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
4.6Based on 560 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
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 hope appointment keep on time because my appointment was at 3:30 pm I got 3:15 as indicated and doctor came to room 4:25 pm and looks that I was last patient and all staff were talking and laughing and I am still in the room waiting for the doctor .
May 25, 2025
5
I arrived at the exact time, at 1:00 p.m. and they attended me at 1:30 p.m.
May 23, 2025
5
Excellent service from the entire team, from the front desk to the nurses and of course, the doctor. Very grateful.
May 22, 2025
4
Multiple messages said to be at the office at 9:45. I was there at 915. My appointment was at 10. I completed sign in on my chart well before my arrival. I was not not called back to my appointment until 1030 and my appointment was was not complete until 11. There was only v/s taken no EKG and only 5 minutes with the doctor. I respect the office's time, but do not feel they respect my time.
May 21, 2025
5
All good.
May 18, 2025
5
I recommend Dr Mercado to friends and family with heart questions or concerns
May 16, 2025
5
Dr Mercado and all her team members were very professional, kind and helpful. Best group of people!
May 8, 2025
5
Scheduling and reception staff were very professional.
May 2, 2025
5
Everyone was kind and professional. The woman at the front desk was especially pleasant and I thanked her for it. Dr. Mercado was wonderful.
April 30, 2025
5
I feel very comfortable with the whole staff
April 30, 2025
5
Good experience
April 30, 2025
5
I have been a patient with Dr.Mercado for nearly 13 years
April 30, 2025
5
Very good
April 27, 2025
5
The love and kindness was very much appreciated. Thank you so much. A great staff. Thank you and a wonderful doctor. Bye-bye.
April 30, 2025
5
No comments, everything is excellent.
April 27, 2025
5
Good kindness and excellent professionalism
April 27, 2025
5
I really didn't see them wash or disinfect their hands.
April 24, 2025
5
I would like to say that Dr. Mercado has excellent bedside manner and she's very relatable and a joy to be with because she's also funny and she helps you to calm down and relax and not be so worried. But she's definitely straight to the point and just a great doctor and I really appreciate her. So, thank you, doctor.
April 27, 2025
4
Dr Mercado was difficult to understand at times. At times she also had difficulty saying what she wanted to say. Needs a little better understanding of English.
April 27, 2025
5
Dr. Mercado is absolutely one of the most personable, knowledgeable doctors I've ever had.
April 27, 2025
5
I was anxious before the appointment, but when I was seen by the doctor, who gave me all the necessary information, I was happy.
April 24, 2025
5
everyone was very attentive, would continue to see my Dr.
April 23, 2025
5
I congratulate them because, in general, their staff is very attentive and very professional. From the moment I walked into Green Romo, they showed kindness and made me feel comfortable explaining my condition. Dr. Mercado demonstrated her competence and professionalism by guiding me based on my condition and current situation.
April 18, 2025
5
Dr. Mercado is very considerate and a very good doctor, thank you.
April 19, 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 hope appointment keep on time because my appointment was at 3:30 pm I got 3:15 as indicated and doctor came to room 4:25 pm and looks that I was last patient and all staff were talking and laughing and I am still in the room waiting for the doctor .
May 25, 2025
5
I arrived at the exact time, at 1:00 p.m. and they attended me at 1:30 p.m.
May 23, 2025
5
Excellent service from the entire team, from the front desk to the nurses and of course, the doctor. Very grateful.
May 22, 2025
5
All good.
May 18, 2025
5
I recommend Dr Mercado to friends and family with heart questions or concerns
May 16, 2025
5
Dr Mercado and all her team members were very professional, kind and helpful. Best group of people!
May 8, 2025
5
Scheduling and reception staff were very professional.
May 2, 2025
5
Everyone was kind and professional. The woman at the front desk was especially pleasant and I thanked her for it. Dr. Mercado was wonderful.
April 30, 2025
5
I feel very comfortable with the whole staff
April 30, 2025
5
Good experience
April 30, 2025
5
I have been a patient with Dr.Mercado for nearly 13 years
April 30, 2025
5
Very good
April 27, 2025
5
The love and kindness was very much appreciated. Thank you so much. A great staff. Thank you and a wonderful doctor. Bye-bye.
April 30, 2025
5
No comments, everything is excellent.
April 27, 2025
5
Good kindness and excellent professionalism
April 27, 2025
5
I really didn't see them wash or disinfect their hands.
April 24, 2025
5
I would like to say that Dr. Mercado has excellent bedside manner and she's very relatable and a joy to be with because she's also funny and she helps you to calm down and relax and not be so worried. But she's definitely straight to the point and just a great doctor and I really appreciate her. So, thank you, doctor.
April 27, 2025
5
Dr. Mercado is absolutely one of the most personable, knowledgeable doctors I've ever had.
April 27, 2025
5
I was anxious before the appointment, but when I was seen by the doctor, who gave me all the necessary information, I was happy.
