Dr. Mark A. Casillas
- Gender: Male
- Experience: 15 years
- Graduation year: 2006
- Sole propriator: Yes
- NPI: 1245458082
Dr. Mark A. Casillas JR. M.D.
Colorectal Surgeon
He is located at 1934 Alcoa Highway Bldg D, Suite 370 in Knoxville, TN 37920. Can help patients with the following: Cyst, Esophageal Cancer, Lymphedema, Pancreatitis, Pilonidal Cyst, Sebaceous Cyst. His National Provider Identifier (NPI) number is 1245458082. Appointment can be made via the phone number (865) 305-5335. He is affiliated with 3 practices and 1 hospitals.
Conditions treated
Dr. Mark A. Casillas, being an colorectal surgeon, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Mark A. Casillas.
- Achalasia
- Anal Fissure
- Appendicitis
- Boils
- Cancer
- Colon Cancer
- Crohn's Disease
- Cyst
- Diverticulosis
- Enlarged Spleen
- Esophageal Cancer
- Gallstones
- Gangrene
- Heart Disease
- Hemorrhoids
- Hernia
- Inflammatory Bowel Disease (IBD)
- Lymphedema
- Pancreatitis
- Peptic Ulcer
- Pilonidal Cyst
- Sebaceous Cyst
- Ulcerative Colitis
Procedures Performed by Dr. Mark A. Casillas
Insurances Accepted by Dr. Mark A. Casillas
- Medicare
Medicare Enrollment
Dr. Mark A. Casillas is enrolled to bill Medicare as a Practitioner - Colorectal Surgery (proctology) (also registered under: Practitioner - General Surgery) .
Bills through: University Health System, Inc.
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.
Payments received
Drug payment
| Cubist Pharmaceuticals | $5714 |
| Intuitive Surgical | $1810 |
| Applied Medical | $520 |
Other
| Promotional Speaking or Service | $5700 |
| Food and Beverage | $3409 |
| Travel and Lodging | $1434 |
| Other | $11 |
Studies
Graduated in 2006Additional Specialities
- Surgeon
Affiliated practices
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- Address: Suite D370 1934 Alcoa Highway Knoxville, 37920, TN
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Questions & Answers
Does Dr. Mark A. Casillas have affiliation with practices?
Dr. Mark A. Casillas is affiliated with Women's Care Group. For the full list of practices see this list.
Does Dr. Mark A. Casillas accept patients with Medicare?
Yes, Dr. Mark A. Casillas accepts patients with Medicare.
What conditions does Dr. Mark A. Casillas treat?
Dr. Mark A. Casillas provides treatment for Cyst, Esophageal Cancer, Lymphedema, Pancreatitis, Pilonidal Cyst, Sebaceous Cyst. For the full list see this list.
Where can you meet with Dr. Mark A. Casillas?
Dr. Mark A. Casillas's office is located at 1934 Alcoa Highway Bldg D, Suite 370 in Knoxville, TN 37920.
Has Dr. Mark A. Casillas affiliation with hospitals?
Dr. Mark A. Casillas is affiliated with UNIVERSITY OF TN MEDICAL CENTER.