DR. WILLIAM P MEEHAN III MD
NPI 1558304584
Pediatrics - Pediatric Emergency Medicine in Boston, MA
About Dr. William P Meehan Iii Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM P MEEHAN III MD (NPI 1558304584) is an individual pediatric emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (227817) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of Harvard Medical School (2002).
NPPES Registry Identity
Specialties & Licenses 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. William P Meehan Iii Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show William Meehan 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
- 1,358 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 57 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 William Meehan's NPI number?
The NPI number for William Meehan is 1558304584. It was assigned to this individual provider in the NPPES registry on June 14, 2006.
Where is William Meehan located?
William Meehan practices at 300 Longwood Ave Children's Hospital, Emergency Medicine, Boston, MA 02115. The listed phone number is (617) 355-5324.
What is William Meehan's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.
Is William Meehan enrolled in Medicare?
Yes. William Meehan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Meehan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Meehan reassigns Medicare benefits to 2 organizations: Children's Hospital Pediatric Associates, Inc (Boston, MA) and Children's Sports Medicine Foundation 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 William Meehan'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 William Meehan was last updated on August 17, 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. William P Meehan III, MD · NPI 1558304584
Pediatric Emergency Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 14, 2006.
## Identity
- **NPI:** 1558304584 (Entity type: Individual)
- **Enumerated:** June 14, 2006
- **Primary specialty:** Pediatrics - Pediatric Emergency Medicine · taxonomy 2080P0204X
- **State license:** 227817 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, CHILDREN'S HOSPITAL, EMERGENCY MEDICINE, Boston, MA 02115-5724
- **Phone:** (617) 355-5324
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **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 Pediatric Associates, Inc (NPI 1457306664, Boston, MA); Children's Sports Medicine Foundation Inc. (NPI 1740216811, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2002
## Record status
- **NPPES last updated:** August 17, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1558304584) · Data from the CMS NPPES public registry.