April 24, 2025
5
everyone was very attentive, would continue to see my Dr.
April 23, 2025
5
I congratulate them because, in general, their staff is very attentive and very professional. From the moment I walked into Green Romo, they showed kindness and made me feel comfortable explaining my condition. Dr. Mercado demonstrated her competence and professionalism by guiding me based on my condition and current situation.
April 18, 2025
5
Dr. Mercado is very considerate and a very good doctor, thank you.
April 19, 2025
4
Multiple messages said to be at the office at 9:45. I was there at 915. My appointment was at 10. I completed sign in on my chart well before my arrival. I was not not called back to my appointment until 1030 and my appointment was was not complete until 11. There was only v/s taken no EKG and only 5 minutes with the doctor. I respect the office's time, but do not feel they respect my time.
May 21, 2025
4
Dr Mercado was difficult to understand at times. At times she also had difficulty saying what she wanted to say. Needs a little better understanding of English.
April 27, 2025
4
Multiple messages said to be at the office at 9:45. I was there at 915. My appointment was at 10. I completed sign in on my chart well before my arrival. I was not not called back to my appointment until 1030 and my appointment was was not complete until 11. There was only v/s taken no EKG and only 5 minutes with the doctor. I respect the office's time, but do not feel they respect my time.
May 21, 2025
4
Dr Mercado was difficult to understand at times. At times she also had difficulty saying what she wanted to say. Needs a little better understanding of English.
April 27, 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 hope appointment keep on time because my appointment was at 3:30 pm I got 3:15 as indicated and doctor came to room 4:25 pm and looks that I was last patient and all staff were talking and laughing and I am still in the room waiting for the doctor .
May 25, 2025
5
I arrived at the exact time, at 1:00 p.m. and they attended me at 1:30 p.m.
May 23, 2025
5
Excellent service from the entire team, from the front desk to the nurses and of course, the doctor. Very grateful.
May 22, 2025
5
All good.
May 18, 2025
5
I recommend Dr Mercado to friends and family with heart questions or concerns
May 16, 2025
5
Dr Mercado and all her team members were very professional, kind and helpful. Best group of people!
May 8, 2025
5
Scheduling and reception staff were very professional.
May 2, 2025
5
Everyone was kind and professional. The woman at the front desk was especially pleasant and I thanked her for it. Dr. Mercado was wonderful.
April 30, 2025
5
I feel very comfortable with the whole staff
April 30, 2025
5
Good experience
April 30, 2025
5
I have been a patient with Dr.Mercado for nearly 13 years
April 30, 2025
5
Very good
April 27, 2025
5
The love and kindness was very much appreciated. Thank you so much. A great staff. Thank you and a wonderful doctor. Bye-bye.
April 30, 2025
5
No comments, everything is excellent.
April 27, 2025
5
Good kindness and excellent professionalism
April 27, 2025
5
I really didn't see them wash or disinfect their hands.
April 24, 2025
5
I would like to say that Dr. Mercado has excellent bedside manner and she's very relatable and a joy to be with because she's also funny and she helps you to calm down and relax and not be so worried. But she's definitely straight to the point and just a great doctor and I really appreciate her. So, thank you, doctor.
April 27, 2025
5
Dr. Mercado is absolutely one of the most personable, knowledgeable doctors I've ever had.
April 27, 2025
5
I was anxious before the appointment, but when I was seen by the doctor, who gave me all the necessary information, I was happy.
April 24, 2025
5
everyone was very attentive, would continue to see my Dr.
April 23, 2025
5
I congratulate them because, in general, their staff is very attentive and very professional. From the moment I walked into Green Romo, they showed kindness and made me feel comfortable explaining my condition. Dr. Mercado demonstrated her competence and professionalism by guiding me based on my condition and current situation.
April 18, 2025
5
Dr. Mercado is very considerate and a very good doctor, thank you.
April 19, 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 hope appointment keep on time because my appointment was at 3:30 pm I got 3:15 as indicated and doctor came to room 4:25 pm and looks that I was last patient and all staff were talking and laughing and I am still in the room waiting for the doctor .
May 25, 2025
5
I arrived at the exact time, at 1:00 p.m. and they attended me at 1:30 p.m.
May 23, 2025
5
Excellent service from the entire team, from the front desk to the nurses and of course, the doctor. Very grateful.
May 22, 2025
4
Multiple messages said to be at the office at 9:45. I was there at 915. My appointment was at 10. I completed sign in on my chart well before my arrival. I was not not called back to my appointment until 1030 and my appointment was was not complete until 11. There was only v/s taken no EKG and only 5 minutes with the doctor. I respect the office's time, but do not feel they respect my time.
May 21, 2025
5
All good.
May 18, 2025
5
I recommend Dr Mercado to friends and family with heart questions or concerns
May 16, 2025
5
Dr Mercado and all her team members were very professional, kind and helpful. Best group of people!
