
Highlights
Age Groups Seen
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- English
In-Network Plans
View All Accepted Plans (11)Gender
FemaleJohns Hopkins Affiliations:
- Johns Hopkins Community Physicians
About Maureen C Fennell
Johns Hopkins Physician
Background
Maureen Collins Fennell, M.D., F.A.C.C., received her medical degree from Jefferson Medical College - Thomas Jefferson University. She completed her cardiology fellowship at Duke University Medical Center.
She practices noninvasive cardiology and her special interests include valvular heart disease, preventive heart disease, women and heart disease, peripheral arterial disease, nuclear cardiology, echocardiography and peripheral vascular ultrasound.
Locations
- Johns Hopkins Medicine Cardiology, Rockville
- 15005 Shady Grove Road, Suite 340, Rockville, MD 20850
- Get Directions
- phone: 240-238-3760
- fax: 410-367-2112
- Johns Hopkins Health Care & Surgery Center — Bethesda
- 6410 Rockledge Drive, Suite 200, Bethesda, MD 20817
- Get Directions
- phone: 301-897-5301
- fax: 410-367-2059
Expertise
Education
- Fellowship: Duke University Hospital, Cardiovascular Disease, 1997
- Residency: University of Maryland Medical Center, Internal Medicine, 1994
- Medical Education: Sidney Kimmel Medical College, MD, 1991
Board Certifications
- Cardiovascular Disease: American Board of Internal Medicine, 1997
Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
Ratings & Reviews
4.8 out of 5
361 ratings, 120 reviewsThe 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.
- 5 out of 5 starsReviewed on 3/13/2026
She was courteous and professional
- 5 out of 5 starsReviewed on 3/12/2026
I really like this MD
- 5 out of 5 starsReviewed on 3/11/2026
I have always received timely care and clear advice.
- 5 out of 5 starsReviewed on 3/11/2026
Very pleasant and excellent knowledge.
- 5 out of 5 starsReviewed on 3/10/2026
Very good service
- 5 out of 5 starsReviewed on 3/5/2026
Dr Fennell was very professional and personable. She understood my unique medical history and was even able to find prior records when I thought I did not have any.
- 5 out of 5 starsReviewed on 3/5/2026
All my questions were answered very satisfactorily
- 5 out of 5 starsReviewed on 3/4/2026
Provided me with excellent and simple strategies to keep my heart in top condition.
- 5 out of 5 starsReviewed on 3/4/2026
The doctor was great. She took the time to get my records from a hospital in SC. Many don't
- 5 out of 5 starsReviewed on 3/3/2026
The best Physician
- 5 out of 5 starsReviewed on 3/2/2026
Best of the best doctor
- 5 out of 5 starsReviewed on 2/27/2026
Dr Fennell is a wonderful, caring, and knowledgeable cardiologist. I feel very fortunate to have her on my medical team.
- 5 out of 5 starsReviewed on 2/20/2026
Provided great service
- 5 out of 5 starsReviewed on 2/18/2026
I have a great deal of respect for Doctor Maureen. She takes the time to listen attentively to my concerns and provides clear, concise answers to all my questions. Her positive attitude and genuine enthusiasm for her work are evident in the care she provides, and I appreciate the way she explains the reasoning behind any medication she prescribes, as well as how we will monitor its effectiveness.Her attentiveness and expertise have earned my trust.
- 5 out of 5 starsReviewed on 2/18/2026
She answered my questions and reassured me that I did not need any invasive treatments or additional medication
- 5 out of 5 starsReviewed on 2/17/2026
I like her. She's very bright and makes helpful suggestions.
- 5 out of 5 starsReviewed on 2/13/2026
Maureen is the best !
- 5 out of 5 starsReviewed on 2/13/2026
Provider is very helpful.
- 5 out of 5 starsReviewed on 2/6/2026
She is open, and explains things well. She is also very thorough with follow-ups.
- 5 out of 5 starsReviewed on 2/6/2026
So confident with this provider,she listens to me carefully and she always makes sure that I understand what she said
- 5 out of 5 starsReviewed on 2/5/2026
Dr Maureen Fennell was very pleasant, knowledgeable about my cardiac issues and very helpful.
