JC
20 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Clarke, Gastroenterologist in Redwood City, CA?
Dr. John Clarke, MD is a Gastroenterologist, who primarily practices in Redwood City, CA with 2 additional practice locations. He has been practicing for over 20 years and is board certified. Dr. Clarke is fluent in English and French, and is currently seeing new patients. Dr. Clarke’s practice accepts Cigna, Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Clarke’s office at (650) 736-5555.
Is Dr. Clarke board certified as a Gastroenterologist?
Yes, Dr. John Clarke, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Clarke speak?
Dr. Clarke and their clinical team can communicate with patients in the following languages:
English
French
What conditions does Dr. Clarke treat?
As a Gastroenterologist, Dr. Clarke 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. Clarke. 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:
- 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:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
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:
- Gastroparesis
- Stomach Disorder
- Delayed Gastric Emptying
- Stomach Paralysis
- Gastric Motility Disorder
ICD-10 Codes:
- K3184: Gastroparesis
Also known as:
- Abdominal Bloating
- Gas
- Gas in the Digestive Tract
- Bloated Stomach
- Swollen Belly
- Gaseous Distension
ICD-10 Codes:
- R140: Abdominal distension (gaseous)
What procedures does Dr. Clarke perform?
As a Gastroenterologist, Dr. Clarke 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. Clarke. 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:
- 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 Tube Placement
- Upper Endoscopy with Injections
- Esophagus Widening Procedure (Endoscopic)
- Esophagus Dilation with Balloon Endoscopy
- Diagnostic Upper Endoscopy with Biopsy
- Flexible Sigmoidoscopy with Biopsy
- Colorectal Cancer Screening Tests
- Upper Endoscopy with Esophageal Dilation
- Flexible Esophagoscopy with Balloon
- EGD with Balloon Widening
- EGD with Catheter Insertion
- Esophagogastroduodenoscopy with Tube
- Flexible Endoscopy for Tube Placement
- EGD with Submucosal Injections
- Esophagogastroduodenoscopy with Injections
- Stomach Scope with Medication
- Esophageal Dilation
- EGD with Dilation
- Upper Endoscopy with Widening
- EGD with Esophageal Dilation
- Upper Endoscopy with Balloon Dilation
- Swallowing Tube Widening
- Esophageal Stricture Dilation
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
- Sigmoid Colon Scope with Biopsy
- Lower Endoscopy with Tissue Sample
- Flexible Sigmoidoscopy and Biopsy
- Rectum and Lower Colon Exam
CPT Codes:
- 43249: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic balloon dilation of esophagus (less than 30 mm diameter)
- 43241: Esophagogastroduodenoscopy, flexible, transoral; with insertion of intraluminal tube or catheter
- 43236: Esophagogastroduodenoscopy, flexible, transoral; with directed submucosal injection(s), any substance
- 43248: Esophagogastroduodenoscopy, flexible, transoral; with insertion of guide wire followed by passage of dilator(s) through esophagus over guide wire
- 43233: Esophagogastroduodenoscopy, flexible, transoral; with dilation of esophagus with balloon (30 mm diameter or larger) (includes fluoroscopic guidance, when performed)
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
Also known as:
- Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Diagnostic Colonoscopy with Biopsy
- 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
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
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
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Also known as:
- Upper Endoscopy with Stomach/Duodenum Dilation
- Upper Endoscopy with Polyp Removal
- EGD with Dilation
- Esophageal Dilation
- Stomach Stricture Widening
- Duodenal Stricture Repair
- EGD with Polypectomy
- Esophagus, Stomach, Duodenum Scope with Removal
- Flexible Endoscopy Tumor Excision
CPT Codes:
- 43245: Esophagogastroduodenoscopy, flexible, transoral; with dilation of gastric/duodenal stricture(s) (eg, balloon, bougie)
- 43251: Esophagogastroduodenoscopy, flexible, transoral; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
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:
- 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
Also known as:
- Esophageal pH and Impedance Test
- Esophageal pH Test
- GERD Test
- Acid Reflux Test
- Esophageal Impedance Monitoring
- 24-Hour pH Study
CPT Codes:
- 91037: Esophageal function test, gastroesophageal reflux test with nasal catheter intraluminal impedance electrode(s) placement, recording, analysis and interpretation;
Also known as:
- Stomach Motility Test
- Gastric Manometry
- Stomach Emptying Study
- Gastric Motility Study
CPT Codes:
- 91020: Gastric motility (manometric) studies
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
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
Does Dr. Clarke accept my insurance?
Dr. Clarke accepts most major insurance plans. Important: Please call our office at (650) 736-5555 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Clarke accept in Redwood City, CA?
Dr. Clarke in Redwood City, 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. Clarke's office located?
What is Dr. Clarke's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Clarke's National Provider Identifier (NPI) number is 1467539643.
What common questions do patients ask about Dr. Clarke?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Clarke
What is Dr. John Clarke's specialty?
Dr. Clarke is a Gastroenterologist near Redwood City, 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. Clarke to book an appointment today.
Is this Dr. John Clarke affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Clarke is affiliated with Stanford Health Care - Stanford Hospital, Stanford Health Care - ValleyCare, Mills-Peninsula Medical Center, California Pacific Medical Center - Van Ness Campus, Novato Community Hospital, California Pacific Medical Center - Mission Bernal Campus 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 John Clarke accepting new patients in Redwood City, CA?
Yes, Dr. John Clarke is accepting new patients at this time.
Does Dr. John Clarke offer online booking?
Please contact Dr. Clarke's office at (650) 736-5555 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Clarke?
Please contact Dr. Clarke's office at (650) 736-5555 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Clarke have?
Dr. John Clarke is certified by the American Board of Internal Medicine.
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