
Highlights
Johns Hopkins Affiliations:
- Johns Hopkins Community Physicians
About Maria Kiely
Johns Hopkins Clinician
Background
Maria Ximena Traa Kiely, BMBCh, MPH, is a fellowship-trained colon and rectal surgeon at Johns Hopkins Medicine. Dr. Kiely was trained in general and colorectal surgery with expertise in minimally invasive management of colon, rectal, and anal cancers, inflammatory bowel disease, diverticulitis, pelvic floor and functional disorders of the colon/rectum, hemorrhoids, fistulas, fissures and general anorectal health. She has extensive experience with minimally invasive laparoscopic, robotic and trans-anal techniques, particularly for rectal cancer care and complex pelvic disease.
Prior to joining Johns Hopkins, Dr. Kiely was named “Top Doctor” for Colon and Rectal Surgery by her Oregon physician peers five years in a row. She was managing partner of a large multi-specialty surgical group and had many years of experience training colon and rectal surgery fellows, as well as general surgery residents. During her general surgery residency at Tufts Medical Center, she served as administrative chief resident. Dr. Keily has many years of experience in her prior position working in a Nationally Accredited Program in Rectal Cancer. She is committed to advancing high-quality, patient-centered care. She is fluent in English, Spanish and Dutch, and brings a global perspective to her work, having also trained and worked in the United Kingdom.
Dr. Kiely is deeply passionate about helping patients navigate the challenges of colon, anal and rectal health. She is dedicated to creating a supportive and empathetic environment where patients feel seen, heard and empowered in their care. Whether guiding someone through a colorectal cancer diagnosis or helping to manage a chronic condition, she values the trust her patients place in her during vulnerable moments. Dr. Kiely sees patients at her Arlington clinic and performs surgeries primarily at Sibley Memorial Hospital.
Locations
- Johns Hopkins Colorectal Surgery at Arlington
- 4102 Wilson Boulevard, Floor 2, Arlington, VA 22203
- Get Directions
- phone: 703-462-1777
- fax: 703-955-3946
- Sibley Memorial Hospital
- 5215 Loughboro Road Northwest, Suite 300, Washington, DC 20016
- Get Directions
- phone: 443-997-1508
- fax: 202-244-4129
Expertise
Education
- Fellowship: Oregon Health & Science University Hospital, Colon and Rectal Surgery, 2018
- Residency: Tufts Medical Center, General Surgery , 2017
- Graduate School: Harvard School of Public Health, MPH, 2015
- Medical Education: University of Oxford School of Medicine, BM BCh, 2010
Board Certifications
- Colon and Rectal Surgery: American Board of Colon and Rectal Surgery, 2019
- Surgery (General Surgery): American Board of Surgery, 2017
Insurance
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
Ratings & Reviews
4.9 out of 5
76 ratings, 29 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 3/16/2026
Excellent provider from all aspects
- 5 out of 5 starsReviewed on 3/12/2026
Excellent visit. Explains things well and patiently.
- 5 out of 5 starsReviewed on 2/23/2026
The doctor was excellent at communication. They had a great bedside manner for the type of services they provide. She explained the issues very well and did not push unnecessary procedures. I feel comfortable with the course of action recommended
- 5 out of 5 starsReviewed on 2/19/2026
Dr. Kiely is without a doubt the best medical practitioner I've ever seen. Her demeanor is professional, yet friendly and compassionate. Her incredible bedside manner put me at ease during my first ever colorectal exam. She recommended a conservative, non-surgical treatment for my condition, which provided immediate pain relief and improved my quality of life over subsequent weeks. If you have reservations about seeing a colorectal surgeon. I implore you to give Dr. Kiely a chance. I trust her with my life.
- 5 out of 5 starsReviewed on 2/19/2026
Dr Kiely was great. She was easy to talk to about a personal issue and provided me with a course of treatment that I'm very hopeful will resolve things for me.
- 5 out of 5 starsReviewed on 2/17/2026
AMAZING
- 5 out of 5 starsReviewed on 2/9/2026
Excellent manner in a very intimate condition with reassuring explanations and a quick solution performed in the office very professionally without complications
- 5 out of 5 starsReviewed on 2/3/2026
Dr. Maria Kiely is an outstanding doctor who is very compassionate, knowledgeable, well prepared and gentle. This is my first visit but she already read all my medical histories, my tests, my medications,etc. She is incredibly smart, efficient, and humble. She treated respects and kindness. I would recommend her highly to my family and friends. Thank you Dr. Kiely from my heart!
- 5 out of 5 starsReviewed on 1/29/2026
Excellent
- 5 out of 5 starsReviewed on 1/22/2026
Two previous providers had just said I had some sort of infection, and had made no effort to find out what it was or treat it. This was the first who took tests and let me know what it was. This was helpful both in getting treatment and in notifying contacts.
- 5 out of 5 starsReviewed on 1/15/2026
I feel privileged to have my doctor provide medical care for me.
- 5 out of 5 starsReviewed on 1/8/2026
Warm and friendly. Knowledgeable about the problem I came in for. Efficient operation.
- 5 out of 5 starsReviewed on 1/6/2026
Excellent care so far
- 5 out of 5 starsReviewed on 1/5/2026
Excellent
- 5 out of 5 starsReviewed on 12/22/2025
Dr. Maria Ximena was very kind and patient; she carefully listened to what I had to say, and she explained everything so I could better understand and have peace of mind.
- 5 out of 5 starsReviewed on 12/19/2025
Excellent clinician and caring and thoughtful surgeon.
- 5 out of 5 starsReviewed on 12/15/2025
Excellent at what they do.
- 5 out of 5 starsReviewed on 12/9/2025
Doc is great. She is patient, knowledgeable and I would absolutely recommend JHM and my doctor.
- 5 out of 5 starsReviewed on 11/20/2025
Dr Kiely is a treasure. Great addition to the system! Smart, caring and intentional.
- 5 out of 5 starsReviewed on 11/3/2025
Thankful for your help.
- 5 out of 5 starsReviewed on 10/30/2025
She provided information we needed!
- 5 out of 5 starsReviewed on 10/27/2025
Dr Kiely is outstanding. So Glad I was referred to her by my surgical oncologist,
- 5 out of 5 starsReviewed on 10/27/2025
The actual doctor was the best doctor ever, honestly. The level of care I received was un matched
- 5 out of 5 starsReviewed on 9/9/2025
The doctor and the assistant were very professional
- 5 out of 5 starsReviewed on 9/4/2025
Perfect.
- 5 out of 5 starsReviewed on 8/21/2025
Office was very professional and caring.
- 5 out of 5 starsReviewed on 8/18/2025
Excellent doctor and office visit!!
- 5 out of 5 starsReviewed on 8/14/2025
She was great
- 5 out of 5 starsReviewed on 8/7/2025
Dr. Kiely was very knowledgeable, caring, courteous and friendly. She was communicating in both directions, listen to my concerns, assess them and make recommendations accordingly. She did a good and a highly professional medical care along with her team.