Mary Ernst, ANP, FNP, is a board-certified nurse practitioner specializing in urgent care. Mary sees patients of all ages for a variety of acute conditions, including upper respiratory infections, abdominal pain, allergic reactions, bladder and kidney infections, STDs, and skin, eye and ear infections. She also provides treatment for acute orthopedic issues and minor injuries, including sprains, strains, fractures and lacerations. Mary has more than 20 years of experience in the urgent care setting, as well as experience in family practice and plastic surgery. She chose to specialize in urgent and acute care because of the variety of patients and diagnoses she is able to treat. Mary believes every patient should be treated as if they are a member of her own family. She strives to provide each patient with compassionate care and individualized expertise.


  • Family Medicine

    Family medicine doctor or Internist is someone who specializes in diagnosing and treating illnesses, diseases, and health problems. Most internists are also primary care doctors and treat patients on a regular basis. They can diagnose and treat common illnesses or more serious problems. Most people see an internist regularly. Those with chronic illnesses may do so on a monthly or even weekly basis. Internists are the most common types of doctors.

  • Credentials



    8:00AM - 6:00PM


    8:00AM - 6:00PM


    8:00AM - 6:00PM


    8:00AM - 6:00PM


    8:00AM - 6:00PM


    8:00AM - 6:00PM



    Patient reviews of Mary B. Ernst, NP


    FAQs about Mary B. Ernst, Np

    Mary B. Ernst, NP generally accepts new patients.

    Mary B. Ernst, NP has not indicated on the profile that their office offers tele-health visits. You can call their office to find out more about telehealth visits.

    Mary B. Ernst, NP has not indicated on the profile that their office offers same day appointments. You can call their office to find out more about same day appointments.

    You can request appointment via HealthSoul or contact their office.

    The top specialties of Mary B. Ernst, NP include Family Medicine

    You can make payment via cash, credit card or debit card.

    The office is located at 1520 Wentzville Parkway in Wentzville, MO.

    Mary B. Ernst, NP accepts various types of health insurance, but individual coverage may be variable. You should check with your health insurance whether the particular doctor is in network or not.

    Well Child Care, Sinusitis, Acid Reflux, Acne, Adolescent Medicine, Arthritis, Diabetes, Preventive Care, Asthma, Women's Health, Syncope

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