Skip To Content

We're committed to helping you find the best care at Sanford Health.


Cassie Hajek, MD

  • Accepting New Patients

Education:

  • Undergraduate
    University of Michigan (Ann Arbor, MI)
  • Graduate School
    University of Michigan (Ann Arbor, MI)
  • Medical School
    University of South Dakota (Vermillion, SD)
  • Residency
    Alber Einstein College of Medicine Montefiore Medical Center, Bronx, NY
  • Internship
    Internal Medicine, Exempla St. Joseph, Denver, CO
  • Fellowship
    UCLA Intercampus Medical Genetics Training Program, Los Angeles, CA
  • Board Certifications
    ABIM, ABMGG board-eligible

Adult Genetic conditions including cancer predisposition, connective tissue disease, cardiogenetics, and neurogenetics.

To offer professional care in the area of genetic evaluation while ensuring patient needs and expectations are met.

Gene variants predisposing to common diseases such as heart disease and diabetes.

English

Cassie Hajek MD received her medical degree in 2008 from the University of South Dakota. She completed her residency in internal medicine at the Albert Einstein College of Medicine Motefiore Medical Center. She joined privated practice in New York City immediately after residency. After spending a couple of years in Manhattan, she and her husband, Matt, decided to return to their roots in the Midwest to be closer to family. They love Sioux Falls and are very happy to call it home. Cassie and Matt will be moving to Los Angeles for her to complete fellowship in Medical Genetics and look forward to returning after two years.

Dr. Hajek is married with one child. She enjoys spending time with her family biking on the Sioux Falls bike trails, cooking, and traveling.

Additional Practice Locations

Sanford Internal Medicine Clinic

1321 W. 22nd St.
Sioux Falls, SD 57105

Get Directions

Hours:

M–F:

Phone

(605) 404-4000

Fax

(605) 312-9091

Sanford Executive Health Center

1205 S Grange Avenue
Suite 303
Sioux Falls, SD 57105

Get Directions

Hours:

M–F:

Phone

(605) 328-7090

Fax

(605) 328-7091