- 5 out of 5 starsReviewed on 2/5/2026
Provided information that I need very well
- 5 out of 5 starsReviewed on 2/3/2026
I just moved to Maryland, and this was my first visit with Dr. Fennell. I was very impressed with her and felt comfortable during our visit. She adjusted the amount of high blood pressure medication I'm currently on. She ordered several tests that will be completed in the next 6 weeks, and then I'll have a follow-up visit with her.
- 5 out of 5 starsReviewed on 2/3/2026
Visit was good and productive. Provider explained my test results in a thorough and understandable manner.
- 5 out of 5 starsReviewed on 1/29/2026
My provider was very excellent and very friendly, they explained my health problem very well and clearly
- 5 out of 5 starsReviewed on 1/26/2026
Excellent physician
- 5 out of 5 starsReviewed on 1/22/2026
Dr. Fennell is a very knowledgable professional doctor who treated my symptoms hands on.My wife and I have visited her for our hearts heath and do recommend her.
- 5 out of 5 starsReviewed on 1/22/2026
Thank you Dr. Fennell for your patience and explaining everything to me in great detail.
- 5 out of 5 starsReviewed on 1/21/2026
I have been going to this provider since I have had Dr. Fennell.
- 5 out of 5 starsReviewed on 1/20/2026
Good knowledge, care, warm
- 5 out of 5 starsReviewed on 1/20/2026
Very good
- 5 out of 5 starsReviewed on 1/20/2026
Dr. Fennell continues to inspire confidence that I'm receiving quality care.
- 5 out of 5 starsReviewed on 1/15/2026
I messaged Dr Fennell on January 14 and the following day she found time to have me do a video visit which was wonderful. Dr Fennell is an excellent physician
- 5 out of 5 starsReviewed on 1/14/2026
Dr. Fennell
- 5 out of 5 starsReviewed on 1/12/2026
Dr Fennell is a very concerned and compassionate practitioner. She instills confidence that we are on the correct path. We discussed nearly every aspect of heart health, including diet and nutrition, exercise, cardiac-tracking devices, and continued blood pressure monitoring.
- 5 out of 5 starsReviewed on 12/31/2025
Excellent
- 5 out of 5 starsReviewed on 12/31/2025
Extremely knowledgeable and thorough.
- 5 out of 5 starsReviewed on 12/31/2025
She was professional and a good communicator as well as listener. She seemed very experienced and knowledgeable.
- 5 out of 5 starsReviewed on 12/30/2025
Dr Fennell is always on top of things, very thorough in her exam, professional yet personable. I find that she'd rather err on the side of safety rather than take any chances.
- 5 out of 5 starsReviewed on 12/23/2025
Highly knowledgeable.
- 5 out of 5 starsReviewed on 12/22/2025
Great
- 5 out of 5 starsReviewed on 12/22/2025
The Dr was very thorough.
- 3 out of 5 starsReviewed on 12/19/2025
Provider was robotic. Nothing special.
- 5 out of 5 starsReviewed on 12/12/2025
She was very knowledgeable, and had an excellent bedside manner. She patiently explained my plan of care. I am truly satisfied with my visit.
- 5 out of 5 starsReviewed on 12/12/2025
The doctor was professional, caring and made us feel comfortable.
- 5 out of 5 starsReviewed on 12/11/2025
Fennell, is personable, listened well, asked pertinent questions, wants to see me in 6 mos., as I'm still a new patient, and she wants to keep on top of things
- 5 out of 5 starsReviewed on 12/11/2025
Excellent service, unable to visit her for while.
- 5 out of 5 starsReviewed on 12/10/2025
I have been a patient of Dr. Fennell for quite a few years. We have an excellent rapport. I find her to be an excellent provider.
- 5 out of 5 starsReviewed on 12/4/2025
Dr M Fennell is very good
- 5 out of 5 starsReviewed on 12/4/2025
Very helpful !
- 3 out of 5 starsReviewed on 12/3/2025
Fennell
- 5 out of 5 starsReviewed on 12/2/2025
Satisfied
- 5 out of 5 starsReviewed on 11/26/2025
Auperb
- 5 out of 5 starsReviewed on 11/26/2025
Everything was perfect
- 5 out of 5 starsReviewed on 11/21/2025
Professional and competent
- 5 out of 5 starsReviewed on 11/20/2025
Dr. Fennell was very nice and answered my questions. She also made so.e recommendations that we will look into.
