
Highlights
Age Groups Seen
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- English
In-Network Plans
View All Accepted Plans (12)Gender
MaleJohns Hopkins Affiliations:
- Johns Hopkins School of Medicine Faculty
About Mark Lazarev
Primary Academic Title
Associate Professor of Medicine
Johns Hopkins Physician
Background
Dr. Lazarev joined Johns Hopkins from the Mount Sinai Medical Center in New York, where he completed the Present-Levison advanced inflammatory bowel disease fellowship.
A specialist in the diagnosis and management of Crohn's disease and ulcerative colitis, Dr. Lazarev has published numerous peer-reviewed articles, abstracts and chapters.
Centers and Institutes
Recent News Articles and Media Coverage
WebMD Perspectives, A Closer Look at Crohn's Disease (2021)
Tales from the Crypt, Inside Tract (Summer, 2016)
Lab Website
Mark Lazarev Lab
- The Mark Lazarev Lab performs clinical research on Inflammatory Bowel Disease.
Honors
Top Doctor, Baltimore Magazine, 1/1/20
Locations
- Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville
- 2360 West Joppa Road, Joppa Concourse STE 205, Lutherville, MD 21093
- Get Directions
- phone: 410-933-7495
- fax: 410-616-7351
Expertise
Education
- Fellowship: The Mount Sinai Hospital, Gastroenterology, 2009
- Fellowship: University of Pittsburgh Medical Center, Gastroenterology, 2008
- Residency: Beth Israel Deaconess Medical Center, Internal Medicine, 2005
- Medical Education: University of Pittsburgh School of Medicine, MD, 2002
Board Certifications
- Gastroenterology: American Board of Internal Medicine, 2008
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)
- Veteran Affairs Community Care Network (Optum-VACCN)
Ratings & Reviews
4.9 out of 5
123 ratings, 48 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 2/23/2026
Extremely thorough and knowledgeable
- 5 out of 5 starsReviewed on 2/13/2026
First time seeing this doctor. Liked him a lot.
- 5 out of 5 starsReviewed on 2/6/2026
This was my first visit to Hopkins and first visit to this provider and both him and the fellow knocked it out of the park! I felt seen, heard, and understood. This was my first medical experience that gave me hope for figuring out my condition!
- 5 out of 5 starsReviewed on 1/26/2026
I always enjoy visiting Dr. Lazarev. Everyone is very friendly and professional.
- 5 out of 5 starsReviewed on 1/12/2026
Dr Lazarev is superb in every way. He is an expert in the girl. He is knowledgeable. And has excellent bedside relationship with patients.
- 5 out of 5 starsReviewed on 1/12/2026
Very knowledgeable, excellent experience!
- 5 out of 5 starsReviewed on 1/12/2026
This Doctor has been with me over a year during a very difficult illness and I credit him for getting me through with his professional expertise
- 5 out of 5 starsReviewed on 1/12/2026
Relaxed, personal, informed.
- 5 out of 5 starsReviewed on 1/9/2026
Dr. Lazarev is the best !
- 5 out of 5 starsReviewed on 1/2/2026
Good doctor
- 5 out of 5 starsReviewed on 1/2/2026
He's the best!! Patient with the elderly,extremely knowledgeable and has great bedside manners.
- 5 out of 5 starsReviewed on 1/2/2026
I had a good overall experience during this visit. Thanks.
- 5 out of 5 starsReviewed on 12/29/2025
Very thorough and caring. Easy to talk with. Good listener. Keeps recent on medicine and procedures.
- 5 out of 5 starsReviewed on 12/29/2025
Dr. Lazarev is very knowledgeable, courteous takes very good treatment for his patients.
- 5 out of 5 starsReviewed on 12/12/2025
I like and highly respect this doctor and his P A. [staff] and administrative assistant, [staff].
- 5 out of 5 starsReviewed on 12/10/2025
Dr Lazarev is a true professional. I definitely appreciate his care and attention to my health and well being.
- 3 out of 5 starsReviewed on 12/5/2025
He spent a total of 5 minutes for our visit
- 5 out of 5 starsReviewed on 12/5/2025
Dr. Lazarev and his team are very thorough and listen to my concerns.
