DR. CARI ELAINE MATTHEWS M.D.
NPI 1871656967
Emergency Medicine in Great Falls, MT
About Dr. Cari Elaine Matthews M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CARI ELAINE MATTHEWS M.D. (NPI 1871656967) is an individual emergency medicine provider in Great Falls, Montana, licensed in Washington (60789984) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS, is affiliated with Peterson Regional Medical Center, and is a graduate of Uniformed Services Uhs Fe Hebert School Of Med (2003).
NPPES Registry Identity
Specialties & Licenses
Other Names 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 and accepts Medicare assignment
Dr. Cari Elaine Matthews M.d. 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
13Medicare enrollment records show Cari Matthews reassigns Medicare billing to 13 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Arlington, WA 98223
- Reassigned Medicare billing, Washington enrollment
- 519 clinicians in this Medicare group
Edmonds, WA 98026
- Reassigned Medicare billing, Washington enrollment
- 106 clinicians in this Medicare group
Friday Harbor, WA 98250
- Reassigned Medicare billing, Washington enrollment
- 97 clinicians in this Medicare group
Mount Shasta, CA 96067
- Reassigned Medicare billing, California enrollment
- 61 clinicians in this Medicare group
Quincy, CA 95971
- Reassigned Medicare billing, California enrollment
- 48 clinicians in this Medicare group
Merced, CA 95340
- Reassigned Medicare billing, California enrollment
- 141 clinicians in this Medicare group
Sonoma, CA 95476
- Reassigned Medicare billing, California enrollment
- 112 clinicians in this Medicare group
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 43 clinicians in this Medicare group
Tulsa, OK 74136
- Reassigned Medicare billing, Oklahoma enrollment
- 226 clinicians in this Medicare group
Austin, TX 78705
- Reassigned Medicare billing, Texas enrollment
- 1,511 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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Peterson Regional Medical Center
Acute Care Hospitals · Kerrville, TXBaptist Medical Center
Acute Care Hospitals · San Antonio, TXBaptist Neighborhood Hospital Thousand Oaks
Acute Care Hospitals · San Antonio, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 59405 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.
GREAT FALLS, MT 59405
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 Cari Matthews's NPI number?
The NPI number for Cari Matthews is 1871656967. It was assigned to this individual provider in the NPPES registry on December 19, 2006. The provider is also known as Dr. Cari Elaine Slafsky M.D..
Where is Cari Matthews located?
Cari Matthews practices at 1101 26th St S, Great Falls, MT 59405. The listed phone number is (406) 731-8888.
What is Cari Matthews's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Cari Matthews enrolled in Medicare?
Yes. Cari Matthews 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 Cari Matthews's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cari Matthews reassigns Medicare benefits to 13 organizations: Northwest Emergency Physicians LLC (Arlington, WA), Cep America LLC (Edmonds, WA), Peacehealth (Friday Harbor, WA), Mount Eddy Emergency Physicians Medical Group, Inc. (Mount Shasta, CA), Chavez Emergency Physicians Medical Group, Inc. (Quincy, CA) and 8 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 Cari Matthews's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cari Matthews accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Sendero Health Plans, Local Nonprofit list Cari Matthews 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.
Is Cari Matthews affiliated with any hospitals?
According to CMS data, Cari Matthews is affiliated with Peterson Regional Medical Center, Baptist Medical Center and Baptist Neighborhood Hospital Thousand Oaks.
When was this NPI record last updated?
The NPPES record for Cari Matthews was last updated on April 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Cari Elaine Matthews, M.D. · NPI 1871656967
Emergency Medicine physician in Great Falls, Montana. Individual provider, active in the CMS NPPES registry since December 19, 2006.
## Identity
- **NPI:** 1871656967 (Entity type: Individual)
- **Enumerated:** December 19, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 60789984 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1101 26TH ST S, Great Falls, MT 59405-5161
- **Phone:** (406) 731-8888 · **Fax:** (406) 731-8876
## 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:** 13 organizations under Medicare reassignment (form CMS-855R): Northwest Emergency Physicians LLC (NPI 1235172370, Arlington, WA); Cep America LLC (NPI 1447484274, Edmonds, WA); Peacehealth (NPI 1487917233, Friday Harbor, WA); Mount Eddy Emergency Physicians Medical Group, Inc. (NPI 1316299787, Mount Shasta, CA); Chavez Emergency Physicians Medical Group, Inc. (NPI 1689045015, Quincy, CA); and 8 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Uniformed Services Uhs Fe Hebert School Of Med, class of 2003
## Record status
- **NPPES last updated:** April 2, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1871656967) · Data from the CMS NPPES public registry.