Quick answers
- Which hospitals does Mark Anthony A. Diaz work at?
- Medicare's official clinician data lists Mark Anthony A. Diaz at 5 hospitals: Avera McKennan Hospital & University Health Center, Avera Sacred Heart Hospital, Avera St Lukes, Avera St Mary's Hospital and Lakes Regional Healthcare. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark Anthony A. Diaz see patients?
- Medicare's clinician data lists 3 practice locations, including Hartington, NE, Tyndall, SD and Sioux Falls, SD. Call before your visit to confirm the address.
- What is Mark Anthony A. Diaz's specialty?
- Medicare lists Infectious Disease as the primary specialty.
- Does Mark Anthony A. Diaz accept Medicare assignment?
- Yes. Medicare's clinician data says Mark Anthony A. Diaz 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.
- Does Mark Anthony A. Diaz offer telehealth?
- Medicare's clinician data says Mark Anthony A. Diaz offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark Anthony A. Diaz?
- (605) 589-2158, as listed in official Medicare / NPI Registry data.
- What is Mark Anthony A. Diaz's NPI number?
- 1417364563. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark Anthony A. Diaz works
Medicare's Facility Affiliation Data lists Mark Anthony A. Diaz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Avera McKennan Hospital & University Health CenterSioux Falls, SD · Acute Care Hospital · CCN 430016
- Avera Sacred Heart HospitalYankton, SD · Acute Care Hospital · CCN 430012
- Avera St LukesAberdeen, SD · Acute Care Hospital · CCN 430014
- Avera St Mary's HospitalPierre, SD · Acute Care Hospital · CCN 430015
- Lakes Regional HealthcareSpirit Lake, IA · Acute Care Hospital · CCN 160124
Practice locations
Addresses where Mark Anthony A. Diaz is enrolled with Medicare (CMS data updated 2026-10-02).
- 405 W Darlene StHartington, NE 68739
- 410 W 16th AveTyndall, SD 57066 (605) 589‑2158
- 6709 S Minnesota Ave, Suite 102Sioux Falls, SD 57108 (605) 322‑7250
Group practices
Medicare enrollment lists Mark Anthony A. Diaz as a member of these groups (CMS data updated 2026-10-02).
- Avera McKennan959 clinicians in the group
- Sacred Heart Health Services153 clinicians in the group
- St Michael's Hospital, Inc.17 clinicians in the group
Specialties
- Infectious Diseaseprimary
Other infectious disease doctors in Nebraska
Clinicians with the same Medicare primary specialty in Nebraska — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1417364563 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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