EY
18 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Yoon, Gastroenterologist in Fullerton, CA?
Dr. Eugene Yoon, MD is a Gastroenterologist, who primarily practices in Fullerton, CA with 2 additional practice locations. He has been practicing for over 18 years and is board certified. Dr. Yoon completed his residency at Univ Ca Irvine Med Ctr, Internal Medicine. Dr. Yoon is fluent in English and Spanish, and is currently seeing new patients. Dr. Yoon’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Yoon’s office at (714) 446-5831.
Where did Dr. Yoon go to medical school and complete their residency?
Residency: Univ Ca Irvine Med Ctr, Internal Medicine
Medical School: University of Va Sch of Med, Charlottesville Va
Is Dr. Yoon board certified as a Gastroenterologist?
Yes, Dr. Eugene Yoon, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Yoon speak?
Dr. Yoon and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Yoon treat?
As a Gastroenterologist, Dr. Yoon 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. Yoon. 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:
- Chronic Stomach Inflammation
- Stomach Disorder
- Gastritis & Gastropathy
- Chronic gastritis
- Long-term stomach inflammation
- Persistent stomach lining inflammation
ICD-10 Codes:
- K2950: Unspecified chronic gastritis without bleeding
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal polyps
- Bowel polyps
- Intestinal polyps
ICD-10 Codes:
- K635: Polyp of colon
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:
- Rectal Bleeding
- Gastrointestinal Bleeding
- Gastrointestinal (GI) Bleeding
- Anal Bleeding
- Blood in Stool
- Lower GI Bleed
ICD-10 Codes:
- K625: Hemorrhage of anus and rectum
Also known as:
- Benign Ascending Colon Polyp
- Benign Tumor
- Colonic Polyps
- Colon Polyps
- Non-cancerous ascending colon growth
- Ascending colon adenoma
- Ascending colon benign tumor
ICD-10 Codes:
- D122: Benign neoplasm of ascending colon
Also known as:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
What procedures does Dr. Yoon perform?
As a Gastroenterologist, Dr. Yoon 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. Yoon. 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:
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Colonoscopy with Biopsy
- Colonoscopy with Polyp/Tumor Removal
- Colonoscopy with Tissue Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Flexible colonoscopy with ablation
- Colon polyp removal
- Colon tumor destruction
- Therapeutic colonoscopy
- Flexible colonoscopy with EMR
- Endoscopic mucosal resection (colon)
- Colon polyp removal during colonoscopy
CPT Codes:
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
- 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)
- 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
- Esophagus Widening Procedure (Endoscopic)
- Upper Endoscopy with Varices Banding
- Colonoscopy with Injections
- Upper Endoscopy with Injections
- Upper Endoscopy with Mucosal Resection
- Colonoscopy
- Colorectal Cancer Screening Tests
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
- Esophageal Dilation
- EGD with Dilation
- Upper Endoscopy with Widening
- EGD with Band Ligation
- Esophageal Varices Banding
- Gastric Varices Treatment
- Flexible Colonoscopy with Injection
- Colon Scope with Medication
- Therapeutic Colonoscopy
- EGD with Submucosal Injections
- Esophagogastroduodenoscopy with Injections
- Stomach Scope with Medication
- EGD with Mucosal Resection
- Endoscopic Removal of Esophageal Lesion
- Flexible Endoscopy with Tissue Removal
CPT Codes:
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 43248: Esophagogastroduodenoscopy, flexible, transoral; with insertion of guide wire followed by passage of dilator(s) through esophagus over guide wire
- 43244: Esophagogastroduodenoscopy, flexible, transoral; with band ligation of esophageal/gastric varices
- 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
- 43236: Esophagogastroduodenoscopy, flexible, transoral; with directed submucosal injection(s), any substance
- 43254: Esophagogastroduodenoscopy, flexible, transoral; with endoscopic mucosal resection
Also known as:
- ERCP with Bile or Pancreatic Duct Stent Removal
- ERCP with Sphincterotomy
- ERCP with Bile Duct Dilation
- ERCP with Stent Placement
- Endoscopic Retrograde Cholangiopancreatography
- Bile Duct Stent Removal
- Pancreatic Duct Foreign Body Removal
- ERCP Stone Removal
- Endoscopic retrograde cholangiopancreatography
- Bile duct scope
- Pancreatic duct scope
- Papillotomy
- Endoscopic Retrograde Cholangiopancreatography with Dilation
- Bile Duct Widening via ERCP
- Pancreatic Duct Balloon Dilation
- Endoscopic Retrograde Cholangiopancreatography with Stent
