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

Dr. John Joseph Lassegard, MD

Individual provider Family Medicine Physician · NPI 1386672806

Dr. John Joseph Lassegard, MD is a Family Medicine Physician in Rapid City, 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

211 Founders Park Dr Ste 3 Founders Park Clinic
Rapid City, SD 57701
Phone: (605) 791-5959
Fax: (605) 791-5960
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 3437 (SD)

Record details

NPI number1386672806
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 30, 2006
Last updated in NPPESOctober 29, 2015

Other providers in Rapid City