May 8, 2025
5
Scheduling and reception staff were very professional.
May 2, 2025
5
The love and kindness was very much appreciated. Thank you so much. A great staff. Thank you and a wonderful doctor. Bye-bye.
April 30, 2025
5
Everyone was kind and professional. The woman at the front desk was especially pleasant and I thanked her for it. Dr. Mercado was wonderful.
April 30, 2025
5
I have been a patient with Dr.Mercado for nearly 13 years
April 30, 2025
5
I feel very comfortable with the whole staff
April 30, 2025
5
Good experience
April 30, 2025
5
No comments, everything is excellent.
April 27, 2025
5
Very good
April 27, 2025
5
Good kindness and excellent professionalism
April 27, 2025
5
I would like to say that Dr. Mercado has excellent bedside manner and she's very relatable and a joy to be with because she's also funny and she helps you to calm down and relax and not be so worried. But she's definitely straight to the point and just a great doctor and I really appreciate her. So, thank you, doctor.
April 27, 2025
4
Dr Mercado was difficult to understand at times. At times she also had difficulty saying what she wanted to say. Needs a little better understanding of English.
April 27, 2025
5
Dr. Mercado is absolutely one of the most personable, knowledgeable doctors I've ever had.
April 27, 2025
5
I was anxious before the appointment, but when I was seen by the doctor, who gave me all the necessary information, I was happy.
April 24, 2025
5
I really didn't see them wash or disinfect their hands.
April 24, 2025
5
everyone was very attentive, would continue to see my Dr.
April 23, 2025
5
Dr. Mercado is very considerate and a very good doctor, thank you.
April 19, 2025
5
I congratulate them because, in general, their staff is very attentive and very professional. From the moment I walked into Green Romo, they showed kindness and made me feel comfortable explaining my condition. Dr. Mercado demonstrated her competence and professionalism by guiding me based on my condition and current situation.
April 18, 2025
5
I congratulate them because, in general, their staff is very attentive and very professional. From the moment I walked into Green Romo, they showed kindness and made me feel comfortable explaining my condition. Dr. Mercado demonstrated her competence and professionalism by guiding me based on my condition and current situation.
April 18, 2025
5
Dr. Mercado is very considerate and a very good doctor, thank you.
April 19, 2025
5
everyone was very attentive, would continue to see my Dr.
April 23, 2025
5
I really didn't see them wash or disinfect their hands.
April 24, 2025
5
I was anxious before the appointment, but when I was seen by the doctor, who gave me all the necessary information, I was happy.
April 24, 2025
5
Dr. Mercado is absolutely one of the most personable, knowledgeable doctors I've ever had.
April 27, 2025
4
Dr Mercado was difficult to understand at times. At times she also had difficulty saying what she wanted to say. Needs a little better understanding of English.
April 27, 2025
5
I would like to say that Dr. Mercado has excellent bedside manner and she's very relatable and a joy to be with because she's also funny and she helps you to calm down and relax and not be so worried. But she's definitely straight to the point and just a great doctor and I really appreciate her. So, thank you, doctor.
April 27, 2025
5
Good kindness and excellent professionalism
April 27, 2025
5
Very good
April 27, 2025
5
No comments, everything is excellent.
April 27, 2025
5
Good experience
April 30, 2025
5
I feel very comfortable with the whole staff
April 30, 2025
5
I have been a patient with Dr.Mercado for nearly 13 years
April 30, 2025
5
Everyone was kind and professional. The woman at the front desk was especially pleasant and I thanked her for it. Dr. Mercado was wonderful.
April 30, 2025
5
The love and kindness was very much appreciated. Thank you so much. A great staff. Thank you and a wonderful doctor. Bye-bye.
April 30, 2025
5
Scheduling and reception staff were very professional.
May 2, 2025
5
Dr Mercado and all her team members were very professional, kind and helpful. Best group of people!
May 8, 2025
5
I recommend Dr Mercado to friends and family with heart questions or concerns
May 16, 2025
5
All good.
May 18, 2025
4
Multiple messages said to be at the office at 9:45. I was there at 915. My appointment was at 10. I completed sign in on my chart well before my arrival. I was not not called back to my appointment until 1030 and my appointment was was not complete until 11. There was only v/s taken no EKG and only 5 minutes with the doctor. I respect the office's time, but do not feel they respect my time.
May 21, 2025
5
Excellent service from the entire team, from the front desk to the nurses and of course, the doctor. Very grateful.
May 22, 2025
5
I arrived at the exact time, at 1:00 p.m. and they attended me at 1:30 p.m.
May 23, 2025
5
I hope appointment keep on time because my appointment was at 3:30 pm I got 3:15 as indicated and doctor came to room 4:25 pm and looks that I was last patient and all staff were talking and laughing and I am still in the room waiting for the doctor .
May 25, 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
Ada Mercado, MD
Cardiovascular Disease Specialist with Wellstar since 2010
Rating
4.6
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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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