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Dr. Timmothy Merrigan, MD

Dr. Timmothy Merrigan, MD

Family Medicine Specialist

Walnut Creek, CA

24 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Merrigan, Family Medicine Specialist in Walnut Creek, CA?

    Dr. Timmothy Merrigan, MD is a Family Medicine Specialist, who primarily practices in Walnut Creek, CA with 1 additional practice location. He has been practicing for over 24 years and is board certified. Dr. Merrigan graduated from Medical College of Wisconsin and completed his residency at San Joaquin Gen Hosp, Family Medicine; Kaiser Fndn Hosp-Los Angeles, General Surgery. Dr. Merrigan is fluent in English, and is currently seeing new patients. Dr. Merrigan’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Merrigan’s office at (924) 906-2326.

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

    • Residency: San Joaquin Gen Hosp, Family Medicine; Kaiser Fndn Hosp-Los Angeles, General Surgery | San Joaquin General Hospital

    • Medical School: Med Coll of Wi, Milwaukee Wi | Medical College of Wisconsin

    Is Dr. Merrigan board certified as a Family Medicine Specialist?

    Yes, Dr. Timmothy Merrigan, MD is board certified by the American Board of Family Medicine

    What languages does Dr. Merrigan speak?

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

    • English

    What conditions does a Family Medicine Specialist like Dr. Merrigan typically treat?

    As a Family Medicine Specialist, Dr. Merrigan 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. Merrigan. 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. Learn more about our claims-based healthcare methodology.

    Also known as:

    • Special Medical Examination
    • Specific health check
    • Detailed medical assessment
    • Special health screening

    ICD-10 Codes:

    • Z0189: Encounter for other specified special examinations

    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:

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

    ICD-10 Codes:

    • Z23: Encounter for immunization

    Also known as:

    • High Blood Pressure Heart Disease with Heart Failure
    • Heart Failure
    • High Blood Pressure
    • Hypertensive Heart Failure
    • High Blood Pressure Causing Heart Failure

    ICD-10 Codes:

    • I110: Hypertensive heart disease with heart failure

    Also known as:

    • Pneumonia
    • Lung Infection
    • Chest Infection
    • Pneumonitis

    ICD-10 Codes:

    • J189: Pneumonia, unspecified organism

    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:

    • High Blood Pressure Heart and Kidney Disease with Heart Failure
    • Chronic Kidney Disease
    • Heart Failure
    • High Blood Pressure
    • Hypertensive Cardiorenal Syndrome
    • Heart and Kidney Failure from High Blood Pressure

    ICD-10 Codes:

    • I130: Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    What procedures does a Family Medicine Specialist like Dr. Merrigan typically perform?

    As a Family Medicine Specialist, procedures performed by Dr. Timmothy Merrigan may include:

    Please contact Dr. Merrigan's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.

    Does Dr. Merrigan accept my insurance?

    Dr. Merrigan accepts most major insurance plans. Important: Please call our office at (924) 906-2326 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Merrigan accept in Walnut Creek, CA?

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

    Top Insurances

    • Kaiser Permanente

    • Medicare

    View All Insurances

    Where is Dr. Merrigan's office located?

    Dr. Timmothy Merrigan's Primary Practice

    320 Lennon Ln

    Walnut Creek, CA 94598

    (924) 906-2326

    Get Directions

    Dr. Timmothy Merrigan's Practice 2

    901 Nevin Ave

    Richmond, CA 94801

    Get Directions

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

    Dr. Merrigan's National Provider Identifier (NPI) number is 1063442945.

    What common questions do patients ask about Dr. Merrigan?

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

    What is Dr. Timmothy Merrigan's specialty?

    Dr. Merrigan is a Family Medicine Specialist near Walnut Creek, CA.

    What does a Family Medicine Specialist do?

    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.

    Is Dr. Timmothy Merrigan affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Merrigan is affiliated with Kaiser Permanente Oakland Medical Center, Kaiser Permanente San Leandro Medical Center, Kaiser Permanente Fresno Medical Center 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

    When to see a Family Medicine Specialist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Family Medicine Specialist. Explore 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 Dr. Timmothy Merrigan accepting new patients in Walnut Creek, CA?

    Yes, Dr. Timmothy Merrigan is accepting new patients at this time.

    Does Dr. Timmothy Merrigan offer online booking?

    Please contact Dr. Merrigan's office at (924) 906-2326 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. Timmothy Merrigan?

    Please contact Dr. Merrigan's office at (924) 906-2326 to schedule an appointment.

    Where is Dr. Merrigan's office located?

    Dr. Merrigan's offices are located in Walnut Creek, CA and Richmond, CA.

    Which board certifications does Dr. Timmothy Merrigan have?

    Dr. Timmothy Merrigan is certified by the American Board of Family Medicine.