- 5 out of 5 starsReviewed on 11/19/2025
She listened to my concerns. Ordered tests to help shed light on what I was going through. Comforting when I was anxious.
- 5 out of 5 starsReviewed on 11/14/2025
They were super
- 5 out of 5 starsReviewed on 11/13/2025
Dr. Fennell is a professional and very knowledgeable person about my symptoms
- 5 out of 5 starsReviewed on 11/12/2025
Excellent
- 5 out of 5 starsReviewed on 11/11/2025
Best cardiologist ever!
- 5 out of 5 starsReviewed on 11/5/2025
Dr. Fennell is excellent. She is a good listener and gives good advice.
- 5 out of 5 starsReviewed on 11/3/2025
She listens carefully and provides the necessary information.
- 5 out of 5 starsReviewed on 10/29/2025
Great appointment- very comfortable and informative.
- 4 out of 5 starsReviewed on 10/28/2025
Very knowledgeable and polite.
- 5 out of 5 starsReviewed on 10/24/2025
She listened to all my complaints and questions. The visit went very well. I left feeling that I knew what to do to handle my problems.
- 5 out of 5 starsReviewed on 10/20/2025
Outstanding
- 5 out of 5 starsReviewed on 10/20/2025
Glad she is back.
- 5 out of 5 starsReviewed on 10/17/2025
She has given me the information I need to take care od my heart
- 5 out of 5 starsReviewed on 10/9/2025
Very professional and knowledgeable.
- 5 out of 5 starsReviewed on 10/9/2025
Very professional and nice Thorough in asking about health concerns
- 5 out of 5 starsReviewed on 10/8/2025
Knowledgeable and experienced
- 5 out of 5 starsReviewed on 10/7/2025
Dr fennell is very patient and explained things well.
- 5 out of 5 starsReviewed on 9/29/2025
I really like Dr. Fennell. Very knowledgeable and concise and pleasant.
- 5 out of 5 starsReviewed on 9/25/2025
Maureen Fennell
- 5 out of 5 starsReviewed on 9/23/2025
Very knowledgeable and helpful
- 5 out of 5 starsReviewed on 9/9/2025
Dr Fennell is always considerate & explains everything Listens to patient
- 4 out of 5 starsReviewed on 9/4/2025
Doctor Maureen Fennell.
- 5 out of 5 starsReviewed on 9/3/2025
MD visit not on time. It was 15 min early!!!! Good work!!!!!
- 5 out of 5 starsReviewed on 9/3/2025
Great seemed carong and concerned
- 5 out of 5 starsReviewed on 9/2/2025
Dr Fennell is a wonderful practitioner, smart and patient.
- 5 out of 5 starsReviewed on 8/28/2025
The procedure was less stressful than I anticipated. Providers were very explicit and made the test easier that ones in the past
- 5 out of 5 starsReviewed on 8/25/2025
Thorough. Likeable
- 5 out of 5 starsReviewed on 8/25/2025
I feel safe with her advice and care for my health, she is very sincere when talking she tells me the pros and cons of medicines when I ask her
- 5 out of 5 starsReviewed on 8/25/2025
Excellent Physician
- 5 out of 5 starsReviewed on 8/22/2025
Thank you!
- 5 out of 5 starsReviewed on 8/15/2025
Dr Fennell is an excellent and caring cardiologist.
- 5 out of 5 starsReviewed on 8/12/2025
I sought out Dr. Fennell because I wanted a female cardiologist who understood menopause and how it relates to cardiovascular health. she listened, understood, and offered support. I would recommend her highly to any woman at this stage of life.
- 5 out of 5 starsReviewed on 8/7/2025
Excellent physician with superb communication skills. She called me about one hour after the stress test to relay the results and give me further information.
- 5 out of 5 starsReviewed on 8/5/2025
Dr Fennell was very pleasant and knowledgeable. She questioned me thoroughly about how I was feeling, checked my breathing, and phoned In my prescriptions that needed filled In. I am very happy having Dr Fennell as my Doctor.
- 5 out of 5 starsReviewed on 7/29/2025
Professional, courteous, knowledgeable and helpful.
- 5 out of 5 starsReviewed on 7/17/2025
I enjoy all my visits with Dr. Fennell, she takes a hands on approach to providing care for me and makes me a part of the decision making.
