MC
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Casillas, Surgeon in Knoxville, TN?
Dr. Mark Casillas, MD is a Surgeon, who primarily practices in Knoxville, TN. Dr. Casillas is fluent in English, and is currently seeing new patients. Dr. Casillas’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Casillas’s office at (865) 305-5335.
What languages does Dr. Casillas speak?
Dr. Casillas and their clinical team can communicate with patients in the following languages:
English
What conditions does a Surgeon like Dr. Casillas typically treat?
As a Surgeon, Dr. Casillas diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Casillas. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Other Pre-Procedure Examination
- Various pre-op checks
- Miscellaneous pre-surgery exams
- Other pre-treatment assessments
ICD-10 Codes:
- Z01818: Encounter for other preprocedural examination
Also known as:
- Colon Cancer Screening
- Health Screening
- Colorectal Cancer Screening (PDQ®)
- Screening Tests to Detect Colorectal Cancer and Polyps
- Tests to Detect Colorectal Cancer and Polyps
- Colorectal Cancer Screening
- Colonoscopy Screening
- Bowel Cancer Screening
ICD-10 Codes:
- Z1211: Encounter for screening for malignant neoplasm of colon
Also known as:
- Colorectal Cancer
- Rectal cancer
- Colon cancer
- Bowel cancer
- Malignant neoplasm of rectum
ICD-10 Codes:
- C20: Malignant neoplasm of rectum
Also known as:
- Second Degree Hemorrhoids
- Third Degree Hemorrhoids
- Hemorrhoids
- Internal hemorrhoids that prolapse
- Grade 2 hemorrhoids
- Moderate hemorrhoids
- Prolapsed hemorrhoids
- Grade 3 hemorrhoids
- Severe hemorrhoids
ICD-10 Codes:
- K641: Second degree hemorrhoids
- K642: Third degree hemorrhoids
Also known as:
- Anal Fistula
- Anal Disorder
- Fistulas
- Perianal Fistula
- Fistula-in-Ano
- Abnormal Anal Tract
ICD-10 Codes:
- K603: Anal fistula
Also known as:
- Ileostomy Care
- Ostomy
- Ileostomy Management
- Small Intestine Stoma Care
- Ileostomy Follow-up
ICD-10 Codes:
- Z432: Encounter for attention to ileostomy
Also known as:
- Complete Bowel Incontinence
- Bowel Incontinence
- Full fecal incontinence
- Total loss of bowel control
- Severe accidental bowel leakage
ICD-10 Codes:
- R159: Full incontinence of feces
What procedures does a Surgeon like Dr. Casillas typically perform?
As a Surgeon, Dr. Casillas performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Casillas. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Colonoscopy with Polyp Removal
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Biopsy
- Colorectal Polyp Removal
- Hot Biopsy Colonoscopy
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible Colonoscopy
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
CPT Codes:
- 45384: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by hot biopsy forceps
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
Also known as:
- Removal of Multiple Hemorrhoids
- Hemorrhoidectomy
- Internal and External Hemorrhoid Surgery
- Piles Removal Surgery
CPT Codes:
- 46260: Hemorrhoidectomy, internal and external, 2 or more columns/groups;
Also known as:
- Anal Biopsy
- Rectal Wall Biopsy
- Anorectal Biopsy
- Anal Tissue Sample
CPT Codes:
- 45100: Biopsy of anorectal wall, anal approach (eg, congenital megacolon)
Also known as:
- Extensive Anal Lesion Removal
- Anal wart removal
- Destruction of anal condyloma
- Anal papilloma treatment
- Anal lesion ablation
CPT Codes:
- 46924: Destruction of lesion(s), anus (eg, condyloma, papilloma, molluscum contagiosum, herpetic vesicle), extensive (eg, laser surgery, electrosurgery, cryosurgery, chemosurgery)
Also known as:
- Anal Fistula Surgery
- Fistulectomy
- Fistulotomy
- Anal Fistula Repair
CPT Codes:
- 46280: Surgical treatment of anal fistula (fistulectomy/fistulotomy); transsphincteric, suprasphincteric, extrasphincteric or multiple, including placement of seton, when performed
Also known as:
- Removal of Rectal Tumor
- Transanal Rectal Tumor Excision
- Partial Thickness Rectal Tumor Removal
- Rectal Lesion Excision
CPT Codes:
- 45171: Excision of rectal tumor, transanal approach; not including muscularis propria (ie, partial thickness)
Does Dr. Casillas accept my insurance?
Dr. Casillas accepts most major insurance plans. Important: Please call our office at (865) 305-5335 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Casillas accept in Knoxville, TN?
Dr. Casillas in Knoxville, TN accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Blue Cross Blue Shield of Michigan
Cigna Group
Elevance Health Inc. (formerly Anthem)
Medicare
View All Insurances
Where is Dr. Casillas' office located?
What is Dr. Casillas's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Casillas's National Provider Identifier (NPI) number is 1245458082.
What common questions do patients ask about Dr. Casillas?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Casillas
What is Dr. Mark Casillas's specialty?
Dr. Casillas is a Surgeon near Knoxville, TN.
What does a Surgeon do?
General surgeons are experts in diagnosing and managing surgical conditions which includes preoperative, operative, and postoperative care, as well as addressing complications. Their expertise include the areas such as the alimentary tract, breast, abdomen, skin and soft tissue, endocrine system, head and neck, pediatric surgery, surgical critical care, surgical oncology, trauma, burns, and vascular surgery. General surgeons increasingly utilize minimally invasive and endoscopic techniques to provide proper care. In addition to this, many general surgeons have expertise in transplantation, plastic, and cardiothoracic surgery.
Is this Dr. Mark Casillas affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Casillas is affiliated with The University Of Tennessee Medical Center which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Surgeon?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Surgeon. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Mark Casillas accepting new patients in Knoxville, TN?
Yes, Dr. Mark Casillas is accepting new patients at this time.
Does Dr. Mark Casillas offer online booking?
Please contact Dr. Casillas's office at (865) 305-5335 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Mark Casillas?
Please contact Dr. Casillas's office at (865) 305-5335 for information regarding telehealth appointment availability or for scheduling assistance.
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