Quick answers
- Where does Mackenzie Mertz see patients?
- Medicare's clinician data lists 2 practice locations, including Sioux Falls, SD. Call before your visit to confirm the address.
- What is Mackenzie Mertz's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Mackenzie Mertz accept Medicare assignment?
- Yes. Medicare's clinician data says Mackenzie Mertz 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 Mackenzie Mertz?
- (605) 328-1850, as listed in official Medicare / NPI Registry data.
- What is Mackenzie Mertz's NPI number?
- 1023426806. 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 Mackenzie Mertz is enrolled with Medicare (CMS data updated 2026-10-02).
- 3401 W 49th StSioux Falls, SD 57106 (605) 328‑1850
- 4405 E 26th StSioux Falls, SD 57103
Group practices
Medicare enrollment lists Mackenzie Mertz as a member of this group (CMS data updated 2026-10-02).
- Sanford Medical Center857 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Sioux Falls
Clinicians with the same Medicare primary specialty in Sioux Falls, SD — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023426806 |
| 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