Mallory Frantsen
NPI 1326657131 · Clinical Social Worker · Sioux Falls, SD
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mallory Frantsen is a Clinical Social Worker provider in Sioux Falls, SD (NPI 1326657131).
Provider details
- NPI number
- 1326657131
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 5088 (SD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-07-28
- Last updated
- 2020-07-28
- Certified
- 2020-07-28
Frequently asked questions
- What is Mallory Frantsen's NPI number?
- Mallory Frantsen's National Provider Identifier (NPI) is 1326657131, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Frantsen's specialty?
- Mallory Frantsen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mallory Frantsen located?
- Mallory Frantsen's practice location on file with NPPES is 2412 S Cliff Ave, Sioux Falls, SD 57105-4031.
- What is Mallory Frantsen's phone number?
- The practice phone number listed in the NPPES registry for Mallory Frantsen is (605) 322-4284.
- Does Mallory Frantsen accept Medicare?
- Mallory Frantsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mallory Frantsen's NPI active?
- Yes — Mallory Frantsen's NPI (1326657131) is active in the NPPES registry as of the last update on 2020-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.