DR
21 Years of Experience
Accepting patients
Online booking
Telehealth
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Rengstorff, Gastroenterologist in San Francisco, CA?
Dr. Daniel Rengstorff, MD is a Gastroenterologist, who primarily practices in San Francisco, CA with 1 additional practice location. He has been practicing for over 21 years. Dr. Rengstorff is fluent in English and Korean, and is currently seeing new patients. Dr. Rengstorff’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Rengstorff’s office at (650) 365-3700.
What languages does Dr. Rengstorff speak?
Dr. Rengstorff and their clinical team can communicate with patients in the following languages:
English
Korean
What conditions does Dr. Rengstorff treat?
As a Gastroenterologist, Dr. Rengstorff 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. Rengstorff. 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:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Heartburn
- Acid Reflux
- Indigestion
- GERD Symptoms
ICD-10 Codes:
- R12: Heartburn
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:
- Rectal Bleeding
- Gastrointestinal Bleeding
- Gastrointestinal (GI) Bleeding
- Anal Bleeding
- Blood in Stool
- Lower GI Bleed
ICD-10 Codes:
- K625: Hemorrhage of anus and rectum
Also known as:
- Diarrhea
- Loose stools
- Runny poop
- Frequent bowel movements
ICD-10 Codes:
- R197: Diarrhea, unspecified
Also known as:
- Family History of Digestive Organ Cancer
- Cancer
- Family History
- Genetic risk for gastrointestinal cancer
- Family history of GI cancer
- Hereditary digestive cancer
ICD-10 Codes:
- Z800: Family history of malignant neoplasm of digestive organs
What procedures does Dr. Rengstorff perform?
As a Gastroenterologist, Dr. Rengstorff 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. Rengstorff. 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
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Polyp Removal
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
CPT Codes:
- 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)
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
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
- 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
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
Does Dr. Rengstorff accept my insurance?
Dr. Rengstorff accepts most major insurance plans. Important: Please call our office at (650) 365-3700 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Rengstorff accept in San Francisco, CA?
Dr. Rengstorff in San Francisco, 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
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Express Scripts
Hill Physicians Medical Group
Medicare
Other Provider Networks
UnitedHealthcare
View All Insurances
Where is Dr. Rengstorff's office located?
Dr. Daniel Rengstorff also offers virtual visits
Dr. Daniel Rengstorff's Primary Practice
505 Parnassus Ave
San Francisco, CA 94143
(650) 365-3700
Would you like to schedule an appointment with Dr. Daniel Rengstorff?
Dr. Rengstorff has appointments available at his San Francisco, CA office, as well as 1 other location. Please select a location, date, and time below.
What is Dr. Rengstorff's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Rengstorff's National Provider Identifier (NPI) number is 1033295662.
What common questions do patients ask about Dr. Rengstorff?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Rengstorff
What is Dr. Daniel Rengstorff's specialty?
Dr. Rengstorff is a Gastroenterologist near San Francisco, 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. Rengstorff to book an appointment today.
Is this Dr. Daniel Rengstorff affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Rengstorff is affiliated with Stanford Health Care - Stanford Hospital, Mills-Peninsula Medical Center, Sequoia Hospital, Memorial Medical Center - Modesto, CA, UCSF Medical Center at Parnassus, Community Hospital of Monterey Peninsula 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 Daniel Rengstorff accepting new patients in San Francisco, CA?
Yes, Dr. Daniel Rengstorff is accepting new patients at this time.
Does Dr. Daniel Rengstorff offer online booking?
Yes, you can use online booking to schedule an appointment with Dr. Rengstorff, or call (650) 365-3700 for more information.
How can I make an appointment with Daniel Rengstorff?
Yes, Dr. Rengstorff offers telehealth appointments. You can use online booking to schedule a telehealth appointment with Dr. Rengstorff, or call (650) 365-3700 for more information.
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