DR. CHRISTINE BARRETT SIEBERG MADARIAGA PHD
NPI 1578854238
Psychologist in Boston, MA
About Dr. Christine Barrett Sieberg Madariaga Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTINE BARRETT SIEBERG MADARIAGA PHD (NPI 1578854238) is an individual psychologist in Boston, Massachusetts, licensed in Massachusetts (9339) and active in the NPI registry since April 2011. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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)
Dr. Christine Barrett Sieberg Madariaga Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Christine Sieberg Madariaga reassigns Medicare billing to 2 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
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 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.
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.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 Christine Sieberg Madariaga's NPI number?
The NPI number for Christine Sieberg Madariaga is 1578854238. It was assigned to this individual provider in the NPPES registry on April 28, 2011. The provider is also known as Dr. Christine B. Sieberg Phd.
Where is Christine Sieberg Madariaga located?
Christine Sieberg Madariaga practices at Massachusetts General Hospital One Bowdoin Square, Suite 100, Boston, MA 02114. The listed phone number is (617) 724-7792.
What is Christine Sieberg Madariaga's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Christine Sieberg Madariaga enrolled in Medicare?
Yes. Christine Sieberg Madariaga is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Christine Sieberg Madariaga's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christine Sieberg Madariaga reassigns Medicare benefits to 2 organizations: The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (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 Christine Sieberg Madariaga's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christine Sieberg Madariaga accept?
Health plans from Harvard Pilgrim Health Care, Taro Health and WellSense Health Plan list Christine Sieberg Madariaga 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 Christine Sieberg Madariaga was last updated on January 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.