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Dr. William Peterson, MD

Springfield, IL

38 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Peterson, Gastroenterologist in Springfield, IL?

    Dr. William Peterson, MD is a Gastroenterologist, who primarily practices in Springfield, IL with 2 additional practice locations. He has been practicing for over 38 years and is board certified by the American Board of Internal Medicine. Dr. Peterson graduated from University of North Dakota School of Medicine and Health Sciences and completed his residency at Univ Hlth Ctr Of Pittsburgh, Gastroenterology; Univ Of Ne Coll Of Med, Internal Medicine. Dr. Peterson is fluent in English, and is currently seeing new patients. Dr. Peterson’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Peterson’s office at (217) 528-7541.

    Where did Dr. Peterson go to medical school and complete their residency?

    • Residency: Univ Hlth Ctr Of Pittsburgh, Gastroenterology; Univ Of Ne Coll Of Med, Internal Medicine | University of Nebraska Medical Center Program

    • Medical School: University Of Nd Sch Of Med- Grand Forks Nd | University of North Dakota School of Medicine and Health Sciences

    Is Dr. Peterson board certified in Gastroenterologist?

    Yes, Dr. William Peterson, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Peterson speak?

    Dr. Peterson and their clinical team can communicate with patients in the following languages:

    • English

    What conditions does Dr. Peterson treat?

    As a Gastroenterologist, Dr. Peterson 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. Peterson. 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:

    • GERD with Esophagitis
    • Acid Reflux
    • Eosinophilic Esophagitis
    • GERD
    • Acid Reflux (GER & GERD) in Adults
    • Acid Reflux (GER & GERD) in Children
    • Acid Reflux (GER & GERD) in Infants
    • Reflux Esophagitis
    • Acid Reflux Esophagus Inflammation
    • Heartburn with Esophagus Damage
    • Gastroesophageal Reflux
    • Heartburn
    • Indigestion

    ICD-10 Codes:

    • K2100: Gastro-esophageal reflux disease with esophagitis, without bleeding
    • K219: Gastro-esophageal reflux disease without esophagitis

    Also known as:

    • Colon Polyps
    • Non-Infectious Gastroenteritis and Colitis
    • Colonic Polyps
    • Digestive Disease
    • Colorectal Polyps
    • Intestinal Polyps
    • Bowel Polyps
    • Inflammation of Stomach and Intestines
    • Non-Bacterial Colitis
    • Gut Inflammation

    ICD-10 Codes:

    • Z86010: Personal history of colon polyps
    • K529: Noninfective gastroenteritis and colitis, unspecified
    • Z860100: Personal history of colon polyps, unspecified

    Also known as:

    • Barrett's Esophagus
    • Esophagus Disorder
    • Barrett’s Esophagus
    • Barrett's condition
    • Esophageal metaplasia

    ICD-10 Codes:

    • K2270: Barrett's esophagus without dysplasia

    Also known as:

    • Blocked Esophagus
    • Esophagus Disorder
    • Esophageal Obstruction
    • Food Pipe Blockage
    • Swallowing Difficulty

    ICD-10 Codes:

    • K222: Esophageal obstruction

    Also known as:

    • History of Adenomatous and Serrated Colon Polyps
    • Past Colon Polyps
    • Previous Adenomas
    • History of Precancerous Colon Growths

    ICD-10 Codes:

    • Z860101: Personal history of adenomatous and serrated colon polyps

    Also known as:

    • Fatty Liver Disease
    • Liver Disease
    • Nonalcoholic Fatty Liver Disease (NAFLD) & NASH
    • Nonalcoholic Fatty Liver Disease & NASH in Children
    • NAFLD
    • NASH
    • Hepatic steatosis

    ICD-10 Codes:

    • K760: Fatty (change of) liver, not elsewhere classified

    Also known as:

    • Stomach Inflammation
    • Stomach Disorder
    • Gastritis & Gastropathy
    • Gastritis
    • Inflamed stomach lining
    • Stomach lining inflammation

    ICD-10 Codes:

    • K2970: Gastritis, unspecified, without bleeding

    Also known as:

    • Ulcerative Colitis
    • Colitis
    • Inflammatory Bowel Disease (IBD)
    • Chronic Colitis

    ICD-10 Codes:

    • K5190: Ulcerative colitis, unspecified, without complications

    Also known as:

    • Crohn's Disease
    • Crohn’s Disease
    • Regional Enteritis
    • Inflammatory Bowel Disease (IBD)
    • Terminal Ileitis

    ICD-10 Codes:

    • K5090: Crohn's disease, unspecified, without complications

    Also known as:

    • High Cholesterol
    • Cholesterol
    • Triglycerides
    • Hyperlipidemia
    • High lipids
    • Dyslipidemia

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    Also known as:

    • Anemia
    • Iron Deficiency Anemia
    • Iron
    • Low Red Blood Cell Count
    • Low Hemoglobin
    • Iron deficiency
    • Anemia from Iron Lack
    • Low Iron Anemia
    • Sideropenic Anemia

    ICD-10 Codes:

    • D649: Anemia, unspecified
    • D509: Iron deficiency anemia, unspecified

    Also known as:

    • Other Pre-Procedure Examination
    • Various pre-op checks
    • Miscellaneous pre-surgery exams
    • Other pre-treatment assessments

    ICD-10 Codes:

    • Z01818: Encounter for other preprocedural examination

    Also known as:

    • Cirrhosis
    • Liver scarring
    • End-stage liver disease
    • Chronic liver failure

    ICD-10 Codes:

    • K7460: Unspecified cirrhosis of liver

    Also known as:

    • Dark, Tarry Stools (Melena)
    • Gastrointestinal Bleeding
    • Melena
    • Black Stools
    • Upper GI Bleed Signs

    ICD-10 Codes:

    • K921: Melena

    Also known as:

    • Type 2 Diabetes
    • Diabetes Type 2
    • Type 2 diabetes
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes

    ICD-10 Codes:

    • E119: Type 2 diabetes mellitus without complications

    Does Dr. Peterson accept my insurance?

    Dr. Peterson accepts most major insurance plans. Important: Please call our office at (217) 528-7541 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Peterson accept in Springfield, IL?

    Dr. Peterson in Springfield, IL accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Commercial

    • Centene

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • Fidelity Insurance Group

    • Health Alliance (HAMP)

    • Health Alliance Plan (HAP)

    • Medicare

    • State of Illinois

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Peterson's office located?

    Dr. William Peterson's Primary Practice

    1025 S 6th St

    Springfield, IL 62703

    (217) 528-7541

    Get Directions

    Springfield Clinic Jacksonville

    557 N Westgate Ave

    Jacksonville, IL 62650

    Get Directions

    Dr. William Peterson's Practice 3

    15 Founders Ln

    Jacksonville, IL 62650

    Get Directions

    What is Dr. Peterson's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Peterson's National Provider Identifier (NPI) number is 1174623854.

    What common questions do patients ask about Dr. Peterson?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Peterson

    What is Dr. William Peterson's specialty?

    Dr. Peterson is a Gastroenterologist near Springfield, IL. 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. Peterson to book an appointment today.

    Is this Dr. William Peterson affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Peterson is affiliated with Springfield Memorial 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

    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 William Peterson accepting new patients in Springfield, IL?

    Yes, Dr. William Peterson is accepting new patients at this time.

    Does Dr. William Peterson offer online booking?

    Please contact Dr. Peterson's office at (217) 528-7541 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with William Peterson?

    Please contact Dr. Peterson's office at (217) 528-7541 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. William Peterson have?

    Dr. William Peterson is certified by the American Board of Internal Medicine.

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