- Bile Duct Stent Placement via ERCP
- Pancreatic Duct Stent Placement via ERCP
CPT Codes:
- 43275: Endoscopic retrograde cholangiopancreatography (ERCP); with removal of foreign body(s) or stent(s) from biliary/pancreatic duct(s)
- 43262: Endoscopic retrograde cholangiopancreatography (ERCP); with sphincterotomy/papillotomy
- 43277: Endoscopic retrograde cholangiopancreatography (ERCP); with trans-endoscopic balloon dilation of biliary/pancreatic duct(s) or of ampulla (sphincteroplasty), including sphincterotomy, when performed, each duct
- 43274: Endoscopic retrograde cholangiopancreatography (ERCP); with placement of endoscopic stent into biliary or pancreatic duct, including pre- and post-dilation and guide wire passage, when performed, including sphincterotomy, when performed, each stent
Also known as:
- ERCP with Gallstone Removal
- ERCP
- Endoscopic Gallstone Removal
- Biliary Duct Stone Removal
- Pancreatic Duct Cleaning
CPT Codes:
- 43264: Endoscopic retrograde cholangiopancreatography (ERCP); with removal of calculi/debris from biliary/pancreatic duct(s)
Also known as:
- Upper Endoscopy with Polyp Removal
- Upper Endoscopy with Tumor Ablation
- Upper Endoscopy with Stomach/Duodenum Dilation
- EGD with Polypectomy
- Esophagus, Stomach, Duodenum Scope with Removal
- Flexible Endoscopy Tumor Excision
- EGD with Ablation
- Esophagus, Stomach, Duodenum Scope with Ablation
- Flexible Endoscopy Lesion Treatment
- EGD with Dilation
- Esophageal Dilation
- Stomach Stricture Widening
- Duodenal Stricture Repair
CPT Codes:
- 43251: Esophagogastroduodenoscopy, flexible, transoral; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 43270: Esophagogastroduodenoscopy, flexible, transoral; with ablation of tumor(s), polyp(s), or other lesion(s) (includes pre- and post-dilation and guide wire passage, when performed)
- 43245: Esophagogastroduodenoscopy, flexible, transoral; with dilation of gastric/duodenal stricture(s) (eg, balloon, bougie)
Also known as:
- Stopping Bleeding in Esophagus, Stomach, or Duodenum
- EGD with Bleeding Control
- Upper GI Endoscopy for Bleeding
- Gastric Bleeding Treatment
CPT Codes:
- 43255: Esophagogastroduodenoscopy, flexible, transoral; with control of bleeding, any method
Also known as:
- Feeding Tube Placement with Endoscopy
- PEG Tube Placement
- Gastrostomy Tube Insertion
- EGD with Feeding Tube
- Percutaneous Endoscopic Gastrostomy
CPT Codes:
- 43246: Esophagogastroduodenoscopy, flexible, transoral; with directed placement of percutaneous gastrostomy tube
Also known as:
- Upper Endoscopy for Foreign Body Removal
- EGD for Foreign Body
- Gastroscopy for Object Removal
- Esophagogastroduodenoscopy for Foreign Body
CPT Codes:
- 43247: Esophagogastroduodenoscopy, flexible, transoral; with removal of foreign body(s)
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
Does Dr. Yoon accept my insurance?
Dr. Yoon accepts most major insurance plans. Important: Please call our office at (714) 446-5831 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Yoon accept in Fullerton, CA?
Dr. Yoon in Fullerton, 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
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Medicare
State of Tennessee
UnitedHealthcare
View All Insurances
Where is Dr. Yoon's office located?
Dr. Eugene Yoon's Primary Practice
1837 Sunny Crest Dr
Fullerton, CA 92835
(714) 446-5831
What is Dr. Yoon's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Yoon's National Provider Identifier (NPI) number is 1861618449.
What common questions do patients ask about Dr. Yoon?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Yoon
What is Dr. Eugene Yoon's specialty?
Dr. Yoon is a Gastroenterologist near Fullerton, 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. Yoon to book an appointment today.
Is this Dr. Eugene Yoon affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Yoon is affiliated with Providence St. Jude Medical Center, Providence St. Jude Medical Center, UCI Medical Center, Orange County Global Medical Center, Kaiser Permanente Fontana Medical Center 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
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 Eugene Yoon accepting new patients in Fullerton, CA?
Yes, Dr. Eugene Yoon is accepting new patients at this time.
Does Dr. Eugene Yoon offer online booking?
Please contact Dr. Yoon's office at (714) 446-5831 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Eugene Yoon?
Please contact Dr. Yoon's office at (714) 446-5831 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Eugene Yoon have?
Dr. Eugene Yoon is certified by the American Board of Internal Medicine.
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