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Dr. Douglas Marshall, MD

Morton, IL

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Marshall, Internist in Morton, IL?

    Dr. Douglas Marshall, MD is an Internist, who primarily practices in Morton, IL with 2 additional practice locations. He is board certified. Dr. Marshall graduated from Southern Illinois Univ School of Medicine and completed his residency at Eastern Va Med Sch, Internal Medicine; Naval Reg Med Ctr, Flexible Or Transitional Year. Dr. Marshall is fluent in English, and is currently seeing new patients. Dr. Marshall’s practice accepts Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Marshall’s office at (309) 266-8900.

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

    • Residency: Eastern Va Med Sch, Internal Medicine; Naval Reg Med Ctr, Flexible Or Transitional Year | Eastern Va Med School | Eastern Virginia Medical School Program

    • Medical School: Southern Il Univ Sch Of Med- Springfield Il | Southern Illinois University At Edwardsville | Southern Illinois Univ School of Medicine

    Is Dr. Marshall board certified as an Internist?

    Yes, Dr. Douglas Marshall, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Marshall speak?

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

    • English

    What conditions does an Internist like Dr. Marshall typically treat?

    As an Internist, Dr. Marshall 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. Marshall. 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:

    • High Blood Pressure
    • Hypertension
    • Primary Hypertension
    • Essential Hypertension

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Mixed High Cholesterol and Triglycerides
    • Cholesterol
    • Triglycerides
    • Mixed hyperlipidemia
    • Combined hyperlipidemia
    • High lipids

    ICD-10 Codes:

    • E782: Mixed hyperlipidemia

    Also known as:

    • Prediabetes
    • Insulin Resistance & Prediabetes
    • Borderline diabetes
    • Insulin resistance
    • High blood sugar (not yet diabetes)

    ICD-10 Codes:

    • R7303: Prediabetes

    Also known as:

    • Chronic Kidney Disease, Stage 3a
    • Chronic Kidney Disease
    • Chronic Kidney Disease (CKD)
    • CKD Stage 3a
    • Moderate Chronic Kidney Disease

    ICD-10 Codes:

    • N1831: Chronic kidney disease, stage 3a

    Also known as:

    • High Cholesterol
    • Cholesterol
    • Hypercholesterolemia
    • High blood cholesterol
    • Elevated cholesterol

    ICD-10 Codes:

    • E7800: Pure hypercholesterolemia, unspecified

    Also known as:

    • Immunization Visit
    • Vaccines
    • Vaccination appointment
    • Shot visit
    • Immunization encounter

    ICD-10 Codes:

    • Z23: Encounter for immunization

    Also known as:

    • Hypothyroidism
    • Congenital hypothyroidism
    • Hypothyroidism (Underactive Thyroid)
    • Underactive Thyroid
    • Low Thyroid Function

    ICD-10 Codes:

    • E039: Hypothyroidism, unspecified

    What procedures does an Internist like Dr. Marshall typically perform?

    As an Internist, Dr. Marshall 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. Marshall. 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:

    • Joint or Bursa Injection/Fluid Removal
    • Arthrocentesis
    • Major Joint Aspiration
    • Bursa Injection
    • Joint Fluid Removal

    CPT Codes:

    • 20610: Arthrocentesis, aspiration and/or injection, major joint or bursa (eg, shoulder, hip, knee, subacromial bursa); without ultrasound guidance

    Does Dr. Marshall accept my insurance?

    Dr. Marshall accepts most major insurance plans. Important: Please call our office at (309) 266-8900 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Marshall accept in Morton, IL?

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

    Top Insurances

    • CVS Health (formerly Aetna)

    • Health Care Service Corporation

    • Humana

    • Medicaid

    • Medicare

    • Mutual of Omaha

    • Other Health Care Provider

    • State of Illinois

    • UnitedHealth Group

    • Unknown

    View All Insurances

    Where is Dr. Marshall's office located?

    Dr. Douglas Marshall's Primary Practice

    110 N Main St

    Morton, IL 61550

    (309) 266-8900

    Get Directions

    Dr. Douglas Marshall's Practice 2

    5401 N Knoxville Ave

    Peoria, IL 61614

    Get Directions

    Dr. Douglas Marshall's Practice 3

    2076 N Main St

    Canton, IL 61520

    Get Directions

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

    Dr. Marshall's National Provider Identifier (NPI) number is 1477569499.

    What common questions do patients ask about Dr. Marshall?

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

    What is Dr. Douglas Marshall's specialty?

    Dr. Marshall is a Internist near Morton, IL.

    What does an Internist do?

    A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

    Is this Dr. Douglas Marshall affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Marshall is affiliated with Carle Health Methodist Hospital, Osf Healthcare Saint Francis Medical Center, Graham Hospital, Osf Healthcare St. Joseph Medical Center 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

    When to see an Internist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Internist. 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 Douglas Marshall accepting new patients in Morton, IL?

    Yes, Dr. Douglas Marshall is accepting new patients at this time.

    Does Dr. Douglas Marshall offer online booking?

    Please contact Dr. Marshall's office at (309) 266-8900 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Douglas Marshall?

    Please contact Dr. Marshall's office at (309) 266-8900 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Douglas Marshall have?

    Dr. Douglas Marshall 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>