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Wellstar Internal Medicine Associates of Marietta

355 Tower Road NE
Suite 300
Marietta, GA 30060

  • Wellstar Internal Medicine Associates of Marietta
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(770) 427-2457 Book Now COVID-19 Info

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About Us

About Us

Wellstar locations at 355 Tower Rd

At Internal Medicine Associates of Marietta, one of the oldest medical practices in Cobb County, our practice has now been serving the community for more than 65 years. Our healthcare team has continued the legacy of treating each patient with respect, compassion and world-class care. Our comprehensive in-office services include first, second and third class flight physicals, and full lab services.
(770) 427-2457 Book Now COVID-19 Info
Meet our Team

Eric Nelson, LCSW

Licensed Clin. Social Worker with Wellstar since 2018.

Specialties
Psychiatry
Learn More
Peter Trottier, MD

Primary Care Physician with Wellstar since 2005.

Specialties
Family Medicine
Learn More Book Appointment
Macy Mantooth, PA

Physician Assistant with Wellstar since 2024.

Specialties
Internal Medicine
Learn More
Lindsey Parrish, LCSW

with Wellstar since 2021.

Specialties
Licensed Clin. Social Worker
Learn More
Jie Liu, MD

Internist with Wellstar since 2016.

Specialties
Internal Medicine
Learn More Book Appointment
Maggie Mackenzie, NP

Nurse Practitioner with Wellstar since 2022.

Specialties
Internal Medicine
Learn More Book Appointment
Elizabeth Aaron, PA

Physician Assistant with Wellstar since 2019.

Specialties
Internal Medicine
Learn More Book Appointment
Ryan Cantwell, MD

Internist with Wellstar since 2000.

Specialties
Internal Medicine
Learn More Book Appointment
David Cantrell, MD

Internist with Wellstar since 1994.

Specialties
Internal Medicine
Learn More Book Appointment
Julia Williams, NP

Nurse Practitioner with Wellstar since 2023.

Specialties
Family Medicine
Learn More Book Appointment
Adam Albano, MD

Internist with Wellstar since 2018.

Specialties
Internal Medicine
Learn More Book Appointment
Joseph Bush, MD

Internist with Wellstar since 2021.

Specialties
Internal Medicine
Learn More Book Appointment
See More Results

Meet our Team

Eric Nelson, LCSW

Licensed Clin. Social Worker with Wellstar since 2018.

Specialties
Psychiatry
Learn More
Peter Trottier, MD

Primary Care Physician with Wellstar since 2005.

Specialties
Family Medicine
Learn More Book Appointment
Macy Mantooth, PA

Physician Assistant with Wellstar since 2024.

Specialties
Internal Medicine
Learn More
Lindsey Parrish, LCSW

with Wellstar since 2021.

Specialties
Licensed Clin. Social Worker
Learn More
Jie Liu, MD

Internist with Wellstar since 2016.

Specialties
Internal Medicine
Learn More Book Appointment
Maggie Mackenzie, NP

Nurse Practitioner with Wellstar since 2022.

Specialties
Internal Medicine
Learn More Book Appointment
Elizabeth Aaron, PA

Physician Assistant with Wellstar since 2019.

Specialties
Internal Medicine
Learn More Book Appointment
Ryan Cantwell, MD

Internist with Wellstar since 2000.

Specialties
Internal Medicine
Learn More Book Appointment
David Cantrell, MD

Internist with Wellstar since 1994.

Specialties
Internal Medicine
Learn More Book Appointment
Julia Williams, NP

Nurse Practitioner with Wellstar since 2023.

Specialties
Family Medicine
Learn More Book Appointment
Adam Albano, MD

Internist with Wellstar since 2018.

Specialties
Internal Medicine
Learn More Book Appointment
Joseph Bush, MD

Internist with Wellstar since 2021.

Specialties
Internal Medicine
Learn More Book Appointment

Eric Nelson, LCSW

Licensed Clin. Social Worker with Wellstar since 2018.

Specialties
Psychiatry
Education
Master of Social Work

Peter Trottier, MD

Primary Care Physician with Wellstar since 2005.

Specialties
Family Medicine
Education
Doctor of Medicine
Patient Rating

Dr. Peter Trottier received his bachelor’s degree in biology from Quinnipiac College in Hamden, Conn. Dr. Trottier received his medical degree from Morehouse School of Medicine in Atlanta, Ga. He completed his family medicine residency at Middlesex Memorial Hospital University of Connecticut in Middletown, Conn.

Dr. Trottier is board certified in family medicine. He is a member of the American Medical Association and American Academy of Family Physicians.

Dr. Trottier currently is in practice with Wellstar Internal Medicine Associates of Marietta.

Macy Mantooth, PA

Physician Assistant with Wellstar since 2024.

Specialties
Internal Medicine
Education
Master of Medical Science
Patient Rating

Lindsey Parrish, LCSW

with Wellstar since 2021.

Specialties
Licensed Clin. Social Worker
Education
Master of Social Work

Jie Liu, MD

Internist with Wellstar since 2016.

Specialties
Internal Medicine
Education
Doctor of Medicine
Patient Rating

Dr. Helen Liu received her medical degree from Tianjin Medical University School of Medicine in Tianjin, China. She completed her residency at Saint Mary’s Hospital in Waterbury, CT.

Dr. Liu is a member of the American College of Physicians and is board certified in internal medicine.

She is currently in practice with Wellstar Internal Medicine.

Maggie Mackenzie, NP

Nurse Practitioner with Wellstar since 2022.

