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Andrea Merizalde, MD

  • Internal Medicine
  • Patient Portal
  • Location Information Primary Location
    Memorial Internal Medicine - Oak Park
    1717 Oak Park Blvd.
    Lake Charles, LA 70601
    Hours
    • Mon-Fri: 8:00 AM - 5:00 PM
      Sat-Sun: Closed

      Please call 337.494.6800 for more information.

Meet Andrea Merizalde, MD

Andrea Merizalde, MD, is an internal medicine physician at Memorial Internal Medicine – Oak Park. Fluent in English and Spanish, Dr. Merizalde brings extensive experience caring for adults in outpatient, hospital and emergency settings, with a focus on providing comprehensive, personalized care for a wide range of health needs. 

As a primary care physician, Dr. Merizalde provides preventive care, routine wellness visits and diagnosis and treatment of acute and chronic conditions. Her broad clinical background allows her to help patients manage their health over time, from addressing everyday illnesses to managing conditions such as hypertension, diabetes and high cholesterol, while connecting patients with specialty care when needed. 

Originally from Ecuador, Dr. Merizalde earned her medical degree from Pontificia Universidad Católica del Ecuador in Quito. Before continuing her medical training in the United States, she practiced medicine in Ecuador for 10 years. Her experience includes a year of rural medicine, where she cared for patients in communities with limited medical resources and participated in public health initiatives, including vaccination campaigns. She later completed her internal medicine training at Baptist Hospital of Southeast Texas in Beaumont. Her passion for medicine was inspired by her father, an internal medicine physician, as well as several other physicians in her extended family. 

Dr. Merizalde is accepting new patients at Memorial Internal Medicine, located at 1717 Oak Park Boulevard on the 1st floor. To schedule an appointment with Dr. Merizalde, please call 337-494-6800. 

Specialties: 

  • Acute and chronic disease management for adults 
  • Acute Illness 
  • Cardiovascular disease 
  • Diabetes management 
  • High blood pressure 
  • High cholesterol 
  • Lifestyle medicine 
  • Musculoskeletal injuries 
  • Wellness/preventative care 
Education
  • Medical School
  • Pontifical Catholic University of Ecuador
    Quito, Ecuador2005
  • Residency
  • Baptist Hospital of Southeast Texas - Internal Medicine Residency
    Beaumont, TX
    2026
Insurances Accepted:
  • Aetna Health Inc., 
  • Blue Cross / Blue Shield, 
  • Cigna Health And Life Insurance Company, 
  • Hmo Louisiana, Inc., 
  • Humana, 
  • IMA, 
  • Louisiana Health Service & Indemnity Company, 
  • Meritain Health, 
  • Office Of Group Benefits, 
  • Other, 
  • Self Insured, 
  • United Health Care, 
  • United Medical Resources, 
  • Vantage Health Plan, Inc.
Frequently Asked Questions
I'm a new patient. Can I fill out the paperwork before my appointment?
To help prepare for your first appointment, you can download and print new patient paperwork prior to your visit. Please click Download under Patient Forms above. If you are not able to to do this before your visit, you can fill out paperwork in the office. Please note: some clinics may have other specific forms for new patients in addition to the forms above.
It's my first visit, do I need my medical records from my previous doctor(s)?
If you have seen another physician, it is helpful to have his/her previous office records. A consent for the release of information must be signed and then we can request records from your previous physician.
Do you need my insurance information at the time of my visit?
Yes, we require your insurance card at time of service. We will file all claims to our participating insurance groups. Payment of insurance co-pays, deductibles, and all fees NOT covered by your insurance company are expected at the time of service. Fees may be paid by cash, check or credit card.
Do you need my insurance information at the time of my visit?
Yes, we require your insurance card at time of service. We will file all claims to our participating insurance groups. Payment of insurance co-pays, deductibles, and all fees NOT covered by your insurance company are expected at the time of service. Fees may be paid by cash, check or credit card.
If I call with a question for the nurse or doctor, when can I expect a callback?
Our physicians and nurses are with patients throughout the day, so it is usually not possible for them to immediately answer phone calls. We will return your call as soon as possible. To help us get back to you quickly leave your full name, date of birth, reason for the call and current phone number.
I have a question about my bill. Who do I contact?
Your Memorial Medical Group bill includes charges for goods and services rendered by your physician. Depending on your care, you may receive separate bills for services such as X-rays or lab work. You may contact our financial services department at 337.494.3265 with any questions or concerns about your bill or to pay your bill by phone. You may also visit the billing and financial services office located at 3050 Aster Street in Lake Charles. It is open Monday – Friday from 8:00 am to 4:30 pm.
I need to change my appointment. Who do I need to contact?
To make changes to your appointment, please contact your physician's office. For each physician's contact information, click here.
I would like to access my medical records. How do I do that?
Yes, we require your insurance card at time of service. We will file all claims to our participating insurance groups. Payment of insurance co-pays, deductibles, and all fees NOT covered by your insurance company are expected at the time of service. Fees may be paid by cash, check or credit card.
Do you need my insurance information at the time of my visit?
Medical records can be accessed through the Follow My Health or the My MMG patient portals. You can request a copy of your medical records by calling 337.494.3149 or faxing a request to 337.494.3148. To learn more about accessing your records or to complete a Request for Information, click here.