22 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Hwang, Gastroenterologist in Stanford, CA?
Dr. Joo Hwang, MD is a Gastroenterologist, who primarily practices in Stanford, CA with 1 additional practice location. He has been practicing for over 22 years and is board certified. Dr. Hwang completed his residency at Univ Of Wa Sch Of Med, Gastroenterology; Univ Of Wa Sch Of Med, Internal Medicine. Dr. Hwang is fluent in English and Korean, and is currently seeing new patients. Dr. Hwang’s practice accepts Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Hwang’s office at (650) 723-4000.
Where did Dr. Hwang go to medical school and complete their residency?
Fellowship: UW - Division of Gastroenterology
Residency: Univ Of Wa Sch Of Med, Gastroenterology; Univ Of Wa Sch Of Med, Internal Medicine | University of Washington Affiliated Hospitals
Medical School: University of Chicago, Pritzker Sch of Med, Chicago Il
Is Dr. Hwang board certified as a Gastroenterologist?
Yes, Dr. Joo Hwang, MD is board certified by the American Board of Internal Medicine , American Board of Internal Medicine since 2005
What languages does Dr. Hwang speak?
Dr. Hwang and their clinical team can communicate with patients in the following languages:
English
Korean
What conditions does Dr. Hwang treat?
As a Gastroenterologist, Dr. Hwang 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. Hwang. 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:
- Achalasia
- Blocked Esophagus
- Esophagus Disorder
- Esophageal Achalasia
- Cardia Achalasia
- Difficulty Swallowing
- Esophageal Obstruction
- Food Pipe Blockage
- Swallowing Difficulty
ICD-10 Codes:
- K220: Achalasia of cardia
- K222: Esophageal obstruction
Also known as:
- Gastroparesis
- Stomach and Duodenum Disorder
- Stomach Disorder
- Delayed Gastric Emptying
- Stomach Paralysis
- Gastric Motility Disorder
- Gastric Conditions
- Duodenal Conditions
- Digestive System Disorders
ICD-10 Codes:
- K3184: Gastroparesis
- K3189: Other diseases of stomach and duodenum
Also known as:
- Other Esophagus Condition
- Esophagus Disorder
- Various esophageal diseases
- Miscellaneous esophagus problems
- Other food pipe issues
ICD-10 Codes:
- K2289: Other specified disease of esophagus
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:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
What procedures does Dr. Hwang perform?
As a Gastroenterologist, Dr. Hwang 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. Hwang. 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 Upper Endoscopy with Biopsy
- EGD with Esophageal Balloon Dilation
- Upper Endoscopy with Injections
- EGD with Endoscopic Ultrasound
- Upper Endoscopy with Mucosal Resection
- Upper Endoscopy with Tube Placement
- Endoscopic GERD Surgery (Fundoplasty)
- Flexible Sigmoidoscopy with Biopsy
- 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
- EGD with Submucosal Injections
- Esophagogastroduodenoscopy with Injections
- Stomach Scope with Medication
- Upper GI Endoscopy with Ultrasound
- EUS (Endoscopic Ultrasound)
- Esophagus, Stomach, Duodenum Ultrasound
- EGD with Mucosal Resection
- Endoscopic Removal of Esophageal Lesion
- Flexible Endoscopy with Tissue Removal
- EGD with Catheter Insertion
- Esophagogastroduodenoscopy with Tube
- Flexible Endoscopy for Tube Placement
- EGD with Fundoplasty
- Anti-Reflux Endoscopy
- Esophagogastroduodenoscopy with Fundoplication
- Transoral Fundoplasty
- Sigmoid Colon Scope with Biopsy
- Lower Endoscopy with Tissue Sample
- Flexible Sigmoidoscopy and Biopsy
- Rectum and Lower Colon Exam
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)
- 43236: Esophagogastroduodenoscopy, flexible, transoral; with directed submucosal injection(s), any substance
- 43237: Esophagogastroduodenoscopy, flexible, transoral; with endoscopic ultrasound examination limited to the esophagus, stomach or duodenum, and adjacent structures
- 43254: Esophagogastroduodenoscopy, flexible, transoral; with endoscopic mucosal resection
- 43241: Esophagogastroduodenoscopy, flexible, transoral; with insertion of intraluminal tube or catheter
- 43210: Esophagogastroduodenoscopy, flexible, transoral; with esophagogastric fundoplasty, partial or complete, includes duodenoscopy when performed
- 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
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:
- Colonoscopy with Polyp Removal
- Colonoscopy with Biopsy
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Tissue Removal
- Colonoscopy with Endoscopic Ultrasound
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Flexible colonoscopy with EMR
- Endoscopic mucosal resection (colon)
- Colon polyp removal during colonoscopy
- EUS Colonoscopy
- Endoscopic Ultrasound of Colon
- Flexible Colonoscopy with EUS
CPT Codes:
- 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
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45390: Colonoscopy, flexible; with endoscopic mucosal resection
