DR. MASON ALEXANDER BRAGG MD, MPH
NPI 1316162407
Emergency Medicine in Providence, RI
About Dr. Mason Alexander Bragg Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MASON ALEXANDER BRAGG MD, MPH (NPI 1316162407) is an individual emergency medicine provider in Providence, Rhode Island, licensed in Rhode Island (LP00952) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS and is a graduate of Columbia University College Of Physicians And Surgeons (2010).
NPPES Registry Identity
Specialties & Licenses
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. Mason Alexander Bragg Md, Mph 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
7Medicare enrollment records show Mason Bragg reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Indio, CA 92201
- Reassigned Medicare billing, California enrollment
- 55 clinicians in this Medicare group
Lancaster, CA 93535
- Reassigned Medicare billing, California enrollment
- 1,939 clinicians in this Medicare group
Glendale, CA 91204
- Reassigned Medicare billing, California enrollment
Bakersfield, CA 93308
- Reassigned Medicare billing, California enrollment
- 48 clinicians in this Medicare group
Los Angeles, CA 90059
- Reassigned Medicare billing, California enrollment
- 63 clinicians in this Medicare group
Los Angeles, CA 90059
- Reassigned Medicare billing, California enrollment
- 67 clinicians in this Medicare group
Long Beach, CA 90813
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Stephen R Shea MD Inc
- 50 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02903 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.
PROVIDENCE, RI 02903
PROVIDENCE, RI 02903
PROVIDENCE, RI 02903
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 Mason Bragg's NPI number?
The NPI number for Mason Bragg is 1316162407. It was assigned to this individual provider in the NPPES registry on April 16, 2007.
Where is Mason Bragg located?
Mason Bragg practices at 593 Eddy St, Providence, RI 02903. The listed phone number is (401) 444-8450.
What is Mason Bragg's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mason Bragg enrolled in Medicare?
Yes. Mason Bragg 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 Mason Bragg's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mason Bragg reassigns Medicare benefits to 7 organizations: Santa Ana Physicians Group, PC (Indio, CA), County Of Los Angeles (Lancaster, CA), Prime Path Medical Group MD (Glendale, CA), Sunshine Physician Services, PC (Bakersfield, CA), Capital Hospitalist Medical Group Inc (Los Angeles, CA) and 2 more organizations, listed in the Medicare section above. 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 Mason Bragg'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 Mason Bragg was last updated on May 12, 2010. 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.
# Dr. Mason Alexander Bragg, MD, MPH · NPI 1316162407
Emergency Medicine physician in Providence, Rhode Island. Individual provider, active in the CMS NPPES registry since April 16, 2007.
## Identity
- **NPI:** 1316162407 (Entity type: Individual)
- **Enumerated:** April 16, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** LP00952 (Rhode Island)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 593 EDDY ST, Providence, RI 02903-4923
- **Phone:** (401) 444-8450 · **Fax:** (401) 444-5088
## 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:** 7 organizations under Medicare reassignment (form CMS-855R): Santa Ana Physicians Group, PC (NPI 1831592187, Indio, CA); County Of Los Angeles (NPI 1205354370, Lancaster, CA); Prime Path Medical Group MD (NPI 1396625612, Glendale, CA); Sunshine Physician Services, PC (NPI 1649725466, Bakersfield, CA); Capital Hospitalist Medical Group Inc (NPI 1992178222, Los Angeles, CA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Columbia University College Of Physicians And Surgeons, class of 2010
## Record status
- **NPPES last updated:** May 12, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1316162407) · Data from the CMS NPPES public registry.