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Dr. John Nicolas, MD

Chicago, IL

32 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Nicolas, Internist in Chicago, IL?

    Dr. John Nicolas, MD is an Internist, who primarily practices in Chicago, IL with 2 additional practice locations. He has been practicing for over 32 years and is board certified by the American Board of Internal Medicine. Dr. Nicolas completed his residency at Northwestern Mem Hosp, Internal Medicine. Dr. Nicolas is fluent in English, and is currently seeing new patients. Dr. Nicolas’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Nicolas’s office at (312) 472-4151.

    What are Areas of Expertise for Dr. Nicolas?

    Dr. John Nicolas, MD is a highly-rated, board-certified Internist 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. Nicolas empowers patients to confidently navigate their health journey, specializing in Adult Medicine, Comprehensive Primary Care, Diabetes, Hypertension, Preventive Medicine, or comprehensive wellness support. Serving the Chicago/IL community, Dr. Nicolas is dedicated to enhancing lives through expert, patient-centered care.

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

    • Residency: Northwestern Mem Hosp, Internal Medicine | Northwestern Mem Hospital

    • Medical School: Loyola Univ of Chicago Stritch Sch of Med, Maywood Il

    Is Dr. Nicolas board certified in Internist?

    Yes, Dr. John Nicolas, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Nicolas speak?

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

    • English

    What conditions does Dr. Nicolas treat?

    As a Internist, Dr. Nicolas 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. Nicolas. 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:

    • High Blood Pressure Heart Disease with Heart Failure
    • Heart Failure
    • High Blood Pressure
    • Hypertensive Heart Failure
    • High Blood Pressure Causing Heart Failure

    ICD-10 Codes:

    • I110: Hypertensive heart disease with heart failure

    Also known as:

    • COPD
    • COPD Flare-Up
    • Chronic Obstructive Pulmonary Disease
    • Chronic Lung Disease
    • Emphysema and Chronic Bronchitis
    • COPD Exacerbation
    • Chronic Obstructive Pulmonary Disease Flare-Up
    • Worsening COPD
    • COPD Attack

    ICD-10 Codes:

    • J449: Chronic obstructive pulmonary disease, unspecified
    • J441: Chronic obstructive pulmonary disease with (acute) exacerbation

    Also known as:

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

    ICD-10 Codes:

    • Z5181: Encounter for therapeutic drug level monitoring

    Also known as:

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

    ICD-10 Codes:

    • E7800: Pure hypercholesterolemia, 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:

    • Right Lower Leg Open Wound
    • Wounds and Injuries
    • Right Leg Cut
    • Right Leg Injury
    • Open Sore on Right Lower Leg

    ICD-10 Codes:

    • S81801D: Unspecified open wound, right lower leg, subsequent encounter

    Also known as:

    • Orthostatic Hypotension
    • Autonomic Nervous System Disorder
    • Orthostatic hypotension
    • Postural Hypotension
    • Dizziness on Standing
    • Drop in Blood Pressure When Standing

    ICD-10 Codes:

    • I951: Orthostatic hypotension

    Also known as:

    • Chronic Venous Insufficiency
    • Vascular Disease
    • CVI
    • Venous Reflux Disease
    • Leg Vein Incompetence
    • Peripheral Venous Insufficiency

    ICD-10 Codes:

    • I872: Venous insufficiency (chronic) (peripheral)

    Also known as:

    • Routine Adult Health Checkup
    • Health Checkup
    • Adult physical exam
    • Annual wellness visit for adults
    • General adult medical exam

    ICD-10 Codes:

    • Z0000: Encounter for general adult medical examination without abnormal findings

    Also known as:

    • Hardening of the Arteries in the Heart without Chest Pain
    • Atherosclerosis
    • Coronary Artery Disease
    • Silent Coronary Artery Disease
    • Asymptomatic Atherosclerosis

    ICD-10 Codes:

    • I2510: Atherosclerotic heart disease of native coronary artery without angina pectoris

    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

    Which procedures does Dr. Nicolas perform as a Internist?

    As a Internist, procedures performed by an Dr. John Nicolas may include:

    For detailed information, please contact Dr. Nicolas' office.

    Does Dr. Nicolas accept my insurance?

    Dr. Nicolas accepts most major insurance plans. Important: Please call our office at (312) 472-4151 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Nicolas accept in Chicago, IL?

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

    Top Insurances

    • Aetna

    • All Other Third Party

    • Blue Cross Blue Shield

    • Blue Cross Blue Shield of Michigan

    • Corporate Services

    • CVS Health (formerly Aetna)

    • Health Care Service Corporation (HCSC)

    • Humana

    • Medicare

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Nicolas' office located?

    Dr. John Nicolas' Primary Practice

    635 N Fairbanks Ct Fl 1

    Chicago, IL 60611

    (312) 472-4151

    Get Directions

    Dr. John Nicolas' Practice 2

    870 N Milwaukee Ave

    Vernon Hills, IL 60061

    Get Directions

    Dr. John Nicolas' Practice 3

    675 N Saint Clair St

    Chicago, IL 60611

    Get Directions

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

    Dr. Nicolas's National Provider Identifier (NPI) number is 1417940917.

    What common questions do patients ask about Dr. Nicolas?

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

    What is Dr. John Nicolas's specialty?

    Dr. Nicolas is a Internist near Chicago, IL.

    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. Nicolas to book an appointment today.

    Is this Dr. John Nicolas affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Nicolas is affiliated with Northwestern 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 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 John Nicolas accepting new patients in Chicago, IL?

    Yes, Dr. John Nicolas is accepting new patients at this time.

    Does Dr. John Nicolas offer online booking?

    Please contact Dr. Nicolas's office at (312) 472-4151 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Nicolas?

    Please contact Dr. Nicolas's office at (312) 472-4151 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Nicolas have?

    Dr. John Nicolas is certified by the American Board of Internal Medicine.

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