Dr. Donald J. Kosiak
- Gender: Male
- Sole propriator: No
- NPI: 1073541215
Dr. Donald J. Kosiak JR. MD
Emergency Physician
He is located at 800 East 21st Street Emergency Dept in Sioux Falls, SD 57105. Can help patients with the following: Altitude Sickness, Broken Bone, Hematoma, Insect Stings, Prescription Refill, Whiplash. His National Provider Identifier (NPI) number is 1073541215. Appointment can be made via the phone number (605) 322-2000.
Conditions treated
Dr. Donald J. Kosiak, being an emergency physician, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Donald J. Kosiak.
- Acute Pain
- Altitude Sickness
- Angina
- Brain Aneurysm
- Brain Hemorrhage
- Broken Bone
- Bruises
- Choking
- Common Cold
- Coronavirus
- Costochondritis
- Febrile Seizure
- Fever
- Frostbite
- General Care
- Headache
- Hematoma
- Influenza
- Insect Stings
- Laceration
- Migraine
- Nausea and Vomiting
- Phlebitis and Thrombophlebitis
- Prescription Refill
- Whiplash
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Donald J. Kosiak as in-network for the following 2026 plans.
Health plans
Wellmark of South Dakota, Inc.
Network data as of Sep 8, 2026, as reported by the insurer.
Show all 7 plans from Wellmark of South Dakota, Inc.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Wellmark Bronze HDHP EPO HSA Qualified (2 plan variants) | EPO · Expanded Bronze | Bluerx Essentials | Accepting new patients |
| Wellmark Bronze Traditional EPO (2 plan variants) | EPO · Expanded Bronze | Bluerx Essentials | Accepting new patients |
| Wellmark Gold Traditional EPO (2 plan variants) | EPO · Gold | Bluerx Essentials | Accepting new patients |
| Wellmark Silver Traditional EPO (2 plan variants) | EPO · Silver | Bluerx Essentials | Accepting new patients |
| Wellmark Standard Bronze EPO (2 plan variants) | EPO · Expanded Bronze | Bluerx Essentials | Accepting new patients |
| Wellmark Standard Gold EPO (2 plan variants) | EPO · Gold | Bluerx Essentials | Accepting new patients |
| Wellmark Standard Silver EPO (2 plan variants) | EPO · Silver | Bluerx Essentials | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Donald J. Kosiak is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Looking for more Emergency Physicians?
Out of the 40 emergency physicians in this region, here are 10 randomly selected ones for you to explore.
- Gender: Male
- Address: 1305 West 18th Street Sioux Falls, 57105, SD
- Gender: Male
- Address: 1305 West 18th Street Sioux Falls, 57105, SD
- Gender: Male
- Address: 1325 South Cliff Avenue Sioux Falls, 57105, SD
- Gender: Male
- Address: 1305 West 18th Street Sioux Falls, 57105, SD
- Gender: Male
- Address: 1305 West 18th Street Sioux Falls, 57105, SD
- Gender: Male
- Address: 1305 West 18th Street Sioux Falls, 57105, SD
- Gender: Male
- Address: 1305 West 18th Street Sioux Falls, 57105, SD
- Gender: Male
- Address: 1325 South Cliff Avenue Sioux Falls, 57105, SD
- Gender: Male
- Address: C/O Emergency Department 1325 South Cliff Avenue Sioux Falls, 57105, SD
- Gender: Male
- Address: 1305 West 18th Street Sioux Falls, 57105, SD
Questions & Answers
Does Dr. Donald J. Kosiak accept insurance?
Dr. Donald J. Kosiak is listed in-network for 7 ACA Marketplace (Obamacare/HealthCare.gov) plans from Wellmark of South Dakota, Inc.. See the Marketplace plans section for details.
Where can you meet with Dr. Donald J. Kosiak?
Dr. Donald J. Kosiak's office is located at 800 East 21st Street Emergency Dept in Sioux Falls, SD 57105.
What conditions does Dr. Donald J. Kosiak treat?
Dr. Donald J. Kosiak provides treatment for Altitude Sickness, Broken Bone, Hematoma, Insect Stings, Prescription Refill, Whiplash. For the full list see this list.