Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Zerega, Gastroenterologist in Lake Saint Louis, MO?
Dr. Michael Zerega, MD is a Gastroenterologist, who primarily practices in Lake Saint Louis, MO with 1 additional practice location. He is board certified. Dr. Zerega completed his residency at Washington U/B-Jh/Slch Conc, Gastroenterology Univ Of Nc Hosps, Internal Medicine. Dr. Zerega is fluent in English, and is currently seeing new patients. Dr. Zerega’s practice accepts Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Zerega’s office at (636) 561-9020.
What are Areas of Expertise for Dr. Zerega?
Dr. Michael Zerega, MD is a highly-rated, board-certified Gastroenterologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Zerega empowers patients to confidently navigate their health journey, specializing in Colon Cancer Screening, Digestive Disorders, or comprehensive wellness support. Serving the Lake Saint Louis/MO community, Dr. Zerega is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Zerega go to medical school and complete their residency?
Fellowship: Barnes Jewish Hospital
Residency: Washington U/B-Jh/Slch Conc, Gastroenterology Univ Of Nc Hosps, Internal Medicine | University of North Carolina (UNC) Affiliated Hospitals
Medical School: Washington University School of Medicine, St. Louis
Is Dr. Zerega board certified as a Gastroenterologist?
Yes, Dr. Michael Zerega, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Zerega speak?
Dr. Zerega and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Zerega treat?
As a Gastroenterologist, Dr. Zerega 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. Zerega. 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:
- 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:
- Ulcerative Pancolitis
- Ulcerative Colitis
- Chronic Pancolitis
- Extensive Ulcerative Colitis
- Inflammatory Bowel Disease (IBD)
ICD-10 Codes:
- K5100: Ulcerative (chronic) pancolitis without complications
Also known as:
- Blocked Esophagus
- Esophagus Disorder
- Esophageal Obstruction
- Food Pipe Blockage
- Swallowing Difficulty
ICD-10 Codes:
- K222: Esophageal obstruction
Also known as:
- Difficulty Swallowing
- Swallowing Disorder
- Dysphagia
- Trouble swallowing
- Painful swallowing
ICD-10 Codes:
- R1310: Dysphagia, unspecified
Also known as:
- Crohn's Disease of the Small Intestine
- Crohn's Disease
- Crohn’s Disease
- Regional Enteritis
- Inflammatory Bowel Disease (IBD)
- Ileitis
ICD-10 Codes:
- K5000: Crohn's disease of small intestine without complications
Also known as:
- Chronic Stomach Inflammation
- Stomach Disorder
- Gastritis & Gastropathy
- Chronic gastritis
- Long-term stomach inflammation
- Persistent stomach lining inflammation
ICD-10 Codes:
- K2950: Unspecified chronic gastritis without bleeding
What procedures does Dr. Zerega perform?
As a Gastroenterologist, Dr. Zerega 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. Zerega. 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 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:
- Esophagus Widening Procedure (Endoscopic)
- EGD with Esophageal Balloon Dilation
- Colonoscopy with Injections
- Diagnostic Upper Endoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- Esophageal Dilation
- EGD with Dilation
- Upper Endoscopy with Widening
- Upper Endoscopy with Esophageal Dilation
- Flexible Esophagoscopy with Balloon
- EGD with Balloon Widening
- Flexible Colonoscopy with Injection
- Colon Scope with Medication
- Therapeutic Colonoscopy
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
CPT Codes:
- 43248: Esophagogastroduodenoscopy, flexible, transoral; with insertion of guide wire followed by passage of dilator(s) through esophagus over guide wire
- 43249: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic balloon dilation of esophagus (less than 30 mm diameter)
- 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Also known as:
- Esophageal Motility Study
- Esophageal manometry
- Swallowing function test
- GERD test
- Esophageal pressure study
CPT Codes:
- 91010: Esophageal motility (manometric study of the esophagus and/or gastroesophageal junction) study with interpretation and report;
Does Dr. Zerega accept my insurance?
Dr. Zerega accepts most major insurance plans. Important: Please call our office at (636) 561-9020 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Zerega accept in Lake Saint Louis, MO?
Dr. Zerega in Lake Saint Louis, MO accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Aetna
Allied Benefit Systems
Blue Cross Blue Shield of Michigan
Carpenters Funds Administrative Office (CA)
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Express Scripts
Group Administrators Ltd
Medicare
State of Tennessee
View All Insurances
Where is Dr. Zerega's office located?
Dr. Michael Zerega's Primary Practice
200 Brevco Plz Ste 208
Lake Saint Louis, MO 63367
(636) 561-9020
Dr. Michael Zerega's Practice 2
615 S New Ballas Rd Ste 1200
Saint Louis, MO 63141
(314) 251-2880
What is Dr. Zerega's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Zerega's National Provider Identifier (NPI) number is 1073505178.
What common questions do patients ask about Dr. Zerega?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Zerega
What is Dr. Michael Zerega's specialty?
Dr. Zerega is a Gastroenterologist near Lake Saint Louis, MO. 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. Zerega to book an appointment today.
Is this Dr. Michael Zerega affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Zerega is affiliated with Mercy Hospital St. Louis 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
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 Michael Zerega accepting new patients in Lake Saint Louis, MO?
Yes, Dr. Michael Zerega is accepting new patients at this time.
Does Dr. Michael Zerega offer online booking?
Please contact Dr. Zerega's office at (636) 561-9020 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Michael Zerega?
Please contact Dr. Zerega's office at (636) 561-9020 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Michael Zerega have?
Dr. Michael Zerega is certified by the American Board of Internal Medicine.
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