TRILLIUM PSYCHOLOGICAL SERVICES PLLC
NPI 1053201970
Psychologist in Leonardtown, MD
About Trillium Psychological Services Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TRILLIUM PSYCHOLOGICAL SERVICES PLLC (NPI 1053201970) is a healthcare organization registered as a psychologist in Leonardtown, Maryland and active in the NPI registry since July 2025. The organization lists Michelle Mcdonald, Owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Trillium Psychological Services Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Trillium Psychological Services PLLC, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Trillium Psychological Services PLLC's NPI number?
The NPI number for Trillium Psychological Services PLLC is 1053201970. It was assigned to this organization in the NPPES registry on July 3, 2025.
Where is Trillium Psychological Services PLLC located?
Trillium Psychological Services PLLC is located at 40900 Merchants Ln Unit 207, Leonardtown, MD 20650. The listed phone number is (518) 369-5258.
What is Trillium Psychological Services PLLC's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Trillium Psychological Services PLLC enrolled in Medicare?
Yes. Trillium Psychological Services PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Trillium Psychological Services PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Psychologist) reassigns their Medicare billing to Trillium Psychological Services PLLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Trillium Psychological Services PLLC was last updated on December 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.