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Dr. Mark Guelzow, MD

Roslyn, NY

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Guelzow, Family Medicine Specialist in Roslyn, NY?

    Dr. Mark Guelzow, MD is a Family Medicine Specialist, who primarily practices in Roslyn, NY with 2 additional practice locations. Dr. Guelzow is fluent in English, and is currently seeing new patients. Dr. Guelzow’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Guelzow’s office.

    What languages does Dr. Guelzow speak?

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

    • English

    What conditions does Dr. Guelzow treat?

    As a Family Medicine Specialist, Dr. Guelzow 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. Guelzow. 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:

    • 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:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

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

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    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:

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

    ICD-10 Codes:

    • N390: Urinary tract infection, site not specified

    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:

    • Anxiety Disorder
    • Anxiety
    • General Anxiety
    • Anxiety Problems
    • Nervous Disorder

    ICD-10 Codes:

    • F419: Anxiety disorder, unspecified

    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:

    • Walking and Mobility Problems
    • Walking Problems
    • Gait Abnormalities
    • Trouble Moving
    • Mobility Issues

    ICD-10 Codes:

    • R269: Unspecified abnormalities of gait and mobility

    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:

    • Protein-Calorie Malnutrition
    • Malnutrition
    • Protein-energy malnutrition
    • General malnutrition

    ICD-10 Codes:

    • E46: Unspecified protein-calorie malnutrition

    Which procedures does Dr. Guelzow perform as a Family Medicine Specialist?

    As a Family Medicine Specialist, procedures performed by Dr. Mark Guelzow may include:

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

    Does Dr. Guelzow accept my insurance?

    Dr. Guelzow accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Guelzow accept in Roslyn, NY?

    Dr. Guelzow in Roslyn, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • ASR Corporation

    • Corporate Services

    • CVS Health (formerly Aetna)

    • Express Scripts

    • Medicare

    • Service Employees International Union (SEIU)

    • State of Tennessee

    • Sunrise Senior Living

    View All Insurances

    Where is Dr. Guelzow's office located?

    Dr. Mark Guelzow's Primary Practice

    100 Port Washington Blvd

    Roslyn, NY 11576

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    Dr. Mark Guelzow's Practice 2

    373 Route 111 Ste 14

    Smithtown, NY 11787

    (631) 265-0050

    Get Directions

    Dr. Mark Guelzow's Practice 3

    4101 Medical Center Dr Ste 1C

    Fayetteville, NY 13066

    Get Directions

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

    Dr. Guelzow's National Provider Identifier (NPI) number is 1124477484.

    What common questions do patients ask about Dr. Guelzow?

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

    What is Dr. Mark Guelzow's specialty?

    Dr. Guelzow is a Family Medicine Specialist near Roslyn, NY. Family Medicine is a medical specialty focused on comprehensive healthcare for individuals and families. It is a broad field that integrates biological, clinical, and behavioral sciences. The scope of family medicine covers all ages, genders, organ systems, and disease conditions, offering a holistic approach to patient care. Contact Dr. Guelzow to book an appointment today.

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

    Yes, Dr. Guelzow is affiliated with Good Samaritan University Hospital - West Islip, NY, St. Catherine of Siena Hospital 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

    Where can I learn more about Family Medicine Specialist?

    Explore Family Medicine Specialist 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 Guelzow accepting new patients in Roslyn, NY?

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

    Does Dr. Mark Guelzow offer online booking?

    Please contact Dr. Guelzow's office for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Mark Guelzow?

    Please contact Dr. Guelzow's office for information regarding telehealth appointment availability or for scheduling assistance.

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