509906. It was assigned to this individual provider in the NPPES registry on May 11, 2020. The provider is also known as Colm Daly Lcsw.
Where is Colm Brennan located?
Colm Brennan practices at 50 Market Street, Suite 1A Pmb 393, South Portland, ME 04106. The listed phone number is (207) 352-3248.
What is Colm Brennan's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Colm Brennan enrolled in Medicare?
Yes. Colm Brennan 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 Colm Brennan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Colm Brennan reassigns Medicare benefits to 2 organizations: Mainehealth (Cape Elizabeth, ME) and Gksw Crystal Group Associates (Wyndmoor, PA). 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 Colm Brennan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Colm Brennan accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Buckeye Health Plan, Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care and 1 other insurer list Colm Brennan 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.
Is Colm Brennan affiliated with any hospitals?
According to CMS data, Colm Brennan is affiliated with Maine Medical Center.
When was this NPI record last updated?
The NPPES record for Colm Brennan was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.
# Colm J Brennan, LCSW · NPI 1710509906
Clinical provider in South Portland, Maine. Individual provider, active in the CMS NPPES registry since May 11, 2020.
## Identity
- **NPI:** 1710509906 (Entity type: Individual)
- **Enumerated:** May 11, 2020
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** LC19205 (Maine)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 50 MARKET STREET, SUITE 1A, PMB 393, South Portland, ME 04106
- **Phone:** (207) 352-3248
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mainehealth (NPI 1619281698, Cape Elizabeth, ME); Gksw Crystal Group Associates (NPI 1568418721, Wyndmoor, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** November 3, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1710509906) · Data from the CMS NPPES public registry.