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

John A Mallek, MD

Individual provider Internal Medicine Physician · NPI 1982650248

John A Mallek, MD is an Internal Medicine Physician in Sioux Falls, South Dakota. Licensed in South Dakota. Registered with an NPI since 2006.

Licensed in
SD
In the registry since
2006
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

1210 W 18th St
Sioux Falls, SD 57104-4647
Phone: (605) 328-3485
Fax: (605) 328-3484
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 3520 (SD)

Record details

NPI number1982650248
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 26, 2006
Last updated in NPPESOctober 22, 2007

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