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Dr. Guillermo Marrero, MD

Oviedo, FL

26 Years of Experience

Accepting patients

    Who is Dr. Marrero, Internist in Oviedo, FL?

    Dr. Guillermo Marrero, MD is an Internist, who primarily practices in Oviedo, FL with 1 additional practice location. He has been practicing for over 26 years and is board certified by the American Board of Internal Medicine. Dr. Marrero graduated from American University of The Caribbean / School of Medicine and completed his residency at Memorial Hosp Of Rhode Island, Internal Medicine. Dr. Marrero is fluent in English and Spanish, and is currently seeing new patients. Dr. Marrero’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Marrero’s office at (407) 971-1970.

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

    • Residency: Memorial Hosp Of Rhode Island, Internal Medicine | Meml Hosp Ri | MEMORIAL HOSPITAL

    • Medical School: American Univ Of The Caribbean- Sch Of Med- Plymouth- Montserrat | American University of The Caribbean / School of Medicine

    Is Dr. Marrero board certified in Internist?

    Yes, Dr. Guillermo Marrero, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Marrero speak?

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

    • English

    • Spanish

    What conditions does Dr. Marrero treat?

    As a Internist, Dr. Marrero 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. Marrero. 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:

    • 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:

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

    ICD-10 Codes:

    • E782: Mixed hyperlipidemia

    Also known as:

    • Vitamin B12 Deficiency Anemia
    • Anemia
    • B Vitamins
    • B12 Anemia
    • Dietary B12 Anemia
    • Cobalamin Deficiency Anemia

    ICD-10 Codes:

    • D519: Vitamin B12 deficiency anemia, unspecified

    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

    Also known as:

    • Common Cold
    • Upper Respiratory Infection
    • Head Cold
    • Cold Symptoms

    ICD-10 Codes:

    • J069: Acute upper respiratory infection, unspecified

    Also known as:

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

    ICD-10 Codes:

    • D649: Anemia, unspecified

    Also known as:

    • Cystostomy Care
    • Ostomy
    • Bladder Stoma Care
    • Urinary Diversion Care
    • Suprapubic Catheter Care

    ICD-10 Codes:

    • Z435: Encounter for attention to cystostomy

    Also known as:

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

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Lower Back Disc Degeneration
    • Spine Injuries and Disorder
    • Degenerative Disc Disease in Lower Back
    • Worn Lumbar Discs
    • Lumbar Disc Wear and Tear

    ICD-10 Codes:

    • M5136: Other intervertebral disc degeneration, lumbar region

    Also known as:

    • Neck Pain
    • Neck Injuries and Disorder
    • Cervical Pain
    • Sore Neck
    • Neck Ache

    ICD-10 Codes:

    • M542: Cervicalgia

    Also known as:

    • Bladder Inflammation
    • Bladder Disease
    • Cystitis
    • Bladder Infection
    • Painful Bladder

    ICD-10 Codes:

    • N3090: Cystitis, unspecified without hematuria

    Also known as:

    • Vitamin D Deficiency
    • Low Vitamin D Levels
    • Lack of Vitamin D
    • Hypovitaminosis D

    ICD-10 Codes:

    • E559: Vitamin D deficiency, unspecified

    Which procedures does Dr. Marrero perform as a Internist?

    As a Internist, procedures performed by an Dr. Guillermo Marrero may include:

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

    Does Dr. Marrero accept my insurance?

    Dr. Marrero accepts most major insurance plans. Important: Please call our office at (407) 971-1970 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Marrero accept in Oviedo, FL?

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

    Top Insurances

    • Department of Defense / Tricare

    • Florida Blue / Guidewell

    • Medicare

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Marrero's office located?

    Dr. Guillermo Marrero's Primary Practice

    1000 Executive Dr Ste 1

    Oviedo, FL 32765

    (407) 971-1970

    Get Directions

    Dr. Guillermo Marrero's Practice 2

    1200 Lexington Green Ln

    Sanford, FL 32771

    Get Directions

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

    Dr. Marrero's National Provider Identifier (NPI) number is 1245211044.

    What common questions do patients ask about Dr. Marrero?

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

    What is Dr. Guillermo Marrero's specialty?

    Dr. Marrero is a Internist near Oviedo, 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. Marrero to book an appointment today.

    Is this Dr. Guillermo Marrero affiliated with a ranked Castle Connolly Top Hospital?

    No, Marrero is not affiliated with a Castle Connolly Top Hospital. 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 Guillermo Marrero accepting new patients in Oviedo, FL?

    Yes, Dr. Guillermo Marrero is accepting new patients at this time.

    Does Dr. Guillermo Marrero offer online booking?

    Please contact Dr. Marrero's office at (407) 971-1970 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Guillermo Marrero?

    Please contact Dr. Marrero's office at (407) 971-1970 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Guillermo Marrero have?

    Dr. Guillermo Marrero is certified by the American Board of Internal Medicine.

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