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
Patient Reviews
Overall patient rating
4.7Based on 562 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
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
Everyone was very friendly and helpful!
August 20, 2025
5
Dr Mercado is a great cardiologist, listens to me, and provides great non-medical suggestions as well as medical interventions.
August 20, 2025
5
Dr. Mercado is very experienced, listens carefully and provides a thoroughly detailed and informative analysis and explanation. I have complete faith in her expertise and ability. The staff was also friendly and helpful.
August 15, 2025
4
The nurse listed my height as 67 inches. That's five foot seven. I'm a six foot. You know, that really throws your BMI calculations off quite drastically. I did not like that at all. The estimate of height was very, very poorly done. Thank you.
August 15, 2025
5
They are very attentive and professional with the willingness to assist you with whatever you need from the healthcare center.
August 13, 2025
5
DR. MERCADO AND HER ENTIRE STAFF ARE CORTEOUS, KNOWLEDGEABLE AND VERY FRIENDLY. THEY ALWAYS MAKE YOU FEEL WELCOMED. I HIGHLY RECOMMEND!! A+++
August 13, 2025
5
Dr. Mercado was very attentive, listened to all my concerns and fully explained the steps to follow for my care. She was very supportive, understanding and personable. She gave you assurance that all your issues would be fully addressed and taken care of. I would definitely recommend her. This was my first visit with her and I was very impressed.
August 6, 2025
5
Great, friendly and specific attention.
August 3, 2025
5
good
August 4, 2025
4
Fine
August 1, 2025
5
A great experience efficient in all areas of your visit
July 31, 2025
5
Dr. Mercado is intelligent, kind, thorough, and explains very well everything. And I'm done.
July 16, 2025
5
It was a wonderful experience.
July 12, 2025
5
Dr. Mercado is a caring doctor, as well as being very thorough and knowledgeable. Her nurse and the rest of the staff are wonderful , too.
July 11, 2025
4
Trust isn't built in 20 minutes. The framing of these questions isn't optimal for a new patient visit. The nurse and physician were friendly and respectful.
July 11, 2025
5
I was delighted they called me into the examining room 20 minutes before my scheduled appointment. Thank you.
July 9, 2025
5
Always good
July 4, 2025
5
Always a great friendly staff and Dr.is perfect for me. I am comfortable there.
July 4, 2025
5
Congratulations on having a very well-trained staff.
June 27, 2025
5
Excellent service from all staff.
June 26, 2025
5
Im so thankfull for all your care and support all this time, you guys make me fiel in good hands, God Bless you !
June 22, 2025
5
Dr Mercado and her staff are professional, knowledgeable, polite, caring and phenomenal care givers. I strongly recommend them based on my personal experiences with the practice and Dr Mercado.
June 20, 2025
5
All coronary personnel were absolutely excelllent. Very knowledgeable and caring!
June 19, 2025
5
It was a very thorough examination and great information was shared. The young woman who performed the first steps in the examination was very friendly and helpful. I wish I got her name but I do know she has a birthday coming up a week after mine.
June 14, 2025
5
Extremely impressed how I was taken care. I felt really special. Impressed how everything runs so efficiently.
June 12, 2025
5
We love Dr. Mercado!!! She is exceptional. We have been going to her for years and would not change!!!
June 11, 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
Everyone was very friendly and helpful!
August 20, 2025
5
Dr Mercado is a great cardiologist, listens to me, and provides great non-medical suggestions as well as medical interventions.
August 20, 2025
5
Dr. Mercado is very experienced, listens carefully and provides a thoroughly detailed and informative analysis and explanation. I have complete faith in her expertise and ability. The staff was also friendly and helpful.
August 15, 2025
5
They are very attentive and professional with the willingness to assist you with whatever you need from the healthcare center.
