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Dr. Mark Ritter, MD

Chesterton, IN

33 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Ritter, Internist in Chesterton, IN?

    Dr. Mark Ritter, MD is an Internist, who primarily practices in Chesterton, IN with 2 additional practice locations. He has been practicing for over 33 years and is board certified by the American Board of Internal Medicine. Dr. Ritter graduated from Indiana University School of Medicine and completed his residency at Clarian Indiana Univ Hosp, Internal Medicine. Dr. Ritter is fluent in English, and is currently seeing new patients. Dr. Ritter’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Ritter’s office at (219) 395-2200.

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

    • Residency: Clarian Indiana Univ Hosp, Internal Medicine | Mercy St Vincent Medical Center/Mercy Health Partners Program

    • Medical School: In Univ Sch of Med, Indianapolis In | Indiana University School of Medicine

    Is Dr. Ritter board certified in Internist?

    Yes, Dr. Mark Ritter, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Ritter speak?

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

    • English

    What conditions does Dr. Ritter treat?

    As a Internist, Dr. Ritter 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. Ritter. 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:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Type 2 Diabetes
    • Type 2 Diabetes with High Blood Sugar
    • Type 2 Diabetes with Chronic Kidney Disease
    • Diabetes Type 2
    • Type 2 diabetes
    • Hyperglycemia
    • Diabetic Kidney Problems
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes
    • Diabetic Hyperglycemia
    • High Blood Glucose
    • High Sugar Levels
    • Diabetic Chronic Kidney Disease
    • Long-term Kidney Failure from Type 2 Diabetes
    • Type 2 Diabetes End-Stage Renal Disease

    ICD-10 Codes:

    • E119: Type 2 diabetes mellitus without complications
    • E1165: Type 2 diabetes mellitus with hyperglycemia
    • E1122: Type 2 diabetes mellitus with diabetic chronic kidney disease

    Also known as:

    • High Cholesterol
    • Cholesterol
    • Triglycerides
    • Hypercholesterolemia
    • High blood cholesterol
    • Elevated cholesterol
    • Hyperlipidemia
    • High lipids
    • Dyslipidemia

    ICD-10 Codes:

    • E7800: Pure hypercholesterolemia, unspecified
    • E785: Hyperlipidemia, unspecified

    Also known as:

    • Mammogram for Breast Cancer Screening
    • Health Screening
    • Mammography
    • Breast Cancer Screening (PDQ®)
    • Mammograms
    • Breast X-ray
    • Breast Cancer Check

    ICD-10 Codes:

    • Z1231: Encounter for screening mammogram for malignant neoplasm of breast

    Also known as:

    • Obesity
    • Take Charge of Your Health: A Guide for Teenagers
    • Excess Weight
    • Being Overweight
    • High BMI

    ICD-10 Codes:

    • E669: Obesity, unspecified

    Also known as:

    • Other Long-Term Drug Therapy
    • Chronic medication use
    • Ongoing drug treatment
    • Extended drug therapy

    ICD-10 Codes:

    • Z79899: Other long term (current) drug therapy

    Also known as:

    • Anemia
    • Low Red Blood Cell Count
    • Low Hemoglobin
    • Iron deficiency

    ICD-10 Codes:

    • D649: Anemia, unspecified

    Also known as:

    • Protein in Urine
    • Urine and Urination
    • Proteinuria
    • Albuminuria
    • Foamy urine

    ICD-10 Codes:

    • R809: Proteinuria, unspecified

    Also known as:

    • Screening for Other Viral Disease
    • Health Screening
    • Other Viral Infection Screening
    • Miscellaneous Virus Test
    • Non-COVID Viral Screening

    ICD-10 Codes:

    • Z1159: Encounter for screening for other viral diseases

    Also known as:

    • COPD
    • Chronic Obstructive Pulmonary Disease
    • Chronic Lung Disease
    • Emphysema and Chronic Bronchitis

    ICD-10 Codes:

    • J449: Chronic obstructive pulmonary disease, unspecified

    Also known as:

    • Bilirubin Metabolism Disorder
    • Metabolic Disorder
    • Dubin-Johnson syndrome
    • Dubin-Johnson syndrome', 'Gilbert's syndrome
    • Jaundice cause

    ICD-10 Codes:

    • E806: Other disorders of bilirubin metabolism

    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:

    • High Fasting Blood Sugar
    • Blood Glucose
    • Impaired Fasting Glucose
    • Prediabetes (Fasting)
    • Borderline Diabetes (Fasting)

    ICD-10 Codes:

    • R7301: Impaired fasting glucose

    Also known as:

    • Acute and Chronic Respiratory Failure
    • Respiratory Failure
    • Sudden and Long-Term Lung Failure
    • Acute and Chronic Breathing Failure
    • Unspecified Respiratory Insufficiency

    ICD-10 Codes:

    • J9620: Acute and chronic respiratory failure, unspecified whether with hypoxia or hypercapnia

    Also known as:

    • Other Orthopedic Aftercare
    • General orthopedic recovery
    • Musculoskeletal post-op care
    • Bone and joint follow-up

    ICD-10 Codes:

    • Z4789: Encounter for other orthopedic aftercare

    Also known as:

    • Urinary Tract Infection
    • UTI
    • Bladder infection
    • Kidney infection
    • Urine infection

    ICD-10 Codes:

    • N390: Urinary tract infection, site not specified

    Also known as:

    • Therapeutic Drug Monitoring
    • Drug level testing
    • Medication monitoring
    • Therapeutic drug management

    ICD-10 Codes:

    • Z5181: Encounter for therapeutic drug level monitoring

    Which procedures does Dr. Ritter perform as a Internist?

    As a Internist, procedures performed by an Dr. Mark Ritter may include:

    For detailed information, please contact Dr. Ritter's office.

    Does Dr. Ritter accept my insurance?

    Dr. Ritter accepts most major insurance plans. Important: Please call our office at (219) 395-2200 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Ritter accept in Chesterton, IN?

    Dr. Ritter in Chesterton, IN accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Blue Cross Blue Shield of Michigan

    • Christian Healthcare Ministries

    • CVS Health (formerly Aetna)

    • Department of Veterans Affairs

    • Health Alliance Plan (HAP)

    • Humana

    • Medicare

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Ritter's office located?

    Dr. Mark Ritter's Primary Practice

    425 Sand Creek Dr Ste C

    Chesterton, IN 46304

    (219) 395-2200

    Get Directions

    Dr. Mark Ritter's Practice 2

    650 Dickinson Rd

    Chesterton, IN 46304

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    Dr. Mark Ritter's Practice 3

    2022 Kelle Dr

    Chesterton, IN 46304

    Get Directions

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

    Dr. Ritter's National Provider Identifier (NPI) number is 1609939511.

    What common questions do patients ask about Dr. Ritter?

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

    What is Dr. Mark Ritter's specialty?

    Dr. Ritter is a Internist near Chesterton, IN.

    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.

    Contact Dr. Ritter to book an appointment today.

    Is this Dr. Mark Ritter affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Ritter is affiliated with Good Samaritan Hospital - Vincennes, In 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 Internist?

    Explore Internist 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 Mark Ritter accepting new patients in Chesterton, IN?

    Yes, Dr. Mark Ritter is accepting new patients at this time.

    Does Dr. Mark Ritter offer online booking?

    Please contact Dr. Ritter's office at (219) 395-2200 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Mark Ritter?

    Please contact Dr. Ritter's office at (219) 395-2200 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Mark Ritter have?

    Dr. Mark Ritter is certified by the American Board of Internal Medicine.

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