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Dr. Karthikeyan Viswanathan, DO

Arcata, CA

Accepting patients
Telehealth

    Who is Dr. Viswanathan, Internist in Arcata, CA?

    Dr. Karthikeyan Viswanathan, DO is an Internist, who primarily practices in Arcata, CA with 2 additional practice locations. He is board certified. Dr. Viswanathan is fluent in English and Hindi, and is currently seeing new patients. To book an appointment or to confirm insurance options, please call Dr. Viswanathan’s office at (707) 825-5000.

    What languages does Dr. Viswanathan speak?

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

    • English

    • Hindi

    What conditions does Dr. Viswanathan treat?

    As a Internist, Dr. Viswanathan 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. Viswanathan. 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:

    • Malaise
    • Fatigue
    • General discomfort
    • Feeling unwell
    • Unease

    ICD-10 Codes:

    • R5381: Other malaise

    Also known as:

    • Opioid Abuse
    • Opioids and Opioid Use Disorder (OUD)
    • Prescription Drug Misuse
    • Opioid misuse
    • Drug abuse (opioids)
    • Problem opioid use

    ICD-10 Codes:

    • F1110: Opioid abuse, uncomplicated

    Also known as:

    • Type 2 Diabetes
    • Diabetes Type 2
    • Type 2 diabetes
    • Diabetes Complicationss
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes
    • Diabetes Mellitus Complications
    • Diabetes Related Health Problems
    • Advanced Diabetes

    ICD-10 Codes:

    • E119: Type 2 diabetes mellitus without complications
    • E1169: Type 2 diabetes mellitus with other specified complication

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Painful Urination
    • Urine and Urination
    • Dysuria
    • Burning when peeing
    • Stinging during urination

    ICD-10 Codes:

    • R300: Dysuria

    Also known as:

    • Immunization Visit
    • Vaccines
    • Vaccination appointment
    • Shot visit
    • Immunization encounter

    ICD-10 Codes:

    • Z23: Encounter for immunization

    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:

    • Exposure to COVID-19
    • COVID-19 (Coronavirus Disease 2019)
    • COVID-19 contact
    • Suspected coronavirus exposure
    • SARS-CoV-2 exposure

    ICD-10 Codes:

    • Z20822: Contact with and (suspected) exposure to COVID-19

    Also known as:

    • Diabetes Screening
    • Health Screening
    • Blood Sugar Test
    • Diabetes Mellitus Screening
    • Glucose Screening

    ICD-10 Codes:

    • Z131: Encounter for screening for diabetes mellitus

    Also known as:

    • Skin Rash
    • Rashes
    • Skin Eruption
    • Hives
    • Dermatitis
    • Skin Inflammation

    ICD-10 Codes:

    • R21: Rash and other nonspecific skin eruption

    Also known as:

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

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • COVID-19 Testing
    • Coronavirus Test
    • SARS-CoV-2 Test
    • COVID Test

    ICD-10 Codes:

    • Z1152: Encounter for screening for COVID-19

    Also known as:

    • Sore Throat
    • Acute pharyngitis
    • Throat inflammation
    • Acute throat infection

    ICD-10 Codes:

    • J029: Acute pharyngitis, unspecified

    Also known as:

    • Cough
    • Coughing
    • Persistent cough
    • Chronic cough

    ICD-10 Codes:

    • R059: Cough, unspecified

    Also known as:

    • Other Specific Abnormal Blood Chemistry Results
    • Blood
    • Specified Blood Chemistry Imbalance
    • Unusual Blood Chemistry Findings
    • Specific Blood Panel Abnormalities

    ICD-10 Codes:

    • R7989: Other specified abnormal findings of blood chemistry

    Also known as:

    • Follow-up After Treatment (Non-Cancer)
    • Post-Treatment Check-up
    • Aftercare Visit
    • Recovery Monitoring Exam

    ICD-10 Codes:

    • Z09: Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

    Also known as:

    • Dizziness
    • Dizziness and Vertigo
    • Lightheadedness
    • Giddiness
    • Vertigo

    ICD-10 Codes:

    • R42: Dizziness and giddiness

    Also known as:

    • Diarrhea
    • Loose stools
    • Runny poop
    • Frequent bowel movements

    ICD-10 Codes:

    • R197: Diarrhea, unspecified

    Also known as:

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

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    Which procedures does Dr. Viswanathan perform as a Internist?

    As a Internist, procedures performed by an Dr. Karthikeyan Viswanathan may include:

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

    Does Dr. Viswanathan accept my insurance?

    Dr. Viswanathan accepts most major insurance plans. Important: Please call our office at (707) 825-5000 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Viswanathan accept in Arcata, CA?

    Dr. Viswanathan in Arcata, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • CVS Health (formerly Aetna)

    View All Insurances

    Where is Dr. Viswanathan's office located?

    Dr. Karthikeyan Viswanathan also offers virtual visits

    Dr. Karthikeyan Viswanathan's Primary Practice

    1600 Weeot Way

    Arcata, CA 95521

    (707) 825-5000

    Get Directions

    Dr. Karthikeyan Viswanathan's Practice 2

    1675 Northcrest Dr

    Crescent City, CA 95531

    Get Directions

    Dr. Karthikeyan Viswanathan's Practice 3

    930 S Fortuna Blvd

    Fortuna, CA 95540

    Get Directions

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

    Dr. Viswanathan's National Provider Identifier (NPI) number is 1396128336.

    What common questions do patients ask about Dr. Viswanathan?

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

    What is Dr. Karthikeyan Viswanathan's specialty?

    Dr. Viswanathan is a Internist near Arcata, CA.

    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. Viswanathan to book an appointment today.

    Is this Dr. Karthikeyan Viswanathan affiliated with a ranked Castle Connolly Top Hospital?

    No, Viswanathan is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Providence Saint Joseph Hospital Eureka. 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 Karthikeyan Viswanathan accepting new patients in Arcata, CA?

    Yes, Dr. Karthikeyan Viswanathan is accepting new patients at this time.

    Does Dr. Karthikeyan Viswanathan offer online booking?

    Please contact Dr. Viswanathan's office at (707) 825-5000 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Karthikeyan Viswanathan?

    Please contact Dr. Viswanathan's office at (707) 825-5000 for information regarding telehealth appointment availability or for scheduling assistance.

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