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CHI Memorial Internal Medicine Associates - Hixson Pike

Accepting New Patients

3739 Hixson Pike, Chattanooga, TN 37415
(423) 875-0999

Office hours: Monday - Friday, 8 a.m. - 4:30 p.m. 

CHI Memorial Internal Medicine Associates - Hixson Pike provides comprehensive care for  patients ages 18 and older. Our providers  emphasize disease prevention by  focusing on treating the whole person. Our goal is to provide comfortable,  convenient and prompt care to help you get well and stay well. 

Derek Crouthers, MD, Jeremy Hogstrom, DO, Jermaine Hogstrom, DO and Mario Mariani, MD, welcome new patients. To schedule an appointment with one of our physicians, call (423) 875-0999.

Our Team

Dr. Derek Crouthers

Family Medicine Specialist

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Dr. Jeremy Hogstrom

Internal Medicine Specialist

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Dr. Jermaine Hogstrom

Internal Medicine Specialist

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Dr. Mario Mariani

Internal Medicine Specialist

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Online Check In

Did you know that our practice allows you to check in online ahead of time? You can confirm your appointment via text message or email, and check in online prior to your visit. You can also check in on your own device when you arrive. Ask us about using mobile registration to make your next visit simpler and faster!

We are partnering with Phreesia to help you save time registering for your appointment. Use mobile check-in to register from any smartphone, tablet or computer from the privacy of your own home. Checking in on your device saves you time and ensures your information is always up to date!

Patient Portal

We care about our patients. Our goal is to provide you and your family with the best experience possible when interacting with our practice. We understand that it is not always possible to visit the clinic, leave message, wait on the phone, or update your personal health information. By offering online access to your health information we look forward to simplifying your healthcare experience.

Helpful Information

Bring a list of all of your medications (over-the-counter, vitamins, natural or herbal) along with the dosage and directions to every visit with your provider. Bring a list of your health concerns for your provider to address. Bring a list of the names, date of treatment(s), and contact information of any health care provider previously seen.

  • Please arrive 30 minutes prior to your appointment time. Our goal is to have you in the exam room at your appointment time. Thank you for your assistance in helping us make our office run smoothly. 
  • Questions for the provider - Please review  your list of questions and ensure the top three  were addressed during your visit.
  • Late Arrival for Appointments -To help with our appointment wait times, we ask that you are no more than 10  minutes late to your appointment. We realize emergencies, traffic, etc., can happen occasionally, and we always try to accommodate you when we can.
  • After Hours -Only emergent issues will be addressed. Please make an appointment for medical concerns. Prescriptions are limited after hours.
  • Follow-up Appointments - Please schedule your follow-up appointment prior to leaving the office.
  • Canceling Appointments - Please notify us no later than 48 hours of a cancellation. Appointments not canceled prior to 48 hours are subject to a cancellation fee of $50. Canceled appointments help us ensure availability for patients who need urgent care, therefore please inform us of canceled appointment.

If you have lab work or testing performed during your visit, please do not call the office for your results. The nurse will call you regarding the results within 10 business days. If you have additional questions please, schedule an appointment to review the results. Please do not call the office unless you have not received results after 10 business days.

Please select your nurse’s line for medication refills, delayed lab/test results or non-urgent health concerns. Please speak clearly and slowly and provide your full name, including spelling of name, phone number, date of birth, and reason for call. If the message is referring to prescription refill, please provide medication, dosage, pharmacy name and phone number. Nonprescription messages must include symptoms, onset of health issue and home remedies you have tried.


Messages are retrieved from 8 a.m. to 4 p.m. - All messages are addressed within the day of the call. Messages after 4 p.m. will be addressed the following business day. Urgent prescription refills will be returned to the pharmacy only, therefore please check with your pharmacy. Please do not call multiple times, our goal is to provide medical assistance to all of our patients and your call will be returned promptly. In the event you have not received a; response after 72 hours, please contact the practice manager at  (423) 875-0999.

Patient Rights

  • Access to considerate and respectful staff
  • Access to the roles of staff providing treatment and information about your health care 
  • Access to your medical records, which require a 24 hour notice and a written form for release
  • Access to health care rules and regulations that affect you, your treatment, charges, and  payments
  • The ability to consent or refuse treatment, as permitted by law

Your health information is kept confidential unless written consent is provided, preexisting  guidelines established with healthcare  insurance, or in case of a medical emergency.

Patient Responsibilities
Providing information about your health, medication, insurance, contact information, past illness, hospital stays, family or social history that may impact treatment or medication, and payment of fees not covered by insurance.

Update your personal information - Please bring your insurance cards, driver’s license and any documentation regarding change of legal name. Ensure address, phone number emergency contact and email address are up to date. We use the information in our system for appointment reminders and lab results. It is important to ensure all information is correct.

Prior Authorization, FMLA, Disability or other legal forms - Bring your insurance company’s Prior Authorization form with you to all appointments. Bring FMLA, Disability or Medical Supply forms with you at your next appointment. Allow 72 hours after the appointment to complete the forms. Please arrange for pick-up of all forms. In the event of a denial for prior authorization for procedure, medication, etc. please contact your insurance company for additional information. 

Please notify the provider of all medications requiring refills during your scheduled appointment. All refills are subject to provider approval. Refills for a controlled substance must be provided at an appointment every 30 days. No refills for controlled substance will be filled outside of your appointment. All after hours refills (except controlled substances) will be limited to a 3 day supply. Please schedule an appointment to obtain your medication refills.

CHI Memorial Internal Medicine Associates - Hixson Pike