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 Kaiser Permanente, Medicaid, Medicare 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 a Gastroenterologist like Dr. Clarke typically 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. Learn more about our claims-based healthcare methodology.
Also known as:
- Acid Reflux
- GERD
- Acid Reflux (GER & GERD) in Adults
- Acid Reflux (GER & GERD) in Children
- Acid Reflux (GER & GERD) in Infants
- Gastroesophageal Reflux
- Heartburn
- Indigestion
ICD-10 Codes:
- K219: Gastro-esophageal reflux disease without esophagitis
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
What procedures does a Gastroenterologist like Dr. Clarke typically 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. Learn more about our claims-based healthcare methodology.
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
- 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
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
Also known as:
- Colonoscopy with Biopsy
- Colonoscopy with Polyp 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
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
Also known as:
- Esophageal Balloon Distension Study
- Esophageal distension test
- Balloon provocation test
- Esophageal pain study
CPT Codes:
- 91040: Esophageal balloon distension study, diagnostic, with provocation when performed
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
Cigna Group
CVS Health (formerly Aetna)
Medicaid
Medicare
Santa Cruz County
State of California
UnitedHealth Group
Unknown
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.
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. 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, California Pacific Medical Center - Van Ness Campus, Novato Community Hospital, Mills-Peninsula Medical Center, 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
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 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.
Other Gastroenterologist Near Redwood City, CA
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