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Dr. Thomas Welsh, MD

Mesa, AZ

41 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Welsh, Internist in Mesa, AZ?

    Dr. Thomas Welsh, MD is an Internist, who primarily practices in Mesa, AZ with 1 additional practice location. He has been practicing for over 41 years and is board certified by the American Board of Internal Medicine. Dr. Welsh completed his residency at U Tx Sw Med Ctr Affil Hsps, Internal Medicine; Dallas Co Hp-Parkland Mem, Internal Medicine. Dr. Welsh is fluent in English, and is currently seeing new patients. Dr. Welsh’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Welsh’s office at (480) 728-4100.

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

    • Residency: U Tx Sw Med Ctr Affil Hsps, Internal Medicine; Dallas Co Hp-Parkland Mem, Internal Medicine

    • Medical School: University of Az Collage of Medicine

    Is Dr. Welsh board certified in Internist?

    Yes, Dr. Thomas Welsh, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Welsh speak?

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

    • English

    What conditions does Dr. Welsh treat?

    As a Internist, Dr. Welsh 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. Welsh. 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:

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

    ICD-10 Codes:

    • J069: Acute upper respiratory infection, unspecified

    Also known as:

    • Acute Bronchitis
    • Chest cold
    • Short-term bronchitis
    • Acute chest infection

    ICD-10 Codes:

    • J209: Acute bronchitis, 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:

    • Stuffy Nose
    • Nose Injuries and Disorder
    • Blocked nose
    • Nasal congestion
    • Congested nose

    ICD-10 Codes:

    • R0981: Nasal congestion

    Also known as:

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

    ICD-10 Codes:

    • J029: Acute pharyngitis, unspecified

    Also known as:

    • Unvaccinated for COVID-19
    • COVID-19 Vaccines
    • No COVID-19 vaccine
    • Never received COVID-19 vaccine
    • Not immunized against COVID-19

    ICD-10 Codes:

    • Z28310: Unvaccinated for COVID-19

    Also known as:

    • Ear Infection
    • Otitis Media
    • Middle Ear Infection
    • Ear Inflammation

    ICD-10 Codes:

    • H6692: Otitis media, unspecified, left ear
    • H6691: Otitis media, unspecified, right ear
    • H6693: Otitis media, unspecified, bilateral

    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:

    • 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:

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

    ICD-10 Codes:

    • B349: Viral infection, unspecified

    Also known as:

    • Tonsillitis
    • Inflamed Tonsils
    • Tonsil Infection
    • Sore Tonsils

    ICD-10 Codes:

    • J0390: Acute tonsillitis, unspecified

    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:

    • Other General Symptoms
    • Non-specific health complaints
    • Various symptoms
    • Unexplained health issues

    ICD-10 Codes:

    • R6889: Other general symptoms and signs

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Cough
    • Coughing
    • Persistent cough
    • Chronic cough

    ICD-10 Codes:

    • R059: Cough, unspecified

    Also known as:

    • Asthma
    • Reactive Airway Disease
    • Bronchial Asthma
    • Allergic Asthma

    ICD-10 Codes:

    • J45909: Unspecified asthma, uncomplicated

    Also known as:

    • Viral Intestinal Infection
    • Gastroenteritis
    • Viral Infection
    • Viral Gastroenteritis (Stomach Flu)
    • Viral stomach flu
    • Viral enteritis
    • Viral gut infection

    ICD-10 Codes:

    • A084: Viral intestinal infection, unspecified

    Also known as:

    • Cigarette Addiction
    • Smoking
    • Smoking Addiction
    • Nicotine Dependence from Cigarettes
    • Tobacco Addiction

    ICD-10 Codes:

    • F17210: Nicotine dependence, cigarettes, uncomplicated

    Which procedures does Dr. Welsh perform as a Internist?

    As a Internist, procedures performed by an Dr. Thomas Welsh may include:

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

    Does Dr. Welsh accept my insurance?

    Dr. Welsh accepts most major insurance plans. Important: Please call our office at (480) 728-4100 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Welsh accept in Mesa, AZ?

    Dr. Welsh in Mesa, AZ accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Alignment Health Plan

    • Banner Health

    • CVS Health (formerly Aetna)

    • Express Scripts

    • Medicare

    • OptumRx

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Welsh's office located?

    Dr. Thomas Welsh's Primary Practice

    2550 N Thunderbird Cir Ste 303

    Mesa, AZ 85215

    (480) 728-4100

    Get Directions

    Dr. Thomas Welsh's Practice 2

    1501 N Gilbert Rd

    Gilbert, AZ 85234

    Get Directions

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

    Dr. Welsh's National Provider Identifier (NPI) number is 1487604740.

    What common questions do patients ask about Dr. Welsh?

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

    What is Dr. Thomas Welsh's specialty?

    Dr. Welsh is a Internist near Mesa, AZ.

    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. Welsh to book an appointment today.

    Is this Dr. Thomas Welsh affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Welsh is affiliated with Chandler Regional Medical Center 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 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 Thomas Welsh accepting new patients in Mesa, AZ?

    Yes, Dr. Thomas Welsh is accepting new patients at this time.

    Does Dr. Thomas Welsh offer online booking?

    Please contact Dr. Welsh's office at (480) 728-4100 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Thomas Welsh?

    Please contact Dr. Welsh's office at (480) 728-4100 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Thomas Welsh have?

    Dr. Thomas Welsh is certified by the American Board of Internal Medicine.

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