MRS. CAITLIN MARY KEENAN TRILLA
NPI 1104229442
Nurse Practitioner - Family in Boston, MA
About Mrs. Caitlin Mary Keenan Trilla NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. CAITLIN MARY KEENAN TRILLA (NPI 1104229442) is an individual family provider in Boston, Massachusetts, licensed in Massachusetts (2283366) and active in the NPI registry since October 2014. She is enrolled in Medicare PECOS, is affiliated with Mount Auburn Hospital, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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. Caitlin Mary Keenan Trilla 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 Caitlin Trilla reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dorchester, MA 02125
- Reassigned Medicare billing, Massachusetts enrollment
- 31 clinicians in this Medicare group
Arlington, MA 02476
- Reassigned Medicare billing, Massachusetts enrollment
- 10 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 4
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Auburn Hospital
Acute Care Hospitals · Cambridge, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02122 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
DORCHESTER, MA 02122
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 Caitlin Trilla's NPI number?
The NPI number for Caitlin Trilla is 1104229442. It was assigned to this individual provider in the NPPES registry on October 1, 2014. The provider is also known as Caitlin Mary Keenan.
Where is Caitlin Trilla located?
Caitlin Trilla practices at 398 Neponset Ave, Boston, MA 02122. The listed phone number is (617) 282-3200.
What is Caitlin Trilla's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Caitlin Trilla enrolled in Medicare?
Yes. Caitlin Trilla 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 Caitlin Trilla's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Caitlin Trilla reassigns Medicare benefits to 2 organizations: Harbor Health Services Inc (Dorchester, MA) and Family Practice Group PC (Arlington, 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 Caitlin Trilla's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Caitlin Trilla affiliated with any hospitals?
According to CMS data, Caitlin Trilla is affiliated with Mount Auburn Hospital.
When was this NPI record last updated?
The NPPES record for Caitlin Trilla was last updated on October 1, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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. Caitlin Mary Keenan Trilla · NPI 1104229442
Family physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since October 1, 2014.
## Identity
- **NPI:** 1104229442 (Entity type: Individual)
- **Enumerated:** October 1, 2014
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 2283366 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 398 NEPONSET AVE, Boston, MA 02122-3134
- **Phone:** (617) 282-3200
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Harbor Health Services Inc (NPI 1659330496, Dorchester, MA); Family Practice Group PC (NPI 1801953849, Arlington, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** October 1, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1104229442) · Data from the CMS NPPES public registry.