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Calin Maniu

Calin Maniu, MD

Interventional CardiologyCardiology

Accepting New Patients

Highlights

Age Groups Seen

  • Young Adult 18-25
  • Adult 26-64
  • Older Adult 65+

Languages

  • Romanian
  • German
  • English

Gender

Male

Johns Hopkins Affiliations:

  • Johns Hopkins School of Medicine Faculty

About Calin Maniu

Primary Academic Title

Assistant Professor of Medicine

Johns Hopkins Physician

Logo for Johns Hopkins Physician

Background

Dr. Maniu joins the interventional section as an interventional cardiologist with over two decades of experience in academic, hospital, and community settings. He earned his medical degree from Carol Davila University of Medicine and Pharmacy in Bucharest, Romania, and completed his residency in Internal Medicine, as well as fellowships in Cardiovascular Diseases and Interventional Cardiology, at the Mayo Clinic in Jacksonville and Rochester.

Clinically, Dr. Maniu sees outpatients at the Cardiology Clinic in Columbia, and he will cover the interventional lab at Howard County Medical Center. Also, he interprets outpatient echos, primarily at our Columbia Clinic office.

Locations

  1. Johns Hopkins Endoscopy & Surgery Center - Columbia

Expertise

Education

  • Fellowship: Mayo Clinic College of Medicine, Interventional Cardiology, 2003
  • Fellowship: Mayo Clinic College of Medicine, Cardiovascular Disease, 2002
  • Residency: Mayo Clinic College of Medicine, Internal Medicine, 1999
  • Medical Education: University of Medicine & Pharmacy Carol Davila, MD, 1995

Board Certifications

  • Interventional Cardiology: American Board of Internal Medicine, 2003
  • Cardiovascular Disease: American Board of Internal Medicine, 2002

Insurance

Please contact the location directly to confirm your health plan is accepted.
Search plans
  • First Health
  • Geisinger Health Plan
  • HealthSmart/Accel
  • MultiPlan
  • Pennsylvania's Preferred Health Networks (PPHN)
  • Point Comfort Underwriters
  • Private Healthcare Systems (PHCS)
  • Veteran Affairs Community Care Network (Optum-VACCN)

Ratings & Reviews

4.9 out of 5

109 ratings, 34 reviews

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

Overall Rating by Patient
Provider Listened Carefully
Provider Explained Things Clearly
Provider Knew Medical History
Provider Showed Respect
Provider Spent Enough Time
Search reviews
    5 out of 5 stars
    Reviewed on 3/23/2026

    Dr Maniu was professional, kind, went over information meticulously and made sure that we understood all information presented.

    5 out of 5 stars
    Reviewed on 3/16/2026

    Wonderful doctor--caring, clear, professional. He really takes the time to listen and explains everything clearly.

    5 out of 5 stars
    Reviewed on 3/9/2026

    Knowledgeable and likable

    5 out of 5 stars
    Reviewed on 3/3/2026

    Very professional. Direct.

    5 out of 5 stars
    Reviewed on 3/2/2026

    Very helpful in terms of providing specific and concrete suggestions I could do to improve my cardiac health. Listened to my questions and concerns.

    5 out of 5 stars
    Reviewed on 2/24/2026

    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!

    5 out of 5 stars
    Reviewed on 2/23/2026

    Very professional and respectful.

    5 out of 5 stars
    Reviewed on 2/23/2026

    Dr Maniu was thorough explaining my case. He gave some advice in taking blood pressure.

    5 out of 5 stars
    Reviewed on 2/2/2026

    My Cardiologist

    5 out of 5 stars
    Reviewed on 1/20/2026

    Very informative and down to earth who seems genuinely interested in my care

    5 out of 5 stars
    Reviewed on 1/12/2026

    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.

    5 out of 5 stars
    Reviewed on 1/6/2026

    Excellent service, true professional, really put me at ease and explained everything.

    5 out of 5 stars
    Reviewed on 1/6/2026

    Provider was exceptional!

    5 out of 5 stars
    Reviewed on 12/23/2025

    Very thorough in my examination. explained his findings in ordinary language which made understanding easy.

    5 out of 5 stars
    Reviewed on 12/16/2025

    I am very impressed by Dr. Maniu. He listens attentively, explains thoroughly, and has an excellent demeanor.

    5 out of 5 stars
    Reviewed on 12/9/2025

    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.

    5 out of 5 stars
    Reviewed on 12/2/2025

    Dr. Maniu became my cardiologist when I moved from Pennsylvania to Maryland in May. Stated simply, I think he's superb.

    5 out of 5 stars
    Reviewed on 12/1/2025

    First visit with this provider, went well

    5 out of 5 stars
    Reviewed on 11/10/2025

    Very courtesy and informative. Information was provided In a way to be easy to understand.

    5 out of 5 stars
    Reviewed on 11/3/2025

    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.

    5 out of 5 stars
    Reviewed on 10/28/2025

    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.

    5 out of 5 stars
    Reviewed on 10/21/2025

    The excellent doctor

    5 out of 5 stars
    Reviewed on 10/21/2025

    Professionalism and patient care was illumined and stellar. I greatly appreciate service given!

    5 out of 5 stars
    Reviewed on 10/21/2025

    Excellent doctor

    5 out of 5 stars
    Reviewed on 10/14/2025

    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.

    5 out of 5 stars
    Reviewed on 10/7/2025

    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.

    5 out of 5 stars
    Reviewed on 10/6/2025

    Dr. Maniu is a wonderful doctor. He is very thorough and caring towards patients.

    5 out of 5 stars
    Reviewed on 9/15/2025

    Dr Maniu was competent, thorough and professional. He answered all my questions and addressed my concerns with tact and empathy.

    5 out of 5 stars
    Reviewed on 8/19/2025

    Transfer from a retired doctor to new provider. New doctor was knowledgeable and concerned. Will need more contact with this provider to gather additional information.

    5 out of 5 stars
    Reviewed on 8/18/2025

    He was fantastic.

    5 out of 5 stars
    Reviewed on 8/18/2025

    This was the first appointment and he was very attentive to my condition. I was totally at ease after speaking to him.

    5 out of 5 stars
    Reviewed on 8/12/2025

    MD gave advice about fu care

    5 out of 5 stars
    Reviewed on 8/11/2025

    They were all very professional

    5 out of 5 stars
    Reviewed on 8/11/2025

    He explained things well. Provided information I need In future