Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Karnes, Gastroenterologist in Orange, CA?
Dr. William Karnes, MD is a Gastroenterologist, who primarily practices in Orange, CA with 1 additional practice location. He is board certified. Dr. Karnes completed his residency at Brooke Army Medical Center. He is a member of the American Society of Clinical Pathologists, College of American Pathologists, American Medical Association, North Carolina Medical Society, and Mecklenburg County Medical Society. Dr. Karnes is fluent in English and Spanish, and is currently seeing new patients. Dr. Karnes’s practice accepts Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Karnes’s office at (888) 717-4463.
What are Areas of Expertise for Dr. Karnes?
Dr. William Karnes, MD is a highly-rated, board-certified Gastroenterologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Karnes empowers patients to confidently navigate their health journey, specializing in Celiac Disease, Colon Cancer Screening, Colonoscopy, Endoscopy, Esophageal Cancer, Gastroesophageal Reflux Disease (GERD), Gastrointestinal Disorders, Irritable Bowel Syndrome, or comprehensive wellness support. Serving the Orange/CA community, Dr. Karnes is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Karnes go to medical school and complete their residency?
Fellowship: National Naval Medical Center | Bethesda Naval Hospital, Hematopathology, Maryland, USA
Residency: Brooke Army Medical Center
Is Dr. Karnes board certified as a Gastroenterologist?
Yes, Dr. William Karnes, MD is board certified by the American Board of Pathology since 2010, American Board of Pathology since 1989
What languages does Dr. Karnes speak?
Dr. Karnes and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Karnes treat?
As a Gastroenterologist, Dr. Karnes 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. Karnes. 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.
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:
- Acid Reflux
- GERD with Esophagitis
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Eosinophilic Esophagitis
- Gastroesophageal Reflux
- Heartburn
- Indigestion
- Reflux Esophagitis
- Acid Reflux Esophagus Inflammation
- Heartburn with Esophagus Damage
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
- K2100: Gastro-esophageal reflux disease with esophagitis, without bleeding
Also known as:
- Iron Deficiency Anemia
- Anemia
- Iron
- Anemia from Iron Lack
- Low Iron Anemia
- Sideropenic Anemia
ICD-10 Codes:
- D509: Iron deficiency anemia, unspecified
Also known as:
- Diarrhea
- Loose stools
- Runny poop
- Frequent bowel movements
ICD-10 Codes:
- R197: Diarrhea, unspecified
Also known as:
- Upper Middle Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R1013: Epigastric pain
Also known as:
- Stomach and Duodenum Disorder
- Stomach Disorder
- Gastric Conditions
- Duodenal Conditions
- Digestive System Disorders
ICD-10 Codes:
- K3189: Other diseases of stomach and duodenum
What procedures does Dr. Karnes perform?
As a Gastroenterologist, Dr. Karnes 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. Karnes. 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.
Also known as:
- Colonoscopy with Polyp Removal
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Biopsy
- Colonoscopy with Tissue Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- 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
- Flexible colonoscopy with EMR
- Endoscopic mucosal resection (colon)
- Colon polyp removal during colonoscopy
CPT Codes:
- 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
- 45390: Colonoscopy, flexible; with endoscopic mucosal resection
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:
- Diagnostic Upper Endoscopy with Biopsy
- EGD with Esophageal Balloon Dilation
- Flexible Sigmoidoscopy with Biopsy
- Upper Endoscopy with Injections
- Colorectal Cancer Screening Tests
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
- Upper Endoscopy with Esophageal Dilation
- Flexible Esophagoscopy with Balloon
- EGD with Balloon Widening
- Sigmoid Colon Scope with Biopsy
- Lower Endoscopy with Tissue Sample
- Flexible Sigmoidoscopy and Biopsy
- Rectum and Lower Colon Exam
- EGD with Submucosal Injections
- Esophagogastroduodenoscopy with Injections
- Stomach Scope with Medication
CPT Codes:
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 43249: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic balloon dilation of esophagus (less than 30 mm diameter)
- 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
- 43236: Esophagogastroduodenoscopy, flexible, transoral; with directed submucosal injection(s), any substance
Also known as:
- Gastrostomy Tube Replacement
- G-tube Change
- Percutaneous Gastrostomy Tube Exchange
- Stomach Feeding Tube Replacement
CPT Codes:
- 43762: Replacement of gastrostomy tube, percutaneous, includes removal, when performed, without imaging or endoscopic guidance; not requiring revision of gastrostomy tract
Also known as:
- Flexible Sigmoidoscopy
- Colorectal Cancer Screening Tests
- Sigmoidoscopy
- Lower colon exam
- Flexible colon scope
- Rectum and lower colon check
CPT Codes:
- 45330: Sigmoidoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Also known as:
- Capsule Endoscopy
- Pill Camera
- Wireless Capsule Endoscopy
- Small Bowel Capsule Endoscopy
- Intestinal Imaging Pill
CPT Codes:
- 91110: Gastrointestinal tract imaging, intraluminal (eg, capsule endoscopy), esophagus through ileum, with interpretation and report
Also known as:
- Wireless Esophageal pH Test
- Esophageal pH Test
- Bravo pH Test
- Esophageal Reflux Monitoring
- Acid Reflux Test
CPT Codes:
- 91035: Esophagus, gastroesophageal reflux test; with mucosal attached telemetry pH electrode placement, recording, analysis and interpretation
Also known as:
- Swallowing Study (Videofluoroscopy)
- Dysphagia Tests
- Videofluoroscopic Swallowing Study (VFSS)
- Modified Barium Swallow (MBS)
- Dysphagia Evaluation
CPT Codes:
- 92611: Motion fluoroscopic evaluation of swallowing function by cine or video recording
Does Dr. Karnes accept my insurance?
Dr. Karnes accepts most major insurance plans. Important: Please call our office at (888) 717-4463 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Karnes accept in Orange, CA?
Dr. Karnes in Orange, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Shield of California
CalOptima
Centene
Crown Cork and Seal Company
HealthComp
HealthSmart
Medicare
Monarch HealthCare
UnitedHealthcare
View All Insurances
Where is Dr. Karnes' office located?
Dr. William Karnes' Primary Practice
101 The City Dr S Bldg 22C
Orange, CA 92868
(888) 717-4463
Dr. William Karnes' Practice 2
1640 Newport Blvd Ste 350
Costa Mesa, CA 92627
(949) 386-5260
Recognitions
Memberships & Associations
American Society of Clinical Pathologists
Member
College of American Pathologists
Member
American Medical Association
Member
North Carolina Medical Society
Member
Mecklenburg County Medical Society
Member
Awards
President, Mecklenburg County Medical Society
Top Doctors, CharlotteMagazine
Charlotte Magazine
What is Dr. Karnes's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Karnes's National Provider Identifier (NPI) number is 1881652998.
What common questions do patients ask about Dr. Karnes?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Karnes
What is Dr. William Karnes's specialty?
Dr. Karnes is a Gastroenterologist near Orange, CA. 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. Contact Dr. Karnes to book an appointment today.
Is this Dr. William Karnes affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Karnes is affiliated with UCI 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
Where can I learn more about Gastroenterologist?
Explore Gastroenterologist with 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 William Karnes accepting new patients in Orange, CA?
Yes, Dr. William Karnes is accepting new patients at this time.
Does Dr. William Karnes offer online booking?
Please contact Dr. Karnes's office at (888) 717-4463 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with William Karnes?
Please contact Dr. Karnes's office at (888) 717-4463 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. William Karnes have?
Dr. William Karnes is certified by the American Board of Pathology.
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