Ada Mercado, MD
Specialties
Cardiovascular Disease
Cardiology
Education & Training
Doctor of Medicine
Ada Mercado, MD
Cardiovascular Disease Specialist with Wellstar since 2010.
Specialties
Cardiovascular Disease
Cardiology
Education & Training
Doctor of Medicine
Office Locations
Expertise
About Ada Mercado, MD
A native of Puerto Rico, Dr. Ada Mercado received her undergraduate degree from InterAmerican University and attended medical school at Pedro Henríquez Ureña. She completed her internal medicine residency in the Mayagüez Medical Center and her cardiovascular disease fellowship at Ponce School of Medicine & Health Sciences St. Luke's Episcopal Hospital. Dr. Mercado then completed an echocardiography fellowship at Tulane and Louisiana State University in New Orleans, LA. She also completed nuclear cardiology training at Emory University in Atlanta.
Dr. Mercado is board-certified in cardiovascular disease. She is a member of the American College of Cardiology and American Echcoardiography Society. Her special interests include general cardiology, transthoracic and transesophageal echocardiogram, and nuclear cardiology.
She joined Wellstar in January 2011 from the Atlanta Heart Center where she was a founding physician in 2002.
Specialties
- Cardiovascular Disease
- Cardiology
Education & Training
- Universidad Nacional Pedro Henriquez Urena
Degree
- Doctor of Medicine
Residency
- Ramon Betances HospitalMayaguez Medical Center
Fellowship
- Emory Healthcare/Emory University Hospital
- LSU Health Sciences Center
- Ponce School of Medicine
Certifications
- National Board of Physicians and Surgeons
Hospital Affiliations
- Wellstar Kennestone Hospital
- Wellstar North Fulton Hospital
- Wellstar Douglas Hospital
- Wellstar Cobb Hospital
Languages spoken
- English
- Spanish
Common Treatments, Conditions, and Procedures
- Atrial Fibrillation (Afib)
- Congestive Heart Failure
- High Blood Pressure
- High Cholesterol
- Stroke
Patient Reviews
Overall patient rating
4.7Based on 556 patient ratings
- I'd recommend this practice to family and friends
-
- I'd recommend this provider to family and friends
-
- Listened to me carefully
-
- Shared the right amount of information
-
- Earned my trust
-
All reviews have been submitted by patients after seeing the provider.For more information about the review system, check out this Learn more about our review system.
Patient Reviews
5
Always have a great experience on my visits.
November 8, 2025
5
Dr. Mercado is a great doctor, as well as being compassionate and taking good care of her patients.
November 7, 2025
5
Excellent service
November 8, 2025
5
Friendly, polite and helpful.
November 6, 2025
5
Very profesional
November 2, 2025
5
I will continue to visit this health provider.
November 1, 2025
5
I felt very comfortable with the doctor, the nurse, and the reception staff. They were very helpful with my insurance paperwork and scheduling new appointments. They were all very kind. I'm very grateful for their willingness to help.
November 1, 2025
5
Office is so organized, friendly, efficient.. Dr. Mercado expresses a special interest in your total well being. She is truly concerned and focused on helping you live a quality life!
October 29, 2025
5
Very kind and thoughtful of explaining everything.
October 22, 2025
5
Dr. Mercado is Awesome!!! She is very knowledgeable and friendly.
October 15, 2025
4
It's good.
October 11, 2025
5
They treated me very well, I am very happy. Thank you.
October 10, 2025
2
Very rude and kept talking about my weight in a negative way
October 10, 2025
2
too many unprofessional situations to type here, not going back.
October 9, 2025
5
Dr Mercado is a very qualified and thoughtfull medical professional. I fully trust her with my healthcare.
October 8, 2025
5
All very friendly and make you feel wecome!
October 8, 2025
5
Dr Mercado is kind, friendly and very knowledgeable
September 28, 2025
5
Dr. Mercado and staff are both professional and experienced while providing exceptional support.
September 27, 2025
5
It's okay
September 27, 2025
5
I am very pleased with the care provided by Dr Mercado and her staff
September 26, 2025
5
I am very, very happy with Dr. Ada Mercado. Dr. Ada Mercado. I really feel like she's taking care of me the best she can. And the staff there at the office is pretty awesome too.
September 27, 2025
5
I'm thankful I have this Dr and her staff. I feel like I'm getting excellent care.
September 20, 2025
5
Dr. Mercado is amazing! From day one, she has always listened, explained and cared about my concerns and issues. She is very reassuring and thorough. Also will see me at the drop of a hat if needed. And is always concerned about my overall well-being. That is a doctor!
