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Dr. Mark Lacy, MD

Dr. Mark Lacy, MD

Great Falls, MT

36 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Lacy, Infectious Disease Specialist in Great Falls, MT?

    Dr. Mark Lacy, MD is an Infectious Disease Specialist, who primarily practices in Great Falls, MT with 2 additional practice locations. He has been practicing for over 36 years and is board certified by the American Board of Internal Medicine and American Board of Pediatrics. Dr. Lacy completed his residency at West Virginia Univ Hosps, Infectious Diseases; West Virginia Univ Hosps, Internal Medicine. Dr. Lacy is fluent in English, German, and Spanish, and is currently seeing new patients. Dr. Lacy’s practice accepts Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Lacy’s office at (806) 743-2898.

    What are Areas of Expertise for Dr. Lacy?

    Dr. Mark Lacy, MD is a highly-rated, board-certified Infectious Disease Specialist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Lacy empowers patients to confidently navigate their health journey, specializing in HIV/AIDS, Travel Medicine, or comprehensive wellness support. Serving the Great Falls/MT community, Dr. Lacy is dedicated to enhancing lives through expert, patient-centered care.

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

    • Residency: West Virginia Univ Hosps, Infectious Diseases; West Virginia Univ Hosps, Internal Medicine

    • Medical School: University of Az Collage of Medicine

    Is Dr. Lacy board certified in Infectious Disease Specialist?

    Yes, Dr. Mark Lacy, MD is board certified by the American Board of Internal Medicine , American Board of Pediatrics

    What languages does Dr. Lacy speak?

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

    • English

    • German

    • Spanish

    What conditions does Dr. Lacy treat?

    As a Infectious Disease Specialist, Dr. Lacy 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. Lacy. 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:

    • Other Long-Term Drug Therapy
    • Long-Term Antibiotic Use
    • Antibiotics
    • Chronic medication use
    • Ongoing drug treatment
    • Extended drug therapy
    • Chronic antibiotic therapy
    • Ongoing antibiotic treatment
    • Extended antibiotic use

    ICD-10 Codes:

    • Z79899: Other long term (current) drug therapy
    • Z792: Long term (current) use of antibiotics

    Also known as:

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

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Routine Child Health Examination (Normal Findings)
    • Health Checkup
    • Normal Well-Child Checkup
    • Child Physical Exam (No Issues)
    • Routine Pediatric Exam (Clear)

    ICD-10 Codes:

    • Z00129: Encounter for routine child health 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 Cholesterol
    • Cholesterol
    • Triglycerides
    • Hyperlipidemia
    • High lipids
    • Dyslipidemia

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    Also known as:

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

    ICD-10 Codes:

    • N390: Urinary tract infection, site not specified

    Which procedures does Dr. Lacy perform as a Infectious Disease Specialist?

    Does Dr. Lacy accept my insurance?

    Dr. Lacy accepts most major insurance plans. Important: Please call our office at (806) 743-2898 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Lacy accept in Great Falls, MT?

    Dr. Lacy in Great Falls, MT accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • All Other Third Party

    • Department of Defense / Tricare

    • Department of Veterans Affairs

    • Group Health Cooperative

    • Health Care Service Corporation (HCSC)

    • Humana

    • Kaiser Permanente

    • Medicare

    • State of Montana

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Lacy's office located?

    Dr. Mark Lacy's Primary Practice

    3000 15th Ave S

    Great Falls, MT 59405

    (806) 743-2898

    Get Directions

    Plaza 2

    202 N Division St Ste 400

    Auburn, WA 98001

    Get Directions

    Dr. Mark Lacy's Practice 3

    316 Martin Luther King Jr Way Ste 401

    Tacoma, WA 98405

    Get Directions

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

    Dr. Lacy's National Provider Identifier (NPI) number is 1134177215.

    What common questions do patients ask about Dr. Lacy?

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

    What is Dr. Mark Lacy's specialty?

    Dr. Lacy is a Infectious Disease Specialist near Great Falls, MT.

    An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

    Contact Dr. Lacy to book an appointment today.

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

    Yes, Dr. Lacy is affiliated with Tucson 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 Infectious Disease Specialist?

    Explore Infectious Disease 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 Lacy accepting new patients in Great Falls, MT?

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

    Does Dr. Mark Lacy offer online booking?

    Please contact Dr. Lacy's office at (806) 743-2898 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Mark Lacy?

    Please contact Dr. Lacy's office at (806) 743-2898 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Mark Lacy have?

    Dr. Mark Lacy is certified by the American Board of Internal Medicine and American Board of Pediatrics.

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