Specialties
Internal Medicine
Education
Family Nurse Practitioner
Patient Rating

Elizabeth Aaron, PA

Physician Assistant with Wellstar since 2019.

Specialties
Internal Medicine
Education
Physician Assistant
Patient Rating

Ryan Cantwell, MD

Internist with Wellstar since 2000.

Specialties
Internal Medicine
Education
Doctor of Medicine
Patient Rating

Dr. Ryan V. Cantwell is a fourth generation physician and native Atlantan. Within the field of primary care medicine, he particularly enjoys prevention, sports medicine and fitness, as well as participating in short-term overseas medical missions. As an Aviation Medical Examiner, he does Class I,II and III flight physicals for the Federal Aviation Administration. After his undergraduate training at Duke University in North Carolina, he earned his Doctorate in Medicine from Morehouse School of Medicine in Atlanta, GA.

He was recognized by the National Committee for Quality Assurance (NCQA)’s Bridges to Excellence program for their quality diabetes care and management. The Bridges to Excellence program is designed to create significant leaps in the quality of care by recognizing and rewarding healthcare providers who demonstrate that they have implemented comprehensive solutions in the management of patients and deliver safe, timely, effective, efficient, equitable and patient-centered care.

David Cantrell, MD

Internist with Wellstar since 1994.

Specialties
Internal Medicine
Education
Doctor of Medicine
Patient Rating

Prior to partnering with Dr. William L. Cousins in 1994, Dr. David M. Cantrell practiced medicine in Kennesaw and LaGrange, Ga. He received his bachelor’s degree in Pharmacy from Mercer University in Atlanta and earned his Doctorate in Medicine at Mercer University School of Medicine in Macon. He completed his Internal Medicine residency at the Erlanger Medical Center affiliated with the University of Tennessee College of Medicine located in Chattanooga, Tenn. Dr. Cantrell is board certified in Internal Medicine and a member of the Cobb County Medical Society and the Medical Association of Georgia.
 
 
He was recognized by the National Committee for Quality Assurance (NCQA)’s Bridges to Excellence program for their quality diabetes care and management. The Bridges to Excellence program is designed to create significant leaps in the quality of care by recognizing and rewarding healthcare providers who demonstrate that they have implemented comprehensive solutions in the management of patients and deliver safe, timely, effective, efficient, equitable and patient-centered
 
 

Julia Williams, NP

Nurse Practitioner with Wellstar since 2023.

Specialties
Family Medicine
Education
Master of Science in Nursing
Patient Rating

Adam Albano, MD

Internist with Wellstar since 2018.

Specialties
Internal Medicine
Education
Doctor of Medicine
Patient Rating

Joseph Bush, MD

Internist with Wellstar since 2021.

Specialties
Internal Medicine
Education
Doctor of Medicine
Patient Rating

Helpful Information for your next visit.

  • Appointments and Cancellations
  • Directions
  • Hospitalization
  • Insurance and Payments
  • Practice News
  • Prescription Refills
  • Printable Office Forms
  • Referrals
Appointments and Cancellations
To schedule an appointment please call our appointment line: (770) 427-2457.

Our phones are open between the hours of 7:30am to 4:00pm.

If you would like to request a non-urgent appointment or cancel an appointment more than 2 business days in advance, we offer online appointment requests by clicking the link on this web page.

We request a 24 hour cancellation notice for all appointments.
Directions
From I-75: Take the Canton Road exit (#267B). Travel southbound on the Canton Road Connector (towards Church Street). Turn right at the second light onto Tower Road (Wellstar Kennestone Hospital is on the left). Our building, 355 Tower Road, is 0.5 miles west (toward Kennesaw Mountain) on your left.
 
Parking:
There is free parking beside and underneath our building.
Hospitalization
Our doctors have privileges at Kennestone Hospital. If you are admitted as an in-patient at Kennestone Hospital, you will be seen by a Hospitalist physician who will communicate with your Primary Care Physician.

A Hospitalist is a physician who specializes in caring for patients in the hospital 24 hours a day. They are Board Certified Internal Medicine Physicians who will be responsible for your care from admission through discharge.
Insurance and Payments
We are committed to meeting your health care needs. Our goal is to keep your insurance or other financial arrangements as simple as possible.

Wellstar Medical Group participates in most major insurance plans. For a complete list of insurance participants at this practice please call the practice main line. We will file your insurance for you if we are a participating provider of your plan.

All co-payments are due at the time of service. Please remember to bring your insurance card (HMO, CMO, PPO, etc.) with you to each appointment.
Practice News
Contact this location for more information.
Prescription Refills
The quickest way to obtain a refill is to contact your pharmacy and have them electronically request your prescription.

Prescriptions will be filled within 48-72 hours.

Prescriptions for controlled substances will have to be picked up directly from our office and will require a signature for retrieval.

If you would like to request a refill online you may click on the prescription refill link below.
Printable Office Forms

Authorization for Release of PHI
Authorization for Release of PHI Spanish
Patient Registration Packet
MyChart Adult Proxy
MyChart Child Proxy
MyChart Teen Proxy
Notice of Privacy Practices Acknowledgement
Notice of Privacy Practices Acknowledgement Spanish
Patient Communication Designation
Patient Communication Designation Spanish
Patient Registration
Patient Registration Spanish
Referrals
If you would like to request a referral, please call our referral line at (678) 290-4902.

Referrals will be complete within 72 hours. Emergencies will be handled on a priority basis.

If you would like to request a referral on line you may click on the referral link below.
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