Calin Maniu, MD
Interventional Cardiology
Johns Hopkins Endoscopy & Surgery Center - Columbia
5450 Knoll North Drive
Columbia, MD 21045 Directions
4.8 out of 5
162 verified ratings
162 Ratings, 46 Comments
The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy.
Jun 15, 2026
Excellent care.
Jun 15, 2026
Excellent and caring professional
Jun 2, 2026
Excellent.
Jun 1, 2026
I received excellent care
May 19, 2026
Dr maniu make me more comfortable and satisfied
May 18, 2026
Everyone provide good, helpful information regarding my health and well-being.
May 18, 2026
Very professional and provided educational advice
May 12, 2026
I had seen Dr. Maniu a couple of years ago and was very happy that I could see him again for my current problems. He's an outstanding doctor.
May 12, 2026
Doctor provided specialist care that resolved concerns from GP and provided change in treatment to address my needs.
May 11, 2026
Very good bedside manner.
May 11, 2026
If it wasn't for Dr Maniu, I think my heart condition would have worsen. I appreciate that he took the time to read through medical files and expressed his concerns to my primary provider.
Apr 28, 2026
This was an excellent experience.
Apr 27, 2026
Wonderful. I'm grateful for the good care.
Apr 13, 2026
Very thorough. Great explanations. Listened and answered questions.
Apr 7, 2026
The doctor called me to discuss a recent test. The doctor demonstrates concern for patient health and well being.
Mar 31, 2026
Very kind, patient and shared so much education with me. He also asked if I had any questions multiple times.
Mar 31, 2026
Discussed my condition thoroughly and was very Informative.
Mar 31, 2026
VERY POLITEEXPLAINED EVERYTHING TO ME
Mar 23, 2026
Dr Maniu was professional, kind, went over information meticulously and made sure that we understood all information presented.
Mar 16, 2026
Wonderful doctor--caring, clear, professional. He really takes the time to listen and explains everything clearly.
Mar 9, 2026
Knowledgeable and likable
Mar 3, 2026
Very professional. Direct.
Mar 2, 2026
Very helpful in terms of providing specific and concrete suggestions I could do to improve my cardiac health. Listened to my questions and concerns.
Feb 24, 2026
He is absolutely the BEST! Caring, understanding, kind and experienced. His follow up regarding concerns is amazing. He calls to follow up working long hours. You really feel the care and concern. I cannot express enough our appreciation and fondness for Dr. Maniu. I would highly recommend to all!
Feb 23, 2026
Dr Maniu was thorough explaining my case. He gave some advice in taking blood pressure.
Feb 23, 2026
Very professional and respectful.
Feb 2, 2026
My Cardiologist
Jan 20, 2026
Very informative and down to earth who seems genuinely interested in my care
Jan 12, 2026
I was impressed that this doctor actually took the time to look at my medical history in detail prior to the appointment. (I was a new patient). He forgot to tell me something at the apt. So he called me right after the apt. He seems to be very thorough.
Jan 6, 2026
Excellent service, true professional, really put me at ease and explained everything.
Jan 6, 2026
Provider was exceptional!
Dec 23, 2025
Very thorough in my examination. explained his findings in ordinary language which made understanding easy.
Dec 16, 2025
I am very impressed by Dr. Maniu. He listens attentively, explains thoroughly, and has an excellent demeanor.
Dec 9, 2025
Seemed very concerned about my previous treatments and medications. If they aren't doing the job after 10yrs why am I on them. They are very good meds.
Dec 2, 2025
Dr. Maniu became my cardiologist when I moved from Pennsylvania to Maryland in May. Stated simply, I think he's superb.
Dec 1, 2025
First visit with this provider, went well
Nov 10, 2025
Very courtesy and informative. Information was provided In a way to be easy to understand.
Nov 3, 2025
Although this was my first visit with this provider, he knew my case history very well. He was very easy to talk to, and we had very pleasant discussions regarding my care, prognosis and treatment. I trust his judgement and advice. I look forward to seeing him again.
Oct 28, 2025
I was very pleased with my doctor. He spent a good amount of time with me, explained my condition clearly, and listened to me well.
Oct 21, 2025
Professionalism and patient care was illumined and stellar. I greatly appreciate service given!
Oct 21, 2025
Excellent doctor
Oct 21, 2025
The excellent doctor
Oct 14, 2025
I really like Dr. Maniu. Probably one of the best doctors I have had in my health care adventure. He was very thorough and treated me like we are equals not from on "high". I would like him as my PC! He explained everything so simply and completely.
Oct 7, 2025
This was my first visit with Dr. Maniu, as he is replacing [staff] (who retired). Dr. Maniu was very thorough as he acquainted himself with my case by interviewing me and by referral to my records (which he had in front of him). I appreciated his push to gain an overall view of not only my medical condition, but also my personal attitudes and priorities. He also provided a few specific and useful suggestions for my health related behaviors. I am extremely pleased that Dr. Maniu is now my primary cardiologist.
Oct 6, 2025
Dr. Maniu is a wonderful doctor. He is very thorough and caring towards patients.
Sep 15, 2025
Dr Maniu was competent, thorough and professional. He answered all my questions and addressed my concerns with tact and empathy.