HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / TN

MARK A CASILLAS JR., MD

COLORECTAL SURGERY (PROCTOLOGY)

Graduated: 2006

Also: GENERAL SURGERY

Offers telehealth

NPI: 1245458082

Practice Locations (4)

UNIVERSITY HEALTH SYSTEM, INC.

1924 ALCOA HWY

KNOXVILLE, TN 379201511

8653056740

UNIVERSITY HEALTH SYSTEM, INC.

1924 ALCOA HWY, U56

KNOXVILLE, TN 379201511

8653059081

UNIVERSITY HEALTH SYSTEM, INC.

1930 ALCOA HWY

KNOXVILLE, TN 379201510

UNIVERSITY HEALTH SYSTEM, INC.

1930 ALCOA HWY 235

KNOXVILLE, TN 379201510

8653054670

Source: CMS National Downloadable File, September 2026.

MARK CASILLAS, MD | HealthCareAtlasUSA