Maureen C Fennell, MD
Cardiology
Johns Hopkins Medicine Cardiology
15005 Shady Grove Road, Suite 340
Rockville, MD 20850 Directions
4.8 out of 5
417 verified ratings
417 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.
Sep 10, 2026
Dr Fennell did a very good job of explaining what I needed to do to heal from my internal bleeding and when I should start taking the Eliquis again.
Sep 3, 2026
Last response was very good but my provider is retiring, so won't be making referrals to her
Sep 2, 2026
This was a stress test on the treadmill, so provider didn't need to so some of the things listed above, but both the technician and the doctor were very nice and professional.
Aug 28, 2026
Excellent service and very friendly
Aug 26, 2026
Good
Aug 24, 2026
Dr Fennell and I discussed treatment options, and she presented her opinions of the several possible treatments including medicine-based options as well as other more invasive procedures. The choices were left for me to ponder and choose the option that fits my lifestyle and circumstances.
Aug 14, 2026
Dr. Fennell is a great doctor, she listens attentively. She is also kind and compassionate.
Aug 13, 2026
Yes I have recommend her to many people. Some have become her patients.
Aug 12, 2026
Dr. Fennell provides excellent care.
Aug 11, 2026
Dr Fennell is outstanding
Jul 16, 2026
Definitely
Jul 1, 2026
Dr Fennell has always been terrific!
Jul 1, 2026
All good.
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.