MALLORY FRANTSEN
NPI 1326657131
Social Worker - Clinical in Sioux Falls, SD
About Mallory Frantsen NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MALLORY FRANTSEN (NPI 1326657131) is an individual clinical provider in Sioux Falls, South Dakota, licensed in South Dakota (5088) and active in the NPI registry since July 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
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
Mallory Frantsen 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 Reassignment
Medicare enrollment records show Mallory Frantsen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Sioux Falls, SD 57105
- Reassigned Medicare billing, South Dakota enrollment
- 1,277 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 57105 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.
SIOUX FALLS, SD 57105
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 Mallory Frantsen's NPI number?
The NPI number for Mallory Frantsen is 1326657131. It was assigned to this individual provider in the NPPES registry on July 28, 2020.
Where is Mallory Frantsen located?
Mallory Frantsen practices at 2412 S Cliff Ave, Sioux Falls, SD 57105. The listed phone number is (605) 322-4284.
What is Mallory Frantsen's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Mallory Frantsen enrolled in Medicare?
Yes. Mallory Frantsen 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 organization bills Medicare for Mallory Frantsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mallory Frantsen reassigns Medicare benefits to Avera Mckennan (Sioux Falls, SD). 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 Mallory Frantsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mallory Frantsen accept?
Health plans from Ambetter Health, Ambetter from Sunflower Health Plan, Avera Health Plans, Sanford Health Plan and Wellmark Health Plan of Iowa, Inc. and 1 other insurer list Mallory Frantsen 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 Mallory Frantsen was last updated on July 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mallory Frantsen · NPI 1326657131
Clinical provider in Sioux Falls, South Dakota. Individual provider, active in the CMS NPPES registry since July 28, 2020.
## Identity
- **NPI:** 1326657131 (Entity type: Individual)
- **Enumerated:** July 28, 2020
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 5088 (South Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 2412 S CLIFF AVE, Sioux Falls, SD 57105-4031
- **Phone:** (605) 322-4284
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Avera Mckennan (NPI 1699009944, Sioux Falls, SD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** July 28, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1326657131) · Data from the CMS NPPES public registry.