Donald Kosiak, MD
NPI 1073541215 · Emergency Medicine Physician · Sioux Falls, SD
Donald Kosiak, MD is a Emergency Medicine Physician provider in Sioux Falls, SD (NPI 1073541215).
Provider details
- NPI number
- 1073541215
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 5446 (SD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2007-08-01
Frequently asked questions
- What is Donald Kosiak's NPI number?
- Donald Kosiak's National Provider Identifier (NPI) is 1073541215, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Kosiak's specialty?
- Donald Kosiak is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Kosiak located?
- Donald Kosiak's practice location on file with NPPES is 800 E 21st St, Sioux Falls, SD 57105-1016.
- What is Donald Kosiak's phone number?
- The practice phone number listed in the NPPES registry for Donald Kosiak is (605) 322-2000.
- Is Donald Kosiak's NPI active?
- Yes — Donald Kosiak's NPI (1073541215) is active in the NPPES registry as of the last update on 2007-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.