August 13, 2025
5
DR. MERCADO AND HER ENTIRE STAFF ARE CORTEOUS, KNOWLEDGEABLE AND VERY FRIENDLY. THEY ALWAYS MAKE YOU FEEL WELCOMED. I HIGHLY RECOMMEND!! A+++
August 13, 2025
5
Dr. Mercado was very attentive, listened to all my concerns and fully explained the steps to follow for my care. She was very supportive, understanding and personable. She gave you assurance that all your issues would be fully addressed and taken care of. I would definitely recommend her. This was my first visit with her and I was very impressed.
August 6, 2025
5
Great, friendly and specific attention.
August 3, 2025
5
good
August 4, 2025
5
A great experience efficient in all areas of your visit
July 31, 2025
5
Dr. Mercado is intelligent, kind, thorough, and explains very well everything. And I'm done.
July 16, 2025
5
It was a wonderful experience.
July 12, 2025
5
Dr. Mercado is a caring doctor, as well as being very thorough and knowledgeable. Her nurse and the rest of the staff are wonderful , too.
July 11, 2025
5
I was delighted they called me into the examining room 20 minutes before my scheduled appointment. Thank you.
July 9, 2025
5
Always good
July 4, 2025
5
Always a great friendly staff and Dr.is perfect for me. I am comfortable there.
July 4, 2025
5
Congratulations on having a very well-trained staff.
June 27, 2025
5
Excellent service from all staff.
June 26, 2025
5
Im so thankfull for all your care and support all this time, you guys make me fiel in good hands, God Bless you !
June 22, 2025
5
Dr Mercado and her staff are professional, knowledgeable, polite, caring and phenomenal care givers. I strongly recommend them based on my personal experiences with the practice and Dr Mercado.
June 20, 2025
5
All coronary personnel were absolutely excelllent. Very knowledgeable and caring!
June 19, 2025
5
It was a very thorough examination and great information was shared. The young woman who performed the first steps in the examination was very friendly and helpful. I wish I got her name but I do know she has a birthday coming up a week after mine.
June 14, 2025
5
Extremely impressed how I was taken care. I felt really special. Impressed how everything runs so efficiently.
June 12, 2025
5
We love Dr. Mercado!!! She is exceptional. We have been going to her for years and would not change!!!
June 11, 2025
4
The nurse listed my height as 67 inches. That's five foot seven. I'm a six foot. You know, that really throws your BMI calculations off quite drastically. I did not like that at all. The estimate of height was very, very poorly done. Thank you.
August 15, 2025
4
Fine
August 1, 2025
4
Trust isn't built in 20 minutes. The framing of these questions isn't optimal for a new patient visit. The nurse and physician were friendly and respectful.
July 11, 2025
4
The nurse listed my height as 67 inches. That's five foot seven. I'm a six foot. You know, that really throws your BMI calculations off quite drastically. I did not like that at all. The estimate of height was very, very poorly done. Thank you.
August 15, 2025
4
Fine
August 1, 2025
4
Trust isn't built in 20 minutes. The framing of these questions isn't optimal for a new patient visit. The nurse and physician were friendly and respectful.
July 11, 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
Everyone was very friendly and helpful!
August 20, 2025
5
Dr Mercado is a great cardiologist, listens to me, and provides great non-medical suggestions as well as medical interventions.
August 20, 2025
5
Dr. Mercado is very experienced, listens carefully and provides a thoroughly detailed and informative analysis and explanation. I have complete faith in her expertise and ability. The staff was also friendly and helpful.
August 15, 2025
5
They are very attentive and professional with the willingness to assist you with whatever you need from the healthcare center.
August 13, 2025
5
DR. MERCADO AND HER ENTIRE STAFF ARE CORTEOUS, KNOWLEDGEABLE AND VERY FRIENDLY. THEY ALWAYS MAKE YOU FEEL WELCOMED. I HIGHLY RECOMMEND!! A+++
August 13, 2025
5
Dr. Mercado was very attentive, listened to all my concerns and fully explained the steps to follow for my care. She was very supportive, understanding and personable. She gave you assurance that all your issues would be fully addressed and taken care of. I would definitely recommend her. This was my first visit with her and I was very impressed.
August 6, 2025
5
Great, friendly and specific attention.
August 3, 2025
5
good
August 4, 2025
5
A great experience efficient in all areas of your visit
July 31, 2025
5
Dr. Mercado is intelligent, kind, thorough, and explains very well everything. And I'm done.
July 16, 2025
5
It was a wonderful experience.
July 12, 2025
5
Dr. Mercado is a caring doctor, as well as being very thorough and knowledgeable. Her nurse and the rest of the staff are wonderful , too.
July 11, 2025
5
I was delighted they called me into the examining room 20 minutes before my scheduled appointment. Thank you.
July 9, 2025
5
Always good
July 4, 2025
5
Always a great friendly staff and Dr.is perfect for me. I am comfortable there.
July 4, 2025
5
Congratulations on having a very well-trained staff.
June 27, 2025
5
Excellent service from all staff.
June 26, 2025
5
Im so thankfull for all your care and support all this time, you guys make me fiel in good hands, God Bless you !
June 22, 2025
5
Dr Mercado and her staff are professional, knowledgeable, polite, caring and phenomenal care givers. I strongly recommend them based on my personal experiences with the practice and Dr Mercado.
June 20, 2025
5
All coronary personnel were absolutely excelllent. Very knowledgeable and caring!
June 19, 2025
5
It was a very thorough examination and great information was shared. The young woman who performed the first steps in the examination was very friendly and helpful. I wish I got her name but I do know she has a birthday coming up a week after mine.
June 14, 2025
5
Extremely impressed how I was taken care. I felt really special. Impressed how everything runs so efficiently.
June 12, 2025
5
We love Dr. Mercado!!! She is exceptional. We have been going to her for years and would not change!!!
June 11, 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
Everyone was very friendly and helpful!
August 20, 2025
5
Dr Mercado is a great cardiologist, listens to me, and provides great non-medical suggestions as well as medical interventions.
August 20, 2025
5
Dr. Mercado is very experienced, listens carefully and provides a thoroughly detailed and informative analysis and explanation. I have complete faith in her expertise and ability. The staff was also friendly and helpful.
August 15, 2025
4
The nurse listed my height as 67 inches. That's five foot seven. I'm a six foot. You know, that really throws your BMI calculations off quite drastically. I did not like that at all. The estimate of height was very, very poorly done. Thank you.
August 15, 2025
5
They are very attentive and professional with the willingness to assist you with whatever you need from the healthcare center.
August 13, 2025
5
DR. MERCADO AND HER ENTIRE STAFF ARE CORTEOUS, KNOWLEDGEABLE AND VERY FRIENDLY. THEY ALWAYS MAKE YOU FEEL WELCOMED. I HIGHLY RECOMMEND!! A+++
August 13, 2025
5
Dr. Mercado was very attentive, listened to all my concerns and fully explained the steps to follow for my care. She was very supportive, understanding and personable. She gave you assurance that all your issues would be fully addressed and taken care of. I would definitely recommend her. This was my first visit with her and I was very impressed.
August 6, 2025
5
good
August 4, 2025
5
Great, friendly and specific attention.
August 3, 2025
4
Fine
August 1, 2025
5
A great experience efficient in all areas of your visit
July 31, 2025
5
Dr. Mercado is intelligent, kind, thorough, and explains very well everything. And I'm done.
July 16, 2025
5
It was a wonderful experience.
July 12, 2025
5
Dr. Mercado is a caring doctor, as well as being very thorough and knowledgeable. Her nurse and the rest of the staff are wonderful , too.
July 11, 2025
4
Trust isn't built in 20 minutes. The framing of these questions isn't optimal for a new patient visit. The nurse and physician were friendly and respectful.
July 11, 2025
5
I was delighted they called me into the examining room 20 minutes before my scheduled appointment. Thank you.
July 9, 2025
5
Always good
July 4, 2025
5
Always a great friendly staff and Dr.is perfect for me. I am comfortable there.
July 4, 2025
5
Congratulations on having a very well-trained staff.
June 27, 2025
5
Excellent service from all staff.
June 26, 2025
5
Im so thankfull for all your care and support all this time, you guys make me fiel in good hands, God Bless you !
June 22, 2025
5
Dr Mercado and her staff are professional, knowledgeable, polite, caring and phenomenal care givers. I strongly recommend them based on my personal experiences with the practice and Dr Mercado.
June 20, 2025
5
All coronary personnel were absolutely excelllent. Very knowledgeable and caring!
June 19, 2025
5
It was a very thorough examination and great information was shared. The young woman who performed the first steps in the examination was very friendly and helpful. I wish I got her name but I do know she has a birthday coming up a week after mine.
June 14, 2025
5
Extremely impressed how I was taken care. I felt really special. Impressed how everything runs so efficiently.
June 12, 2025
5
We love Dr. Mercado!!! She is exceptional. We have been going to her for years and would not change!!!
June 11, 2025
5
We love Dr. Mercado!!! She is exceptional. We have been going to her for years and would not change!!!
June 11, 2025
5
Extremely impressed how I was taken care. I felt really special. Impressed how everything runs so efficiently.
June 12, 2025
5
It was a very thorough examination and great information was shared. The young woman who performed the first steps in the examination was very friendly and helpful. I wish I got her name but I do know she has a birthday coming up a week after mine.
June 14, 2025
5
All coronary personnel were absolutely excelllent. Very knowledgeable and caring!
June 19, 2025
5
Dr Mercado and her staff are professional, knowledgeable, polite, caring and phenomenal care givers. I strongly recommend them based on my personal experiences with the practice and Dr Mercado.
June 20, 2025
5
Im so thankfull for all your care and support all this time, you guys make me fiel in good hands, God Bless you !
June 22, 2025
5
Excellent service from all staff.
June 26, 2025
5
Congratulations on having a very well-trained staff.
June 27, 2025
5
Always a great friendly staff and Dr.is perfect for me. I am comfortable there.
July 4, 2025
5
Always good
July 4, 2025
5
I was delighted they called me into the examining room 20 minutes before my scheduled appointment. Thank you.
July 9, 2025
4
Trust isn't built in 20 minutes. The framing of these questions isn't optimal for a new patient visit. The nurse and physician were friendly and respectful.
July 11, 2025
5
Dr. Mercado is a caring doctor, as well as being very thorough and knowledgeable. Her nurse and the rest of the staff are wonderful , too.
July 11, 2025
5
It was a wonderful experience.
July 12, 2025
5
Dr. Mercado is intelligent, kind, thorough, and explains very well everything. And I'm done.
July 16, 2025
5
A great experience efficient in all areas of your visit
July 31, 2025
4
Fine
August 1, 2025
5
Great, friendly and specific attention.
August 3, 2025
5
good
August 4, 2025
5
Dr. Mercado was very attentive, listened to all my concerns and fully explained the steps to follow for my care. She was very supportive, understanding and personable. She gave you assurance that all your issues would be fully addressed and taken care of. I would definitely recommend her. This was my first visit with her and I was very impressed.
August 6, 2025
5
DR. MERCADO AND HER ENTIRE STAFF ARE CORTEOUS, KNOWLEDGEABLE AND VERY FRIENDLY. THEY ALWAYS MAKE YOU FEEL WELCOMED. I HIGHLY RECOMMEND!! A+++
August 13, 2025
5
They are very attentive and professional with the willingness to assist you with whatever you need from the healthcare center.
August 13, 2025
4
The nurse listed my height as 67 inches. That's five foot seven. I'm a six foot. You know, that really throws your BMI calculations off quite drastically. I did not like that at all. The estimate of height was very, very poorly done. Thank you.
August 15, 2025
5
Dr. Mercado is very experienced, listens carefully and provides a thoroughly detailed and informative analysis and explanation. I have complete faith in her expertise and ability. The staff was also friendly and helpful.
August 15, 2025
5
Dr Mercado is a great cardiologist, listens to me, and provides great non-medical suggestions as well as medical interventions.
August 20, 2025
5
Everyone was very friendly and helpful!
August 20, 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
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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