ROBYN ALYSSA ELLIS
NPI 1225787161
Psychologist - Clinical in Belmont, MA
About Robyn Alyssa Ellis NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBYN ALYSSA ELLIS (NPI 1225787161) is an individual clinical provider in Belmont, Massachusetts, licensed in Massachusetts (PSY10000555) and active in the NPI registry since March 2022. 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)
Robyn Alyssa Ellis is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Robyn Ellis reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Belmont, MA 02478
- Reassigned Medicare billing, Massachusetts enrollment
- 422 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02478 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.
BELMONT, MA 02478
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 Robyn Ellis's NPI number?
The NPI number for Robyn Ellis is 1225787161. It was assigned to this individual provider in the NPPES registry on March 19, 2022.
Where is Robyn Ellis located?
Robyn Ellis practices at 115 Mill St, Belmont, MA 02478. The listed phone number is (617) 855-2000.
What is Robyn Ellis's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Robyn Ellis enrolled in Medicare?
Yes. Robyn Ellis is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Robyn Ellis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robyn Ellis reassigns Medicare benefits to 3 organizations: The Mclean Hospital Corporation (Belmont, 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 Robyn Ellis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Robyn Ellis accept?
Health plans from Harvard Pilgrim Health Care list Robyn Ellis 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 Robyn Ellis was last updated on October 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.
# Robyn Alyssa Ellis · NPI 1225787161
Clinical provider in Belmont, Massachusetts. Individual provider, active in the CMS NPPES registry since March 19, 2022.
## Identity
- **NPI:** 1225787161 (Entity type: Individual)
- **Enumerated:** March 19, 2022
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** PSY10000555 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 115 MILL ST, Belmont, MA 02478-1048
- **Phone:** (617) 855-2000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): The Mclean Hospital Corporation (NPI 1114979580, Belmont, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 22, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1225787161) · Data from the CMS NPPES public registry.