Quick answers
- Where does Derek Granum see patients?
- Medicare's clinician data lists 1 practice location in Sioux Falls, SD. Call before your visit to confirm the address.
- What is Derek Granum's specialty?
- Medicare lists Clinical Social Worker as the primary specialty.
- Does Derek Granum accept Medicare assignment?
- Yes. Medicare's clinician data says Derek Granum accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Derek Granum?
- (605) 774-2204, as listed in official Medicare / NPI Registry data.
- What is Derek Granum's NPI number?
- 1982259230. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Derek Granum is enrolled with Medicare (CMS data updated 2026-10-02).
- 5515 E 18th St, Suite 130Sioux Falls, SD 57110 (605) 774‑2204
Specialties
- Clinical Social Workerprimary
Find other clinicians: Clinical Social Worker, South Dakota →
Other clinical social workers in Sioux Falls
Clinicians with the same Medicare primary specialty in Sioux Falls, SD — not a recommendation.
Clinician information
| Credential | CSW |
|---|---|
| Medical school | Sanford School Of Medicine Of University Of South Dakota |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1982259230 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians