DR. BRETT S MATHERS DO
NPI 1417440785
Internal Medicine in Huron, SD
About Dr. Brett S Mathers Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRETT S MATHERS DO (NPI 1417440785) is an individual internal medicine provider in Huron, South Dakota, licensed in South Dakota (12927) and active in the NPI registry since June 2018. He is enrolled in Medicare PECOS, is affiliated with Avera Marshall Regional Medical Ctr, and maintains a secondary practice location in Sierra Vista.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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. Brett S Mathers Do 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
3Medicare enrollment records show Brett Mathers reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Huron, SD 57350
- Reassigned Medicare billing, South Dakota enrollment
- 120 clinicians in this Medicare group
Ivanhoe, MN 56142
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1568401016 (Minnesota)
- 260 clinicians in this Medicare group
Marshall, MN 56258
- Reassigned Medicare billing, Minnesota enrollment
- 92 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Avera Marshall Regional Medical Ctr
Critical Access Hospitals · Marshall, MNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 57350 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
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 Brett Mathers's NPI number?
The NPI number for Brett Mathers is 1417440785. It was assigned to this individual provider in the NPPES registry on June 12, 2018.
Where is Brett Mathers located?
Brett Mathers practices at 172 4th St SE, Huron, SD 57350. The listed phone number is (605) 353-6200.
What is Brett Mathers's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Brett Mathers enrolled in Medicare?
Yes. Brett Mathers 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 Brett Mathers's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brett Mathers reassigns Medicare benefits to 3 organizations: Huron Regional Medical Center Inc (Huron, SD), Avera Marshall (Ivanhoe, MN) and Rural Health Care, Inc (Marshall, MN). 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 Brett Mathers's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Brett Mathers affiliated with any hospitals?
According to CMS data, Brett Mathers is affiliated with Avera Marshall Regional Medical Ctr.
When was this NPI record last updated?
The NPPES record for Brett Mathers was last updated on September 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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. Brett S Mathers, DO · NPI 1417440785
Internal Medicine physician in Huron, South Dakota. Individual provider, active in the CMS NPPES registry since June 12, 2018.
## Identity
- **NPI:** 1417440785 (Entity type: Individual)
- **Enumerated:** June 12, 2018
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 12927 (South Dakota)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 172 4TH ST SE, Huron, SD 57350-2590
- **Phone:** (605) 353-6200 · **Fax:** (605) 353-6300
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Huron Regional Medical Center Inc (NPI 1154312429, Huron, SD); Avera Marshall (NPI 1902246168, Ivanhoe, MN); Rural Health Care, Inc (NPI 1740944602, Marshall, MN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Midwestern University, Chicago College Of Osteopathic Med, class of 2018
## Record status
- **NPPES last updated:** September 22, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1417440785) · Data from the CMS NPPES public registry.