- 5 out of 5 starsReviewed on 11/21/2025
Dr. Lazarev continues to be great to work with on managing my condition. Very thorough and good at explaining things.
- 5 out of 5 starsReviewed on 11/7/2025
Dr.Lazarev always listens to my concerns. I know I am getting the best possible treatment for my ulcerative colitis. I trust him with my csre.
- 5 out of 5 starsReviewed on 10/31/2025
A most knowledgeable scholar of gastronomy medicine. They don't get any better.
- 5 out of 5 starsReviewed on 10/29/2025
Very pleasant and he listens and I never feel rushed
- 5 out of 5 starsReviewed on 10/24/2025
Best health care provider
- 5 out of 5 starsReviewed on 10/20/2025
Dr. Lazarev is an outstanding professional who takes great care of all his patients. Dr. Lazarev is very attentive, thoughtful and kind. He always allows time for me to explain any medical issues of concern, and takes into account everything I say.
- 5 out of 5 starsReviewed on 10/3/2025
1 ST. TIME MEETING THE DOCTOR AND I WAS REALLY IMPRESSED WITH HIM.
- 5 out of 5 starsReviewed on 10/3/2025
Very helpful, very satisfied
- 5 out of 5 starsReviewed on 9/8/2025
Excellent
- 5 out of 5 starsReviewed on 9/5/2025
Dr. Lasarev is a caring , kind and very knowledgeable doctor. I am an oral surgeon and have been involved with medical professionals for over forty years. Dr. Lasarev is truly one of the very best , especially in the medical environment that is our current standard. I am thankful to have him as my GI doctor!!
- 5 out of 5 starsReviewed on 8/18/2025
Dr lazarev and his team ([staff], [staff], and [staff]) are fantastic
- 5 out of 5 starsReviewed on 8/15/2025
He's an excellent Dr!
- 5 out of 5 starsReviewed on 8/1/2025
He really listened when I was explaining what was going on with me. He also explained his decisions.
- 5 out of 5 starsReviewed on 8/1/2025
Very happy with the treatment I received.
- 5 out of 5 starsReviewed on 7/21/2025
Dr Lazarev has been my GI doctor for 13 years. I trust his expertise and treatments and value his willingness to listen and engage me in decisions. He is friendly and responsive to questions promptly.
- 5 out of 5 starsReviewed on 7/18/2025
Good
- 5 out of 5 starsReviewed on 7/14/2025
Dr. Lazarev listened and spent the time needed to address my medical issues.
- 5 out of 5 starsReviewed on 6/27/2025
Good provider, calm, listens
- 5 out of 5 starsReviewed on 6/27/2025
Dr Lazarev is an excellent doctor. He is knowledgeable, spends time listening to my questions and concerns.
- 5 out of 5 starsReviewed on 6/20/2025
I have been with Dr. Lazarev for many years and do not desire to change.
- 5 out of 5 starsReviewed on 6/20/2025
Excellent
- 5 out of 5 starsReviewed on 6/9/2025
He is caring, clear with his wording, and knowledgeable.
- 5 out of 5 starsReviewed on 6/2/2025
Ever the pro.
- 5 out of 5 starsReviewed on 5/16/2025
Dr. Lazarev is extremely: courteous, knowledgeable and patient in regard to answering all of my questions and addressing all of my concerns as they pertain to my health issues.
- 5 out of 5 starsReviewed on 5/9/2025
Always good.
- 5 out of 5 starsReviewed on 5/8/2025
Dr. Lazarev is a very good GI doctor. He listens and shows concerns for his patient.
- 5 out of 5 starsReviewed on 4/28/2025
Dr. Lazarev is the best
- 5 out of 5 starsReviewed on 4/25/2025
I feel I can trust my doctor to listen to me and do or suggest what is best for me and my health
- 5 out of 5 starsReviewed on 4/25/2025
Dr. Lazarev is the reason I travel 3 hours for my ulcerative colitis. He has been treating me for many years and I trust him completely. Dr. Lazarev truly cares about my well being.
- 5 out of 5 starsReviewed on 4/16/2025
No instructions from a nurse. I love Dr Lazarev, but he is always so busy and it it is hard to know when to talk to him when I am ill, BUT he has helped me tremendously with quite a few things after dealing with 14+ years of colitis . I am extremely grateful to him, but we are still working on a few things.