September 14, 2025
5
A lot of professionalism and attention
September 13, 2025
5
I am very happy and grateful to Dr. Ada Mercado. She is an extremely good professional. I would always recommend her to my friends as long as I can, and she has excellent human qualities. My husband and I, who are her patients, are truly very pleased to have her as our doctor. Thank you.
September 14, 2025
5
The service was wonderful! Always grateful!
September 12, 2025
5
I enjoyed meeting Dr. Mercado. The fact that she speaks English and Spanish is a plus. I felt very comfortable and trust my care in her hands.
August 24, 2025
5
Brought my parents to Dr.Mercado also and same gr8 professional service.
August 24, 2025
5
I liked when I said due to my irregular heartbeat, Doctors want to know who my cardiologist is, she said tell them Dr. Ada Mercado. It made me feel special.
August 23, 2025
5
Dr. Mercado always listens and makes me feel that she cares.
August 24, 2025
5
Always have a great experience on my visits.
November 8, 2025
5
Dr. Mercado is a great doctor, as well as being compassionate and taking good care of her patients.
November 7, 2025
5
Excellent service
November 8, 2025
5
Friendly, polite and helpful.
November 6, 2025
5
Very profesional
November 2, 2025
5
I will continue to visit this health provider.
November 1, 2025
5
I felt very comfortable with the doctor, the nurse, and the reception staff. They were very helpful with my insurance paperwork and scheduling new appointments. They were all very kind. I'm very grateful for their willingness to help.
November 1, 2025
5
Office is so organized, friendly, efficient.. Dr. Mercado expresses a special interest in your total well being. She is truly concerned and focused on helping you live a quality life!
October 29, 2025
5
Very kind and thoughtful of explaining everything.
October 22, 2025
5
Dr. Mercado is Awesome!!! She is very knowledgeable and friendly.
October 15, 2025
5
They treated me very well, I am very happy. Thank you.
October 10, 2025
5
Dr Mercado is a very qualified and thoughtfull medical professional. I fully trust her with my healthcare.
October 8, 2025
5
All very friendly and make you feel wecome!
October 8, 2025
5
Dr Mercado is kind, friendly and very knowledgeable
September 28, 2025
5
Dr. Mercado and staff are both professional and experienced while providing exceptional support.
September 27, 2025
5
It's okay
September 27, 2025
5
I am very pleased with the care provided by Dr Mercado and her staff
September 26, 2025
5
I am very, very happy with Dr. Ada Mercado. Dr. Ada Mercado. I really feel like she's taking care of me the best she can. And the staff there at the office is pretty awesome too.
September 27, 2025
5
I'm thankful I have this Dr and her staff. I feel like I'm getting excellent care.
September 20, 2025
5
Dr. Mercado is amazing! From day one, she has always listened, explained and cared about my concerns and issues. She is very reassuring and thorough. Also will see me at the drop of a hat if needed. And is always concerned about my overall well-being. That is a doctor!
September 14, 2025
5
A lot of professionalism and attention
September 13, 2025
5
I am very happy and grateful to Dr. Ada Mercado. She is an extremely good professional. I would always recommend her to my friends as long as I can, and she has excellent human qualities. My husband and I, who are her patients, are truly very pleased to have her as our doctor. Thank you.
September 14, 2025
5
The service was wonderful! Always grateful!
September 12, 2025
5
I enjoyed meeting Dr. Mercado. The fact that she speaks English and Spanish is a plus. I felt very comfortable and trust my care in her hands.
August 24, 2025
5
Brought my parents to Dr.Mercado also and same gr8 professional service.
August 24, 2025
5
I liked when I said due to my irregular heartbeat, Doctors want to know who my cardiologist is, she said tell them Dr. Ada Mercado. It made me feel special.
August 23, 2025
5
Dr. Mercado always listens and makes me feel that she cares.
August 24, 2025
4
It's good.
October 11, 2025
2
Very rude and kept talking about my weight in a negative way
October 10, 2025
2
too many unprofessional situations to type here, not going back.
October 9, 2025
2
Very rude and kept talking about my weight in a negative way
October 10, 2025
2
too many unprofessional situations to type here, not going back.
October 9, 2025
4
It's good.
October 11, 2025
5
Always have a great experience on my visits.
November 8, 2025
5
Dr. Mercado is a great doctor, as well as being compassionate and taking good care of her patients.
November 7, 2025
5
Excellent service
November 8, 2025
5
Friendly, polite and helpful.
November 6, 2025
5
Very profesional
November 2, 2025
5
I will continue to visit this health provider.
November 1, 2025
5
I felt very comfortable with the doctor, the nurse, and the reception staff. They were very helpful with my insurance paperwork and scheduling new appointments. They were all very kind. I'm very grateful for their willingness to help.
