KEIRA MASON MD
NPI 1598744799
Anesthesiology - Pediatric Anesthesiology in Boston, MA
About Keira Mason Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KEIRA MASON MD (NPI 1598744799) is an individual pediatric anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (82061) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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)
Keira Mason Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Keira Mason 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
- 86 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02115 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.
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 Keira Mason's NPI number?
The NPI number for Keira Mason is 1598744799. It was assigned to this individual provider in the NPPES registry on January 16, 2006.
Where is Keira Mason located?
Keira Mason practices at 300 Longwood Ave Deptartment Of Anesthesia, Boston, MA 02115. The listed phone number is (617) 789-2782.
What is Keira Mason's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.
Is Keira Mason enrolled in Medicare?
Yes. Keira Mason is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Keira Mason's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Keira Mason reassigns Medicare benefits to Chmc Anesthesia Foundation 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 Keira Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Keira Mason accept?
Health plans from Blue Cross and Blue Shield of Oklahoma and Taro Health list Keira Mason 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 Keira Mason was last updated on October 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.
# Keira Mason, MD · NPI 1598744799
Pediatric Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since January 16, 2006.
## Identity
- **NPI:** 1598744799 (Entity type: Individual)
- **Enumerated:** January 16, 2006
- **Primary specialty:** Anesthesiology - Pediatric Anesthesiology · taxonomy 207LP3000X
- **State license:** 82061 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, DEPTARTMENT OF ANESTHESIA, Boston, MA 02115-5724
- **Phone:** (617) 789-2782
## 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:** Chmc Anesthesia Foundation Inc (NPI 1831268754, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 6, 2025
- **Other identifiers:** Medicaid 3147053 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1598744799) · Data from the CMS NPPES public registry.