Accepting patients
Online booking
Telehealth
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Kao, Gastroenterologist in San Carlos, CA?
Dr. Roger Kao, MD is a Gastroenterologist, who primarily practices in San Carlos, CA. He is board certified. Dr. Kao completed his residency at Univ Il Coll Of Med, Internal Medicine. Dr. Kao is fluent in English, Chinese, Italian, and Spanish, and is currently seeing new patients. Dr. Kao’s practice accepts Cigna, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Kao’s office at (650) 596-8800.
Where did Dr. Kao go to medical school and complete their residency?
Fellowship: University of Illinois At Chicago / College of Medicine
Residency: Univ Il Coll Of Med, Internal Medicine | University of Illinois At Chicago / College of Medicine
Is Dr. Kao board certified as a Gastroenterologist?
Yes, Dr. Roger Kao, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Kao speak?
Dr. Kao and their clinical team can communicate with patients in the following languages:
Chinese
English
Italian
Spanish
What conditions does Dr. Kao treat?
As a Gastroenterologist, Dr. Kao 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. Kao. 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:
- Hemorrhoids
- Piles
- Anal veins
- Swollen rectal veins
ICD-10 Codes:
- K648: Other hemorrhoids
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:
- Change in Bowel Habits
- Bowel Movement
- Altered Bowel Habits
- Irregular Bowel Movements
- Changes in Pooping
ICD-10 Codes:
- R194: Change in bowel habit
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Abdominal Bloating
- Gas
- Gas in the Digestive Tract
- Bloated Stomach
- Swollen Belly
- Gaseous Distension
ICD-10 Codes:
- R140: Abdominal distension (gaseous)
Also known as:
- Abdominal Pain
- Stomach Ache
- Belly Pain
- Stomach Pain
ICD-10 Codes:
- R109: Unspecified abdominal pain
What procedures does Dr. Kao perform?
As a Gastroenterologist, Dr. Kao 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. Kao. 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 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 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:
- Hemorrhoid Removal with Rubber Band Ligation
- Rubber Band Ligation for Hemorrhoids
- Internal Hemorrhoid Ligation
- Banding of Hemorrhoids
- Hemorrhoid Banding
CPT Codes:
- 46221: Hemorrhoidectomy, internal, by rubber band ligation(s)
Also known as:
- Diagnostic Upper Endoscopy with Biopsy
- Colonoscopy with Injections
- Flexible Sigmoidoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
- Flexible Colonoscopy with Injection
- Colon Scope with Medication
- Therapeutic Colonoscopy
- 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)
- 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
- 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple
Does Dr. Kao accept my insurance?
Dr. Kao accepts most major insurance plans. Important: Please call our office at (650) 596-8800 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Kao accept in San Carlos, CA?
Dr. Kao in San Carlos, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Alignment Health Plan
All Other Third Party
Blue Shield of California
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Express Scripts
Health Plan of San Mateo
Hill Physicians Medical Group
UnitedHealthcare
View All Insurances
Would you like to schedule an appointment with Dr. Roger Kao?
Dr. Kao has appointments available at his San Carlos, CA office. Please select a date and time below.
What is Dr. Kao's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Kao's National Provider Identifier (NPI) number is 1982786133.
What common questions do patients ask about Dr. Kao?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Kao
What is Dr. Roger Kao's specialty?
Dr. Kao is a Gastroenterologist near San Carlos, 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. Kao to book an appointment today.
Is this Dr. Roger Kao affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Kao is affiliated with Sequoia Hospital, Mills-Peninsula Medical Center, Stanford Health Care - Stanford Hospital, California Pacific Medical Center - Van Ness 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 Roger Kao accepting new patients in San Carlos, CA?
Yes, Dr. Roger Kao is accepting new patients at this time.
Does Dr. Roger Kao offer online booking?
Yes, you can use online booking to schedule an appointment with Dr. Kao, or call (650) 596-8800 for more information.
How can I make an appointment with Roger Kao?
Yes, Dr. Kao offers telehealth appointments. You can use online booking to schedule a telehealth appointment with Dr. Kao, or call (650) 596-8800 for more information.
Which board certifications does Dr. Roger Kao have?
Dr. Roger Kao is certified by the American Board of Internal Medicine.
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