
32 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Gerard, Gastroenterologist in Downers Grove, IL?
Dr. David Gerard, MD is a Gastroenterologist, who primarily practices in Downers Grove, IL. He has been practicing for over 32 years and is board certified. Dr. Gerard graduated from University of Chicago Division of the Biological Sciences The Pritzker School of Medicine and completed his residency at Yale New Haven Hosp, Gastroenterology; Johns Hopkins Hosp, Internal Medicine. Dr. Gerard is fluent in English, German, and Spanish, and is currently seeing new patients. Dr. Gerard’s practice accepts Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Gerard’s office at (630) 969-1167.
What are Areas of Expertise for Dr. Gerard?
Dr. David Gerard, MD is a highly-rated, board-certified Gastroenterologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Gerard empowers patients to confidently navigate their health journey, specializing in Hepatitis, Inflammatory Bowel Disease/Crohn's, Ulcerative Colitis, and comprehensive wellness support. Serving the Downers Grove, IL community, Dr. Gerard is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Gerard go to medical school and complete their residency?
Residency: Yale New Haven Hosp, Gastroenterology; Johns Hopkins Hosp, Internal Medicine | Bridgeport Hospital/Yale University Program
Medical School: University of Chicago, Pritzker Sch of Med, Chicago Il | University of Chicago Division of the Biological Sciences The Pritzker School of Medicine
Is Dr. Gerard board certified as a Gastroenterologist?
Yes, Dr. David Gerard, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Gerard speak?
Dr. Gerard and their clinical team can communicate with patients in the following languages:
English
German
Spanish
What conditions does a Gastroenterologist like Dr. Gerard typically treat?
As a Gastroenterologist, Dr. Gerard 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. Gerard. 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:
- 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:
- 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:
- 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
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
Also known as:
- Diarrhea
- Loose stools
- Runny poop
- Frequent bowel movements
ICD-10 Codes:
- R197: Diarrhea, unspecified
What procedures does a Gastroenterologist like Dr. Gerard typically perform?
As a Gastroenterologist, Dr. Gerard 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. Gerard. 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:
- 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 Biopsy
- Colorectal Polyp Removal
- Hot Biopsy Colonoscopy
- 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
- 45384: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by hot biopsy forceps
- 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:
- Diagnostic Upper Endoscopy with Biopsy
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
CPT Codes:
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Also known as:
- Continuous Pulse Oximetry
- Pulse Oximetry
- Oxygen Saturation Monitoring
- Oximetry Test
- Blood Oxygen Level Check
CPT Codes:
- 94761: Noninvasive ear or pulse oximetry for oxygen saturation; multiple determinations (eg, during exercise)
Does Dr. Gerard accept my insurance?
Dr. Gerard accepts most major insurance plans. Important: Please call our office at (630) 969-1167 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Gerard accept in Downers Grove, IL?
Dr. Gerard in Downers Grove, IL accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Advocate Health Care
All Other Third Party
Cigna Group
CVS Health (formerly Aetna)
Health Care Service Corporation
Humana
Medicare
State of Illinois
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Gerard's office located?
Dr. David Gerard's Primary Practice
3825 Highland Ave Ste 203
Downers Grove, IL 60515
(630) 969-1167
What is Dr. Gerard's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Gerard's National Provider Identifier (NPI) number is 1942312210.
What common questions do patients ask about Dr. Gerard?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Gerard
What is Dr. David Gerard's specialty?
Dr. Gerard is a Gastroenterologist near Downers Grove, IL.
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. David Gerard affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Gerard is affiliated with Uchicago Medicine Adventhealth Hinsdale 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 David Gerard accepting new patients in Downers Grove, IL?
Yes, Dr. David Gerard is accepting new patients at this time.
Does Dr. David Gerard offer online booking?
Please contact Dr. Gerard's office at (630) 969-1167 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with David Gerard?
Please contact Dr. Gerard's office at (630) 969-1167 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. David Gerard have?
Dr. David Gerard is certified by the American Board of Internal Medicine.
Other Gastroenterologist Near Downers Grove, IL

Gastroenterologist
Dr. James Clark, MD is a Gastroenterologist, who primarily practices in Libertyville, IL with 1 additional practice location. He has been practicing for over 29 years and is board certified.
Libertyville, IL
BOOK APPOINTMENT
Gastroenterologist
Dr. Rockford Yapp, MD is a Gastroenterologist, who primarily practices in Downers Grove, IL with 2 additional practice locations. He has been practicing for over 35 years and is board certified.
Downers Grove, IL
BOOK APPOINTMENTMR
Gastroenterologist
Dr. Manfred Raiser, MD is a Gastroenterologist, who primarily practices in Downers Grove, IL with 1 additional practice location. He has been practicing for over 50 years and is board certified.
Downers Grove, IL