Quick answers
- Which hospitals does Patrick A. Dreis work at?
- Medicare's official clinician data lists Patrick A. Dreis at 4 hospitals: Avera McKennan Hospital & University Health Center, Milbank Area Hospital/Avera Health, Ortonville Area Health Services and Prairie Lakes Healthcare System, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Patrick A. Dreis see patients?
- Medicare's clinician data lists 3 practice locations, including Milbank, SD, Sioux Falls, SD and Watertown, SD. Call before your visit to confirm the address.
- What is Patrick A. Dreis's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Patrick A. Dreis accept Medicare assignment?
- Yes. Medicare's clinician data says Patrick A. Dreis 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 Patrick A. Dreis?
- (605) 886-8471, as listed in official Medicare / NPI Registry data.
- What is Patrick A. Dreis's NPI number?
- 1245203132. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Patrick A. Dreis works
Medicare's Facility Affiliation Data lists Patrick A. Dreis 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
- Milbank Area Hospital/Avera HealthMilbank, SD · Critical Access Hospital · CCN 431326
- Ortonville Area Health ServicesOrtonville, MN · Critical Access Hospital · CCN 241342
- Prairie Lakes Healthcare System, IncWatertown, SD · Acute Care Hospital · CCN 430005
Practice locations
Addresses where Patrick A. Dreis is enrolled with Medicare (CMS data updated 2026-10-02).
- 301 Flynn DrMilbank, SD 57252
- 4405 E 26th StSioux Falls, SD 57103
- 901 4th St NWWatertown, SD 57201 (605) 886‑8471
Group practices
Medicare enrollment lists Patrick A. Dreis as a member of these groups (CMS data updated 2026-10-02).
- Avera McKennan959 clinicians in the group
- Sanford Medical Center857 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in South Dakota
Clinicians with the same Medicare primary specialty in South Dakota — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245203132 |
| 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