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Dr. John Ryan, MD

Lake Mary, FL

42 Years of Experience

Accepting patients

    Who is Dr. Ryan, Internist in Lake Mary, FL?

    Dr. John Ryan, MD is an Internist, who primarily practices in Lake Mary, FL with 2 additional practice locations. He has been practicing for over 42 years and is board certified by the American Board of Internal Medicine. Dr. Ryan graduated from State University of New York Downstate Medical Center College of Medicine and completed his residency at Duke Univ Med Ctr, Internal Medicine. Dr. Ryan is fluent in English, and is currently seeing new patients. Dr. Ryan’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Ryan’s office at (407) 333-2503.

    What are Areas of Expertise for Dr. Ryan?

    Dr. John Ryan, 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. Ryan empowers patients to confidently navigate their health journey, specializing in Primary Care, or comprehensive wellness support. Serving the Lake Mary/FL community, Dr. Ryan is dedicated to enhancing lives through expert, patient-centered care.

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

    • Residency: Duke Univ Med Ctr, Internal Medicine | Duke University Hospital Program

    • Medical School: Suny-Hlth Sci Ctr At Brooklyn, Coll of Med, Brooklyn Ny | State University of New York Downstate Medical Center College of Medicine

    Is Dr. Ryan board certified in Internist?

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

    What languages does Dr. Ryan speak?

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

    • English

    What conditions does Dr. Ryan treat?

    As a Internist, Dr. Ryan 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. Ryan. 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:

    • Circulatory System Surgery Aftercare
    • Genitourinary System Surgery Aftercare
    • After Surgery
    • Post-cardiac surgery care
    • Vascular surgery aftercare
    • Heart surgery recovery
    • Post-urinary tract surgery care
    • Reproductive organ surgery aftercare
    • Kidney surgery recovery

    ICD-10 Codes:

    • Z48812: Encounter for surgical aftercare following surgery on the circulatory system
    • Z48816: Encounter for surgical aftercare following surgery on the genitourinary system

    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:

    • Urinary Device Fitting and Adjustment
    • Urological Device Fitting
    • Bladder Device Adjustment
    • Catheter Fitting

    ICD-10 Codes:

    • Z466: Encounter for fitting and adjustment of urinary device

    Also known as:

    • COVID-19
    • COVID-19 (Coronavirus Disease 2019)
    • Coronavirus Disease 2019
    • SARS-CoV-2 Infection
    • Novel Coronavirus

    ICD-10 Codes:

    • U071: COVID-19

    Also known as:

    • Multiple Sclerosis
    • MS
    • Demyelinating Disease

    ICD-10 Codes:

    • G35: Multiple sclerosis

    Also known as:

    • Low Back Pain
    • Back Pain
    • Lumbago
    • Lower Back Ache
    • Backache

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    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:

    • Atrial Fibrillation
    • Afib
    • A-fib
    • Irregular heart rhythm

    ICD-10 Codes:

    • I4891: Unspecified atrial fibrillation

    Also known as:

    • Lower Back Spinal Stenosis
    • Spinal Stenosis
    • Narrowing of Lower Back Spinal Canal
    • Lumbar Spinal Canal Narrowing
    • Lumbar Stenosis

    ICD-10 Codes:

    • M48061: Spinal stenosis, lumbar region without neurogenic claudication

    Also known as:

    • Dementia
    • Cognitive decline
    • Memory loss
    • Brain disorder

    ICD-10 Codes:

    • F0390: Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

    Also known as:

    • Widespread Osteoarthritis
    • Osteoarthritis
    • Generalized Osteoarthritis
    • Multiple Joint Arthritis
    • Polyarthritis

    ICD-10 Codes:

    • M159: Polyosteoarthritis, unspecified

    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:

    • 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:

    • Alzheimer's Disease
    • Alzheimer's Disease Fact Sheet
    • AD', 'Alzheimer's Dementia
    • Memory Loss Disease

    ICD-10 Codes:

    • G309: Alzheimer's disease, unspecified

    Also known as:

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

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    Also known as:

    • High Blood Pressure Heart and Kidney Disease with Heart Failure
    • Chronic Kidney Disease
    • Heart Failure
    • High Blood Pressure
    • Hypertensive Cardiorenal Syndrome
    • Heart and Kidney Failure from High Blood Pressure

    ICD-10 Codes:

    • I130: Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

    Which procedures does Dr. Ryan perform as a Internist?

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

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

    Does Dr. Ryan accept my insurance?

    Dr. Ryan accepts most major insurance plans. Important: Please call our office at (407) 333-2503 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Ryan accept in Lake Mary, FL?

    Dr. Ryan in Lake Mary, FL accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Aetna

    • Centene

    • Christian Healthcare Ministries

    • CVS Health (formerly Aetna)

    • Department of Defense / Tricare

    • Elevance Health Inc. (formerly Anthem)

    • Florida Blue / Guidewell

    • Humana

    • Medicare

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Ryan's office located?

    Dr. John Ryan's Primary Practice

    4106 W Lake Mary Blvd Ste 301

    Lake Mary, FL 32746

    (407) 333-2503

    Get Directions

    Dr. John Ryan's Practice 2

    635 Century Pt Ste 111

    Lake Mary, FL 32746

    Get Directions

    Dr. John Ryan's Practice 3

    1200 Lexington Green Ln

    Sanford, FL 32771

    Get Directions

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

    Dr. Ryan's National Provider Identifier (NPI) number is 1144266974.

    What common questions do patients ask about Dr. Ryan?

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

    What is Dr. John Ryan's specialty?

    Dr. Ryan is a Internist near Lake Mary, FL.

    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. Ryan to book an appointment today.

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

    No, Ryan is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: AdventHealth Altamonte Springs, Orlando Health Orlando Regional Medical Center. Castle Connolly Top Hospitals 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 Ryan accepting new patients in Lake Mary, FL?

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

    Does Dr. John Ryan offer online booking?

    Please contact Dr. Ryan's office at (407) 333-2503 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Ryan?

    Please contact Dr. Ryan's office at (407) 333-2503 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Ryan have?

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

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