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Dr. Gary Underhill, MD

Dayton, WA

23 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Underhill, Family Medicine Specialist in Dayton, WA?

    Dr. Gary Underhill, MD is a Family Medicine Specialist, who primarily practices in Dayton, WA with 2 additional practice locations. He has been practicing for over 23 years and is board certified by the American Board of Family Medicine. Dr. Underhill graduated from Loma Linda University School of Medicine and completed his residency at Eastern Me Med Ctr, Family Medicine. Dr. Underhill is fluent in English, and is currently seeing new patients. Dr. Underhill’s practice accepts Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Underhill’s office at (509) 382-2531.

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

    • Residency: Eastern Me Med Ctr, Family Medicine

    • Medical School: Loma Linda University School of Medicine

    Is Dr. Underhill board certified in Family Medicine Specialist?

    Yes, Dr. Gary Underhill, MD is board certified by the American Board of Family Medicine

    What languages does Dr. Underhill speak?

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

    • English

    What conditions does Dr. Underhill treat?

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

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

    ICD-10 Codes:

    • N390: Urinary tract infection, site not specified

    Also known as:

    • Viral Infection
    • Virus Infection
    • Viral Illness
    • Common Virus

    ICD-10 Codes:

    • B349: Viral infection, unspecified

    Also known as:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Pectoral pain

    ICD-10 Codes:

    • R0789: Other chest pain

    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:

    • Other Administrative Medical Exams
    • Miscellaneous administrative exams
    • Various official health checks
    • Other regulatory medical assessments

    ICD-10 Codes:

    • Z0289: Encounter for other administrative examinations

    Also known as:

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

    ICD-10 Codes:

    • J069: Acute upper respiratory infection, unspecified

    Also known as:

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

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Dehydration
    • Fluid and Electrolyte Balance
    • Lack of Fluids
    • Fluid Loss
    • Body Water Depletion

    ICD-10 Codes:

    • E860: Dehydration

    Also known as:

    • COPD Flare-Up
    • COPD
    • COPD Exacerbation
    • Chronic Obstructive Pulmonary Disease Flare-Up
    • Worsening COPD
    • COPD Attack

    ICD-10 Codes:

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

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Fainting
    • Syncope
    • Passing out
    • Collapse

    ICD-10 Codes:

    • R55: Syncope and collapse

    Also known as:

    • Constipation
    • Difficulty Passing Stool
    • Infrequent Bowel Movements
    • Hard Stools

    ICD-10 Codes:

    • K5900: Constipation, unspecified

    Also known as:

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

    ICD-10 Codes:

    • F419: Anxiety disorder, unspecified

    Also known as:

    • Flu with Respiratory Symptoms
    • Flu
    • Influenza with Breathing Problems
    • Flu with Cough
    • Severe Flu

    ICD-10 Codes:

    • J101: Influenza due to other identified influenza virus with other respiratory manifestations

    Also known as:

    • Pneumonia
    • Lung Infection
    • Chest Infection
    • Pneumonitis

    ICD-10 Codes:

    • J189: Pneumonia, unspecified organism

    Also known as:

    • Abdominal Pain
    • Stomach Ache
    • Belly Pain
    • Stomach Pain

    ICD-10 Codes:

    • R109: Unspecified abdominal pain

    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:

    • Nausea and Vomiting
    • Feeling Sick and Throwing Up
    • Stomach Flu Symptoms
    • Queasy and Vomiting

    ICD-10 Codes:

    • R112: Nausea with vomiting, unspecified

    Also known as:

    • Sepsis
    • Blood Poisoning
    • Septicemia
    • Systemic Bacterial Infection

    ICD-10 Codes:

    • A419: Sepsis, unspecified organism

    Also known as:

    • Headache
    • Head pain
    • Cephalalgia
    • Tension headache

    ICD-10 Codes:

    • R519: Headache, unspecified

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

    As a Family Medicine Specialist, procedures performed by a Dr. Gary Underhill may include:

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

    Does Dr. Underhill accept my insurance?

    Dr. Underhill accepts most major insurance plans. Important: Please call our office at (509) 382-2531 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Underhill accept in Dayton, WA?

    Dr. Underhill in Dayton, WA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Cambia (Regence)

    • Centene

    • Community Health Plan of Washington

    • CVS Health (formerly Aetna)

    • Department of Veterans Affairs

    • Medicare

    • Molina

    • Premera Blue Cross

    • State of Washington

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Underhill's office located?

    Dr. Gary Underhill's Primary Practice

    1012 S 3rd St

    Dayton, WA 99328

    (509) 382-2531

    Get Directions

    Dr. Gary Underhill's Practice 2

    1025 S 2nd Ave

    Walla Walla, WA 99362

    Get Directions

    Dr. Gary Underhill's Practice 3

    3810 Plaza Way

    Kennewick, WA 99338

    (509) 737-1492

    Get Directions

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

    Dr. Underhill's National Provider Identifier (NPI) number is 1851375265.

    What common questions do patients ask about Dr. Underhill?

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

    What is Dr. Gary Underhill's specialty?

    Dr. Underhill is a Family Medicine Specialist near Dayton, WA. 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. Underhill to book an appointment today.

    Is this Dr. Gary Underhill affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Underhill is affiliated with Trios Southridge 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 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 Gary Underhill accepting new patients in Dayton, WA?

    Yes, Dr. Gary Underhill is accepting new patients at this time.

    Does Dr. Gary Underhill offer online booking?

    Please contact Dr. Underhill's office at (509) 382-2531 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Gary Underhill?

    Please contact Dr. Underhill's office at (509) 382-2531 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Gary Underhill have?

    Dr. Gary Underhill is certified by the American Board of Family Medicine.

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