- 5 out of 5 starsReviewed on 7/17/2025
Dr. M. Fennell was professional in her mannerisms and I found her to be knowledgeable. She's even keel in her approach to your medical needs.
- 5 out of 5 starsReviewed on 7/17/2025
Dr. Fennell is a great physician.
- 5 out of 5 starsReviewed on 7/16/2025
Very Good Provider and knowledgeable
- 5 out of 5 starsReviewed on 7/14/2025
Excellent medical care
- 4 out of 5 starsReviewed on 7/11/2025
I find her to be a bit abrupt. But, I do like her.
- 5 out of 5 starsReviewed on 7/3/2025
Excellent Physician.
- 5 out of 5 starsReviewed on 6/27/2025
Dr. Fennell is absolutely fantastic and incredibly thorough. Explains everything very well.
- 5 out of 5 starsReviewed on 6/20/2025
Dr. Fennell was very calm and friendly. I hadn't seen her before, but she had reviewed my records.
- 5 out of 5 starsReviewed on 6/19/2025
My only disappointment is that available appointments with my regular cardiologist are so many months away.
- 5 out of 5 starsReviewed on 6/19/2025
My visit was very good. Dr. Fennell, took the time to explain in detail about my current condition. I feel very comfortable with the results.
- 5 out of 5 starsReviewed on 6/18/2025
Very friendly respectful good listener. Felt comfortable. I have my follow up appointment
- 5 out of 5 starsReviewed on 6/11/2025
This was my first visit with DR Fennell, since my prior cardiologist retired
- 5 out of 5 starsReviewed on 6/10/2025
Excellent physician. Caring humble whip-smart. She needs a substantial raise with stock options!
- 5 out of 5 starsReviewed on 6/4/2025
Excellent communication Excelllent bedside manner
- 5 out of 5 starsReviewed on 5/28/2025
Dr. Fennell is a knowledgeable, caring professional who takes the time to explain things and look at my entire health pannell. Very happy with her care. [Patinet's name]
- 5 out of 5 starsReviewed on 5/28/2025
Thorough, professional, polite, don't rush patients, adds results to MyChart in a timely manner
- 5 out of 5 starsReviewed on 5/23/2025
I've had this provider for greater than 10 yrs. She's always knowledgeable. Well informed about my condition and expresses interest in my concerns.. Her med tech [staff] demonstrated a high level of performance in her duties.
- 5 out of 5 starsReviewed on 5/19/2025
Excellent communicator, friendly, kind - and knowledgeable. I enjoyed meeting Dr Fennell and will return if I have a cardiac concern.
- 4 out of 5 starsReviewed on 5/19/2025
She seems very knowledgeable and I'm sure she's extra pressure to get to the next patient but she could spend more time with you.
- 5 out of 5 starsReviewed on 5/16/2025
Love Dr. Fennell. She was very professional, easy to talk to, knowledgeable, and thorough. I feel lucky to have a cardiologist like Dr. Fennell
- 5 out of 5 starsReviewed on 5/15/2025
My first visit with her due to my concern about high blood pressure. She was very reassuring and helpful. I appreciated her advice.
- 5 out of 5 starsReviewed on 5/15/2025
Dr. Fennell is very kind, professionalism and attentive listener that have truly made a difference for her patients. Thank you!
- 5 out of 5 starsReviewed on 5/14/2025
This was my first visit with Dr Fennell. While I didn't get any tests or procedures done during the visit, I am scheduled for an Echo in July since my last was in 2019
- 5 out of 5 starsReviewed on 5/13/2025
Great visit
- 5 out of 5 starsReviewed on 5/12/2025
Very knowledgeable and thoughtful, and willing to go out of her way to be helpful. My wife has given permission for Dr. Fennell to talk to me about her condition and care. During my visit, Dr. Fennell asked about my wife, and when she heard the details, she arranged to see my wife the next day. That visit was also very helpful. Very pleased.
- 5 out of 5 starsReviewed on 5/12/2025
Dr. Fennell is both very professional and very personable. I trust her. And she makes my checkups a pleasant and constructive experience.
- 5 out of 5 starsReviewed on 5/1/2025
She's great
- 5 out of 5 starsReviewed on 4/21/2025
Dr Fennell is the best! She's thoughtful in creating an intervention plan and such a good listener!