Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Justin T. Kastl, MD

Individual provider Pediatrics Physician · NPI 1588873335

Justin T. Kastl, MD is a Pediatrics Physician in Sioux Falls, South Dakota. Licensed in Iowa and South Dakota. Registered with an NPI since 2007.

Licensed in
IA, SD
In the registry since
2007
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1600 W 22nd St
Sioux Falls, SD 57105-1521
Phone: (605) 312-1000
Fax: (605) 312-1001
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Nephrology Physician (primary) Taxonomy 2080P0210X · Licence 8921 (SD)
Pediatrics Physician Taxonomy 208000000X · Licence R-7820 (IA)
Pediatrics Physician Taxonomy 208000000X · Licence 8921 (SD)

Record details

NPI number1588873335
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 21, 2007
Last updated in NPPESMay 22, 2025
Certification dateMay 22, 2025

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