November 1, 2025
5
Office is so organized, friendly, efficient.. Dr. Mercado expresses a special interest in your total well being. She is truly concerned and focused on helping you live a quality life!
October 29, 2025
5
Very kind and thoughtful of explaining everything.
October 22, 2025
5
Dr. Mercado is Awesome!!! She is very knowledgeable and friendly.
October 15, 2025
5
They treated me very well, I am very happy. Thank you.
October 10, 2025
5
Dr Mercado is a very qualified and thoughtfull medical professional. I fully trust her with my healthcare.
October 8, 2025
5
All very friendly and make you feel wecome!
October 8, 2025
5
Dr Mercado is kind, friendly and very knowledgeable
September 28, 2025
5
Dr. Mercado and staff are both professional and experienced while providing exceptional support.
September 27, 2025
5
It's okay
September 27, 2025
5
I am very pleased with the care provided by Dr Mercado and her staff
September 26, 2025
5
I am very, very happy with Dr. Ada Mercado. Dr. Ada Mercado. I really feel like she's taking care of me the best she can. And the staff there at the office is pretty awesome too.
September 27, 2025
5
I'm thankful I have this Dr and her staff. I feel like I'm getting excellent care.
September 20, 2025
5
Dr. Mercado is amazing! From day one, she has always listened, explained and cared about my concerns and issues. She is very reassuring and thorough. Also will see me at the drop of a hat if needed. And is always concerned about my overall well-being. That is a doctor!
September 14, 2025
5
A lot of professionalism and attention
September 13, 2025
5
I am very happy and grateful to Dr. Ada Mercado. She is an extremely good professional. I would always recommend her to my friends as long as I can, and she has excellent human qualities. My husband and I, who are her patients, are truly very pleased to have her as our doctor. Thank you.
September 14, 2025
5
The service was wonderful! Always grateful!
September 12, 2025
5
I enjoyed meeting Dr. Mercado. The fact that she speaks English and Spanish is a plus. I felt very comfortable and trust my care in her hands.
August 24, 2025
5
Brought my parents to Dr.Mercado also and same gr8 professional service.
August 24, 2025
5
I liked when I said due to my irregular heartbeat, Doctors want to know who my cardiologist is, she said tell them Dr. Ada Mercado. It made me feel special.
August 23, 2025
5
Dr. Mercado always listens and makes me feel that she cares.
August 24, 2025
5
Always have a great experience on my visits.
November 8, 2025
5
Excellent service
November 8, 2025
5
Dr. Mercado is a great doctor, as well as being compassionate and taking good care of her patients.
November 7, 2025
5
Friendly, polite and helpful.
November 6, 2025
5
Very profesional
November 2, 2025
5
I will continue to visit this health provider.
November 1, 2025
5
I felt very comfortable with the doctor, the nurse, and the reception staff. They were very helpful with my insurance paperwork and scheduling new appointments. They were all very kind. I'm very grateful for their willingness to help.
November 1, 2025
5
Office is so organized, friendly, efficient.. Dr. Mercado expresses a special interest in your total well being. She is truly concerned and focused on helping you live a quality life!
October 29, 2025
5
Very kind and thoughtful of explaining everything.
October 22, 2025
5
Dr. Mercado is Awesome!!! She is very knowledgeable and friendly.
October 15, 2025
4
It's good.
October 11, 2025
5
They treated me very well, I am very happy. Thank you.
October 10, 2025
2
Very rude and kept talking about my weight in a negative way
October 10, 2025
2
too many unprofessional situations to type here, not going back.
October 9, 2025
5
Dr Mercado is a very qualified and thoughtfull medical professional. I fully trust her with my healthcare.
October 8, 2025
5
All very friendly and make you feel wecome!
October 8, 2025
5
Dr Mercado is kind, friendly and very knowledgeable
September 28, 2025
5
Dr. Mercado and staff are both professional and experienced while providing exceptional support.
September 27, 2025
5
It's okay
September 27, 2025
5
I am very, very happy with Dr. Ada Mercado. Dr. Ada Mercado. I really feel like she's taking care of me the best she can. And the staff there at the office is pretty awesome too.
September 27, 2025
5
I am very pleased with the care provided by Dr Mercado and her staff
September 26, 2025
5
I'm thankful I have this Dr and her staff. I feel like I'm getting excellent care.
September 20, 2025
5
Dr. Mercado is amazing! From day one, she has always listened, explained and cared about my concerns and issues. She is very reassuring and thorough. Also will see me at the drop of a hat if needed. And is always concerned about my overall well-being. That is a doctor!
