51 Years of Experience
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Hahn, Gastroenterologist in Santa Barbara, CA?
Dr. William Hahn, MD is a Gastroenterologist, who primarily practices in Santa Barbara, CA. He has been practicing for over 51 years and is board certified. Dr. Hahn graduated from University of Washington School of Medicine and completed his residency at Univ Ca San Diego Med Ctr, Gastroenterology; Univ Ca San Diego Med Ctr, Internal Medicine. Dr. Hahn is fluent in English and Spanish, and is currently seeing new patients. Dr. Hahn’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Hahn’s office at (805) 681-1761.
Where did Dr. Hahn go to medical school and complete their residency?
Fellowship: University of California At San Diego
Residency: Univ Ca San Diego Med Ctr, Gastroenterology; Univ Ca San Diego Med Ctr, Internal Medicine | UCSD-Kaiser San Diego
Medical School: University of Wa Sch of Med, Seattle Wa | University of Washington School of Medicine
Is Dr. Hahn board certified as a Gastroenterologist?
Yes, Dr. William Hahn, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Hahn speak?
Dr. Hahn and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does a Gastroenterologist like Dr. Hahn typically treat?
As a Gastroenterologist, Dr. Hahn 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. Hahn. 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 here.
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:
- Upper Middle Abdominal Pain
- Abdominal Pain
- Epigastric pain
- Pain below breastbone
- Upper stomach pain
ICD-10 Codes:
- R1013: Epigastric pain
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal polyps
- Bowel polyps
- Intestinal polyps
ICD-10 Codes:
- K635: Polyp of colon
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:
- Diarrhea
- Loose stools
- Runny poop
- Frequent bowel movements
ICD-10 Codes:
- R197: Diarrhea, unspecified
What procedures does a Gastroenterologist like Dr. Hahn typically perform?
As a Gastroenterologist, Dr. Hahn 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. Hahn. 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 here.
Also known as:
- Colonoscopy with Polyp Removal
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible Colonoscopy
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
CPT Codes:
- 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)
- 45380: Colonoscopy, 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:
- EGD with Esophageal Balloon Dilation
- 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 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)
- 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:
- Flexible Sigmoidoscopy
- Colorectal Cancer Screening Tests
- Sigmoidoscopy
- Lower colon exam
- Flexible colon scope
- Rectum and lower colon check
CPT Codes:
- 45330: Sigmoidoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Does Dr. Hahn accept my insurance?
Dr. Hahn accepts most major insurance plans. Important: Please call our office at (805) 681-1761 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Hahn accept in Santa Barbara, CA?
Dr. Hahn in Santa Barbara, 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
Centene Corporation
Cigna Group
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Medicare
Other TPA
State of California
UnitedHealth Group
View All Insurances
Where is Dr. Hahn's office located?
Dr. William Hahn's Primary Practice
317 W Pueblo St
Santa Barbara, CA 93105
(805) 681-1761
What is Dr. Hahn's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Hahn's National Provider Identifier (NPI) number is 1033227582.
What common questions do patients ask about Dr. Hahn?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Hahn
What is Dr. William Hahn's specialty?
Dr. Hahn is a Gastroenterologist near Santa Barbara, 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. William Hahn affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Hahn is affiliated with Santa Barbara Cottage 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
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 William Hahn accepting new patients in Santa Barbara, CA?
Yes, Dr. William Hahn is accepting new patients at this time.
Does Dr. William Hahn offer online booking?
Please contact Dr. Hahn's office at (805) 681-1761 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with William Hahn?
Please contact Dr. Hahn's office at (805) 681-1761 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. William Hahn have?
Dr. William Hahn is certified by the American Board of Internal Medicine.
<section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>