ELLEN H. O'DONNELL PH.D.
NPI 1154523983
Psychologist in Boston, MA
About Ellen H. O'donnell Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELLEN H. O'DONNELL PH.D. (NPI 1154523983) is an individual psychologist in Boston, Massachusetts, licensed in Massachusetts (PY 9080) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS.
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 (PECOS)
Ellen H. O'donnell Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Ellen O'donnell reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 128 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 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.
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 Ellen O'donnell's NPI number?
The NPI number for Ellen O'donnell is 1154523983. It was assigned to this individual provider in the NPPES registry on June 4, 2007.
Where is Ellen O'donnell located?
Ellen O'donnell practices at 151 Merrimac Street, 5th Floor Massachusetts General Hospital, Boston, MA 02114. The listed phone number is (617) 643-6017.
What is Ellen O'donnell's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Ellen O'donnell enrolled in Medicare?
Yes. Ellen O'donnell is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ellen O'donnell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ellen O'donnell reassigns Medicare benefits to 3 organizations: The Shriners' Hospital For Children (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA) and The General Hospital Corporation (Boston, 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 Ellen O'donnell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ellen O'donnell accept?
Health plans from AmeriHealth Caritas Next, Harvard Pilgrim Health Care, Taro Health and WellSense Health Plan list Ellen O'donnell 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 Ellen O'donnell was last updated on December 15, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.