- 45391: Colonoscopy, flexible; with endoscopic ultrasound examination limited to the rectum, sigmoid, descending, transverse, or ascending colon and cecum, and adjacent structures
Also known as:
- Upper Endoscopy with Stomach/Duodenum Dilation
- Upper Endoscopy with Tumor Ablation
- Upper Endoscopy with Polyp Removal
- Upper Endoscopy with Ultrasound (EUS)
- EGD with Dilation
- Esophageal Dilation
- Stomach Stricture Widening
- Duodenal Stricture Repair
- EGD with Ablation
- Esophagus, Stomach, Duodenum Scope with Ablation
- Flexible Endoscopy Lesion Treatment
- EGD with Polypectomy
- Esophagus, Stomach, Duodenum Scope with Removal
- Flexible Endoscopy Tumor Excision
- EGD with endoscopic ultrasound
- Esophageal ultrasound
- Stomach ultrasound endoscopy
- Duodenal ultrasound endoscopy
CPT Codes:
- 43245: Esophagogastroduodenoscopy, flexible, transoral; with dilation of gastric/duodenal stricture(s) (eg, balloon, bougie)
- 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)
- 43251: Esophagogastroduodenoscopy, flexible, transoral; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 43259: Esophagogastroduodenoscopy, flexible, transoral; with endoscopic ultrasound examination, including the esophagus, stomach, and either the duodenum or a surgically altered stomach where the jejunum is examined distal to the anastomosis
Also known as:
- POEM Procedure (Esophageal Myotomy)
- Peroral Endoscopic Myotomy
- Esophageal Muscle Cutting
- Achalasia Treatment
- Transoral Esophageal Myotomy
CPT Codes:
- 43497: Lower esophageal myotomy, transoral (ie, peroral endoscopic myotomy [POEM])
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:
- 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:
- ERCP with Bile or Pancreatic Duct Stent Removal
- Endoscopic Retrograde Cholangiopancreatography
- Bile Duct Stent Removal
- Pancreatic Duct Foreign Body Removal
- ERCP Stone Removal
CPT Codes:
- 43275: Endoscopic retrograde cholangiopancreatography (ERCP); with removal of foreign body(s) or stent(s) from biliary/pancreatic duct(s)
Also known as:
- Upper GI Scope with Stent Placement
- EGD with Stent
- Esophageal Stent Placement
- Stomach Stent Insertion
CPT Codes:
- 43266: Esophagogastroduodenoscopy, flexible, transoral; with placement of endoscopic stent (includes pre- and post-dilation and guide wire passage, when performed)
Also known as:
- Upper GI Endoscopy with Ultrasound Biopsy
- Biopsy
- Endoscopy
- Ultrasound
- EGD with EUS-FNA
- Endoscopic Ultrasound Biopsy
- Esophageal/Stomach Biopsy
CPT Codes:
- 43238: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic ultrasound-guided intramural or transmural fine needle aspiration/biopsy(s), (includes endoscopic ultrasound examination limited to the esophagus, stomach or duodenum, and adjacent structures)
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:
- Esophageal Balloon Distension Study
- Esophageal Motility Study
- Esophageal distension test
- Balloon provocation test
- Esophageal pain study
- Esophageal manometry
- Swallowing function test
- GERD test
- Esophageal pressure study
CPT Codes:
- 91040: Esophageal balloon distension study, diagnostic, with provocation when performed
- 91010: Esophageal motility (manometric study of the esophagus and/or gastroesophageal junction) study 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
Does Dr. Hwang accept my insurance?
Dr. Hwang accepts most major insurance plans. Important: Please call our office at (650) 723-4000 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Hwang accept in Stanford, CA?
Dr. Hwang in Stanford, 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
Central California Alliance for Health
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Medicaid
Medicare
Santa Clara Family Health Plan
State of Tennessee
UnitedHealthcare
View All Insurances
Where is Dr. Hwang's office located?
What is Dr. Hwang's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Hwang's National Provider Identifier (NPI) number is 1194815043.
What common questions do patients ask about Dr. Hwang?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Hwang
What is Dr. Joo Hwang's specialty?
Dr. Hwang is a Gastroenterologist near Stanford, 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. Hwang to book an appointment today.
Is this Dr. Joo Hwang affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Hwang is affiliated with Stanford Health Care - Stanford Hospital 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 Joo Hwang accepting new patients in Stanford, CA?
Yes, Dr. Joo Hwang is accepting new patients at this time.
Does Dr. Joo Hwang offer online booking?
Please contact Dr. Hwang's office at (650) 723-4000 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Joo Hwang?
Please contact Dr. Hwang's office at (650) 723-4000 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Joo Hwang have?
Dr. Joo Hwang is certified by the American Board of Internal Medicine.
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