JOSEPH B LEADER M.D.
NPI 1457314940
Pediatrics in Woburn, MA
About Joseph B Leader M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH B LEADER M.D. (NPI 1457314940) is an individual pediatrics provider in Woburn, Massachusetts, licensed in Massachusetts (27824) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Joseph B Leader M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Joseph Leader reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Woburn, MA 01801
- Reassigned Medicare billing, Massachusetts enrollment
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 01801 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.
WOBURN, MA 01801
WOBURN, MA 01801
WOBURN, MA 01801
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 Joseph Leader's NPI number?
The NPI number for Joseph Leader is 1457314940. It was assigned to this individual provider in the NPPES registry on April 7, 2006.
Where is Joseph Leader located?
Joseph Leader practices at 7 Alfred St Baldwin Park II, Woburn, MA 01801. The listed phone number is (781) 933-6236.
What is Joseph Leader's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Joseph Leader enrolled in Medicare?
Yes. Joseph Leader is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Joseph Leader's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Leader reassigns Medicare benefits to Woburn Pediatric Associates (Woburn, 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 Joseph Leader's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Joseph Leader was last updated on January 27, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.