DR. BRUCE H HORWITZ MD, PHD
NPI 1942268065
Pediatrics - Pediatric Emergency Medicine in Boston, MA
About Dr. Bruce H Horwitz Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRUCE H HORWITZ MD, PHD (NPI 1942268065) is an individual pediatric emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (79333) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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. Bruce H Horwitz Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Bruce Horwitz reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 1,358 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 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 Bruce Horwitz's NPI number?
The NPI number for Bruce Horwitz is 1942268065. It was assigned to this individual provider in the NPPES registry on May 1, 2006.
Where is Bruce Horwitz located?
Bruce Horwitz practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6624.
What is Bruce Horwitz's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.
Is Bruce Horwitz enrolled in Medicare?
Yes. Bruce Horwitz is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Bruce Horwitz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Bruce Horwitz reassigns Medicare benefits to Children's Hospital Pediatric Associates, Inc (Boston, MA). The 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 Bruce Horwitz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Bruce Horwitz accept?
Health plans from Taro Health list Bruce Horwitz 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 Bruce Horwitz was last updated on August 14, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Bruce H Horwitz, MD, PHD · NPI 1942268065
Pediatric Emergency Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since May 1, 2006.
## Identity
- **NPI:** 1942268065 (Entity type: Individual)
- **Enumerated:** May 1, 2006
- **Primary specialty:** Pediatrics - Pediatric Emergency Medicine · taxonomy 2080P0204X
- **State license:** 79333 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115-5724
- **Phone:** (617) 355-6624 · **Fax:** (617) 730-0335
## 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:** Children's Hospital Pediatric Associates, Inc (NPI 1457306664, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 14, 2007
- **Other identifiers:** Medicare UPIN F98165; Medicare ID-Type Unspecified HO J31120; Medicaid 3136490 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1942268065) · Data from the CMS NPPES public registry.