MICHAEL CALLAHAN MD
NPI 1285662668
Radiology - Pediatric Radiology in Boston, MA
About Michael Callahan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL CALLAHAN MD (NPI 1285662668) is an individual pediatric radiology provider in Boston, Massachusetts, licensed in Massachusetts (152743) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Boston Children's Hospital, and is a graduate of State University Of Ny Upstate Medical University (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Michael Callahan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Michael Callahan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 77 clinicians in this Medicare group
Boston, MA 02111
- Reassigned Medicare billing, Massachusetts enrollment
- 132 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Boston Children's Hospital
Childrens · Boston, MAOther 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 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Michael Callahan's NPI number?
The NPI number for Michael Callahan is 1285662668. It was assigned to this individual provider in the NPPES registry on June 28, 2006.
Where is Michael Callahan located?
Michael Callahan practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-8382.
What is Michael Callahan's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Pediatric Radiology, with taxonomy code 2085P0229X.
Is Michael Callahan enrolled in Medicare?
Yes. Michael Callahan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Michael Callahan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Callahan reassigns Medicare benefits to 2 organizations: Children's Hospital Radiology Foundation, Inc. (Boston, MA) and Pratt Radiology Associates, 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 Michael Callahan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Callahan affiliated with any hospitals?
According to CMS data, Michael Callahan is affiliated with Boston Children's Hospital.
When was this NPI record last updated?
The NPPES record for Michael Callahan was last updated on December 10, 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.
# Michael Callahan, MD · NPI 1285662668
Pediatric Radiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 28, 2006.
## Identity
- **NPI:** 1285662668 (Entity type: Individual)
- **Enumerated:** June 28, 2006
- **Primary specialty:** Radiology - Pediatric Radiology · taxonomy 2085P0229X
- **State license:** 152743 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115-5724
- **Phone:** (617) 355-8382
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Children's Hospital Radiology Foundation, Inc. (NPI 1487681912, Boston, MA); Pratt Radiology Associates, Inc (NPI 1154361780, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of Ny Upstate Medical University, class of 1995
## Record status
- **NPPES last updated:** December 10, 2009
- **Other identifiers:** Medicare ID-Type Unspecified 2003228 (MA); Medicare ID-Type Unspecified A35102 (MA); Medicare UPIN H80215 (MA); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1285662668) · Data from the CMS NPPES public registry.