Maureen C Fennell, MD
Cardiology
Johns Hopkins Medicine Cardiology
15005 Shady Grove Road, Suite 340
Rockville, MD 20850 Directions
4.8 out of 5
416 verified ratings
416 Ratings, 131 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 30, 2026
Dr. Fennell has a pleasant personality and is very thorough.
Jun 29, 2026
This is my first encounter with herShe is excellent.
Jun 26, 2026
Dr. Fennell is clear and informative. I feel secure with her care.
Jun 26, 2026
Dr Fennell is an excellent physician. She is thorough, friendly; doesn't rush her visit, and provides excellent care.
Jun 17, 2026
Excellent medical care and very attentive.
Jun 17, 2026
Dr Did hand Hygiene
Jun 16, 2026
Very professional
Jun 15, 2026
It was my first visit to this office and doctor, Dr. Fennell was very understanding and I felt at ease talking to her.
Jun 4, 2026
Informative yet friendly. Knows her stuff.
Jun 4, 2026
Dr Fennell has always been very professional and attentive to my needs. She has my complete trust.
Jun 4, 2026
[staff] had been my cariologist since 2013, and when he retired, I was bereft. I tried his "replacement" in Columbia and did not feel supported or safe. Dr. Fennell was everything I was looking for -- a straight shooter, just like [staff], but advice always offered with respect for my personal agency. She's a keeper.
Jun 3, 2026
Dr Fennell was thoughtful, professional, and helpful regarding my health.
Jun 2, 2026
Dr Fennell is VERY thorough and spends time with you to determine the best way forward in terms of tests, labs, etc. She also replies to portal questions almost immediately.
Jun 2, 2026
Calm, pleasent, good communication of my condition findings.
May 28, 2026
Dr. Fennell is my cardiologist, not a General Practioner so I don't speak with her about injuries or illnesses other than cardiovascular symptoms.
May 26, 2026
The appointment went pretty well. I felt nervous about seeing a cardiologist, but came to realize that the doctor wanted to check on my heart just to make sure everything is ok.
May 26, 2026
Professional and efficient
May 22, 2026
Awesome!
May 22, 2026
Dr. Fennell listens and is interested in data along with what I had to say. I like the fact that she is data driven regarding treatment decisions.
May 21, 2026
Very helpful and extremely informative
May 21, 2026
Dr. Fennell was great. I also want to praise nuclear medicine technician [staff]. She did so much to dispel my anxiety about the test. She listened, she was sympathetic, she explained everything several times and very clearly, and spent a good amount of time talking with me. Beyond expectations. She is awesome
May 21, 2026
Great provider
May 19, 2026
Very efficient, got results and comments back the day of
May 19, 2026
Outstanding Dr.
May 15, 2026
Dr Fennell is great. She's straight-forward and communicates clearly.
May 15, 2026
Dr. Fennell Was very professional and pleasant. She listened to my concerns and advised me on actions that I should take.
May 14, 2026
Great job
May 14, 2026
SHE IS THE BEST!
May 13, 2026
The doctor sent me to Suburban Hospital to see if my heart is okay, because she found something wrong
May 12, 2026
Great service. Dr Fennell was very helpful.
May 12, 2026
Dr. Fennell recognized, after my EKG, that I needed to go to the emergency room by ambulance, immediately.
May 11, 2026
Dr Fennell is great, easy to talk to and keeping an eye out for my health
May 7, 2026
Dr Fennell continues to provide me with sound care and good care.
May 6, 2026
I am very happy to have Dr. Fennell as my Cardiologist who is very caring and concerned about my health and well being.
May 6, 2026
Dr. Fennell is easy to talk to. Seems patient and will take her time with me.
May 5, 2026
Dr Fennell has proven to me to be a very good and trustworthy doctor. I respect her opinion and try to accomplish the goals and objectives she sets for me. I have recommended her to family members.
Apr 24, 2026
I have had her as my provider for many years and I trust hher completely to manage my cardiac care.
Apr 24, 2026
Dr. Fennell has provided advice on meds given by less experienced providers. I rely on her and my endocrinologist for advice on meds prescribed by my primary care physician.
Apr 23, 2026
Create with respect, and with the results
Apr 22, 2026
Courteous and professional
Apr 22, 2026
I really appreciate Dr. Fennell's knowledge, bedside manner and skill. She is very easy to talk to.
Apr 22, 2026
Good service and care.
Apr 20, 2026
Outstanding
Apr 16, 2026
She remembered complicated background information about me.
Apr 15, 2026
Excellent
Apr 15, 2026
Dr Maureen Fennell makes you feel at home and relaxed In all entirety
Apr 14, 2026
Dr Fennell is wonderful, thorough, easy to understand and congenial. Glad she was recommended to me!
Apr 14, 2026
I came to John's Hopkins because of this cardiologist
Apr 13, 2026
Good
Apr 8, 2026
Great office personnel and docs. Dr Fennell is terrific