September 14, 2025
5
I am very happy and grateful to Dr. Ada Mercado. She is an extremely good professional. I would always recommend her to my friends as long as I can, and she has excellent human qualities. My husband and I, who are her patients, are truly very pleased to have her as our doctor. Thank you.
September 14, 2025
5
A lot of professionalism and attention
September 13, 2025
5
The service was wonderful! Always grateful!
September 12, 2025
5
Brought my parents to Dr.Mercado also and same gr8 professional service.
August 24, 2025
5
Dr. Mercado always listens and makes me feel that she cares.
August 24, 2025
5
I enjoyed meeting Dr. Mercado. The fact that she speaks English and Spanish is a plus. I felt very comfortable and trust my care in her hands.
August 24, 2025
5
I liked when I said due to my irregular heartbeat, Doctors want to know who my cardiologist is, she said tell them Dr. Ada Mercado. It made me feel special.
August 23, 2025
5
I liked when I said due to my irregular heartbeat, Doctors want to know who my cardiologist is, she said tell them Dr. Ada Mercado. It made me feel special.
August 23, 2025
5
I enjoyed meeting Dr. Mercado. The fact that she speaks English and Spanish is a plus. I felt very comfortable and trust my care in her hands.
August 24, 2025
5
Dr. Mercado always listens and makes me feel that she cares.
August 24, 2025
5
Brought my parents to Dr.Mercado also and same gr8 professional service.
August 24, 2025
5
The service was wonderful! Always grateful!
September 12, 2025
5
A lot of professionalism and attention
September 13, 2025
5
I am very happy and grateful to Dr. Ada Mercado. She is an extremely good professional. I would always recommend her to my friends as long as I can, and she has excellent human qualities. My husband and I, who are her patients, are truly very pleased to have her as our doctor. Thank you.
September 14, 2025
5
Dr. Mercado is amazing! From day one, she has always listened, explained and cared about my concerns and issues. She is very reassuring and thorough. Also will see me at the drop of a hat if needed. And is always concerned about my overall well-being. That is a doctor!
September 14, 2025
5
I'm thankful I have this Dr and her staff. I feel like I'm getting excellent care.
September 20, 2025
5
I am very pleased with the care provided by Dr Mercado and her staff
September 26, 2025
5
I am very, very happy with Dr. Ada Mercado. Dr. Ada Mercado. I really feel like she's taking care of me the best she can. And the staff there at the office is pretty awesome too.
September 27, 2025
5
It's okay
September 27, 2025
5
Dr. Mercado and staff are both professional and experienced while providing exceptional support.
September 27, 2025
5
Dr Mercado is kind, friendly and very knowledgeable
September 28, 2025
5
All very friendly and make you feel wecome!
October 8, 2025
5
Dr Mercado is a very qualified and thoughtfull medical professional. I fully trust her with my healthcare.
October 8, 2025
2
too many unprofessional situations to type here, not going back.
October 9, 2025
2
Very rude and kept talking about my weight in a negative way
October 10, 2025
5
They treated me very well, I am very happy. Thank you.
October 10, 2025
4
It's good.
October 11, 2025
5
Dr. Mercado is Awesome!!! She is very knowledgeable and friendly.
October 15, 2025
5
Very kind and thoughtful of explaining everything.
October 22, 2025
5
Office is so organized, friendly, efficient.. Dr. Mercado expresses a special interest in your total well being. She is truly concerned and focused on helping you live a quality life!
October 29, 2025
5
I felt very comfortable with the doctor, the nurse, and the reception staff. They were very helpful with my insurance paperwork and scheduling new appointments. They were all very kind. I'm very grateful for their willingness to help.
November 1, 2025
5
I will continue to visit this health provider.
November 1, 2025
5
Very profesional
November 2, 2025
5
Friendly, polite and helpful.
November 6, 2025
5
Dr. Mercado is a great doctor, as well as being compassionate and taking good care of her patients.
November 7, 2025
5
Excellent service
November 8, 2025
5
Always have a great experience on my visits.
November 8, 2025
Ada Mercado, MD
Cardiovascular Disease Specialist with Wellstar since 2010
Rating
4.7
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Specialties
Cardiovascular Disease
, Cardiology
Education
Doctor of Medicine
Medical School
Universidad Nacional Pedro Henriquez Urena
Residency
Ramon Betances HospitalMayaguez Medical Center
Fellowship
Emory Healthcare/Emory University Hospital LSU Health Sciences Center Ponce School of Medicine
Certifications
National Board of Physicians and Surgeons
Spoken Languages
English and Spanish
Hospital Affiliations
Wellstar Kennestone Hospital Wellstar North Fulton Hospital Wellstar Douglas Hospital Wellstar Cobb Hospital
Office Locations
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www.wellstar.org/physicians/ada-mercado-md
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