47 Years of Experience
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Wallis, Gastroenterologist in Crystal River, FL?
Dr. Barrett Wallis, MD is a Gastroenterologist, who primarily practices in Crystal River, FL. He has been practicing for over 47 years and is board certified. Dr. Wallis completed his residency at Rutgers. He is a member of the Citrus County Medical Society. Dr. Wallis is fluent in English, French, and Spanish, and is currently seeing new patients. Dr. Wallis’s practice accepts Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Wallis’s office at (352) 564-3900.
Where did Dr. Wallis go to medical school and complete their residency?
Residency: Rutgers
Is Dr. Wallis board certified as a Gastroenterologist?
Yes, Dr. Barrett Wallis, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Wallis speak?
Dr. Wallis and their clinical team can communicate with patients in the following languages:
English
French
Spanish
What conditions does a Gastroenterologist like Dr. Wallis typically treat?
As a Gastroenterologist, Dr. Wallis 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. Wallis. 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 here.
Also known as:
- Abdominal Pain
- Stomach Ache
- Belly Pain
- Stomach Pain
ICD-10 Codes:
- R109: Unspecified abdominal pain
Also known as:
- Diarrhea
- Loose stools
- Runny poop
- Frequent bowel movements
ICD-10 Codes:
- R197: Diarrhea, unspecified
Also known as:
- Constipation
- Difficulty Passing Stool
- Infrequent Bowel Movements
- Hard Stools
ICD-10 Codes:
- K5900: Constipation, unspecified
Also known as:
- Esophagus Inflammation
- Esophagus Disorder
- Esophagitis
- Inflamed Esophagus
- Sore Esophagus
ICD-10 Codes:
- K2080: Other esophagitis without bleeding
What procedures does a Gastroenterologist like Dr. Wallis typically perform?
As a Gastroenterologist, Dr. Wallis 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. Wallis. 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 here.
Also known as:
- Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Colonoscopy with Polyp/Tumor Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible Colonoscopy with Biopsy
- Colorectal Polyp Removal
- Hot Biopsy Colonoscopy
- Flexible colonoscopy with ablation
- Colon polyp removal
- Colon tumor destruction
- Therapeutic colonoscopy
CPT Codes:
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45384: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by hot biopsy forceps
- 45388: Colonoscopy, flexible; with ablation of tumor(s), polyp(s), or other lesion(s) (includes pre- and post-dilation and guide wire passage, when performed)
Also known as:
- Upper Endoscopy with Biopsy
- Biopsy
- Endoscopy
- EGD with Biopsy
- Gastroscopy with Biopsy
- Esophagogastroduodenoscopy with Biopsy
CPT Codes:
- 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple
Also known as:
- EGD with Esophageal Balloon Dilation
- Upper Endoscopy with Esophageal Dilation
- Flexible Esophagoscopy with Balloon
- EGD with Balloon Widening
CPT Codes:
- 43249: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic balloon dilation of esophagus (less than 30 mm diameter)
Also known as:
- Vein Needle or Catheter Insertion
- Venipuncture
- IV Insertion
- Intravenous Access
- Catheter Placement Vein
CPT Codes:
- 36000: Introduction of needle or intracatheter, vein
Does Dr. Wallis accept my insurance?
Dr. Wallis accepts most major insurance plans. Important: Please call our office at (352) 564-3900 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Wallis accept in Crystal River, FL?
Dr. Wallis in Crystal River, FL accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Centene Corporation
Cigna Group
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Federal government of the United States
Guidewell Mutual Holding Corporation
Humana
Medicare
UnitedHealth Group
View All Insurances
Where is Dr. Wallis' office located?
Dr. Barrett Wallis' Primary Practice
6152 W Corporate Oaks Dr
Crystal River, FL 34429
(352) 564-3900
Ratings & Reviews
5.0
Overall rating
Based on 2 reviews
Attentiveness
100% of patients felt that their time spent with the doctor was meaningful and impactful and that any follow ups were addressed quickly
Wait Times
70% of patients were satisfied with the wait time
Diagnosis
100% of patients were satisfied with the doctor's diagnosis and explanation of their condition
Patients give Dr. Barrett Wallis an Excellent overall experience rating of 5 out of 5 stars. Dr. Wallis has been rated and reviewed by 2 patients. These ratings are based on a variety of factors, including the amount of time patients spent with Dr. Wallis, his bedside manner, appointment waiting time, friendliness of the office staff, clarity of diagnosis, and more.
Read Patient ReviewsRecognitions
Memberships & Associations
Citrus County Medical Society
President
What is Dr. Wallis's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Wallis's National Provider Identifier (NPI) number is 1740220938.
What common questions do patients ask about Dr. Wallis?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Wallis
What is Dr. Barrett Wallis's specialty?
Dr. Wallis is a Gastroenterologist near Crystal River, FL.
What does a Gastroenterologist do?
An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs.
Is this Dr. Barrett Wallis affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Wallis is affiliated with Hca Florida Oak Hill Hospital, Hca Florida Citrus Hospital which are a Castle Connolly Top Hospitals. 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 Gastroenterologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Gastroenterologist. 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 Barrett Wallis accepting new patients in Crystal River, FL?
Yes, Dr. Barrett Wallis is accepting new patients at this time.
Does Dr. Barrett Wallis offer online booking?
Please contact Dr. Wallis's office at (352) 564-3900 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Barrett Wallis?
Please contact Dr. Wallis's office at (352) 564-3900 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Barrett Wallis have?
Dr. Barrett Wallis is certified by the American Board of Internal Medicine.
<section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>