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 Dan Conlon Brennan
Professional Titles
- Medical Director, Comprehensive Transplant Center
Primary Academic Title
Professor of Medicine
Johns Hopkins Physician
Background
Daniel C. Brennan, M.D., joins the Johns Hopkins Division of Renal Medicine as professor of nephrology and medical director of the Comprehensive Transplant Center. Dr. Brennan’s areas of clinical expertise include transplant nephrology and renal disease.
Prior to joining Johns Hopkins, Dr. Brennan was the Alan A. and Edith L. Wolff Professor of renal Diseases at Washington University and the Director of Transplant Nephrology at the Washington University School of Medicine. He received his undergraduate degree from Cornell College and earned his medical degree at the University of Iowa, where he completed a residency in internal medicine. He then completed research and clinical nephrology fellowships at Brigham & Women’s Hospital/Harvard Medical School.
Dr. Brennan holds professional memberships at various organizations, including the American College of Physicians, the International Society of Nephrology, the American Society of Nephrology, The Transplantation Society, the American Society of Transplant Physicians and the American Society of Clinical Investigation.
Centers and Institutes
Find a Clinical Trial
View all trials by this principal investigator.
Videos
Research Interests
Immunosuppression therapy, Outcomes research, Pharmacoeconomics, Transplantation, Transplants, Viral infections
Research Summary
Dr. Brennan’s research interests include viral diseases, especially CMV and BK, in kidney transplant patients, the role of induction therapy, islet transplantation, and pharmacoeconomics and outcomes.
PubMed - Publications
https://www.ncbi.nlm.nih.gov/myncbi/browse/collection/43831949/?sort=date&direction=ascending
Honors
- Alan A. and Edith L. Wolff Professor of Renal Diseases, Washington University School of Medicine
- Senior Clinical Investigator, American Society of Transplantation, 1/1/16
- Distinguished Alumni Leadership and Service Award, Cornell College, 1/1/11
- Neville Grant Award for Clinical Excellence, Barnes-Jewish Hospital/Washington University School of Medicine, 1/1/11
- American Society of Clinical Investigation (ASCI), 1/1/04
- American Society of Transplantation Clinical Science Award, 1/2/03
- National Kidney Foundation Award of Excellence, 1/1/03
- Young Investigator Award, American Society of Transplantation, 1/1/99
Memberships
- American College of Physicians
- International Society of Nephrology
- American Society of Transplant Physicians
- Transplantation Society
- FDA Kidney Health Initiative (KHI)
- American Society of Nephrology
- National Kidney Foundation
- United Network of Organ Sharing (UNOS)
- American Society of Clinical Investigation (ASCI)
- Ad Hoc study reviewer, NIH
- Advisory Committee on Blood and Tissue Safety and Availability (ACBTSA) for HRSA
- The Transplant Society (TTS)
Professional Activities
- American Journal of Transplantation, Associate Editor, 1/1/07 - 1/1/14
- Nephrology, UpToDate, Editor-in-Chief, 1/1/06
- Transplant Section, UpToDate, Editor, 1/1/99
- Transplantation, Deputy Editor, 1/1/15
- Transplantation, Editorial Board, 1/1/98
Locations
- Levi Watkins, Jr., M.D., Outpatient Center
- 601 North Caroline Street, Floor 4, Baltimore, MD 21287
- Get Directions
- phone: 410-614-5700
- fax: 410-502-1532
Expertise
Education
- Fellowship: Brigham and Women's Hospital, Nephrology, 1992
- Residency: University of Iowa Hospitals and Clinics, Internal Medicine, 1988
- Medical Education: University of Iowa College of Medicine, Medicine, MD, 1985
Board Certifications
- Nephrology: American Board of Internal Medicine, 1992
- Internal Medicine: American Board of Internal Medicine, 1988
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
5 out of 5
32 ratings, 19 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 3/4/2026
Provider took the time to explain things to me .
- 5 out of 5 starsReviewed on 3/4/2026
Professional, respectful and explained things to me
- 5 out of 5 starsReviewed on 3/4/2026
Active very professional, they gave me advice about Medication list
- 5 out of 5 starsReviewed on 2/16/2026
Dr Dan Brennan is the best doc you could ever hope for extremely knowledgable and very professional. Hpkins is lucky to have him as am i. [staff] and his whole team are the best thank you.
- 5 out of 5 starsReviewed on 12/30/2025
Very kind and patient with explaining medical terms.
- 5 out of 5 starsReviewed on 12/3/2025
Dr Brennan is very knowledgeable and I feel very confident in the next steps for my health. He answered all my questions and explained the whys. He's a very kind doctor.
- 5 out of 5 starsReviewed on 11/25/2025
Very good person, attentive, respectful, cordial when knowing how to express and communicate with his patient.
- 5 out of 5 starsReviewed on 11/25/2025
Very useful for my needs and concern
- 5 out of 5 starsReviewed on 11/12/2025
Gained rich knowledge from the doctors and the whole medical team about my health condition
- 5 out of 5 starsReviewed on 10/21/2025
Wonderful!
- 5 out of 5 starsReviewed on 10/10/2025
Love Dr Brennan. He is the reason why I travel from northern VA to Baltimore to be seen.
- 5 out of 5 starsReviewed on 10/7/2025
Hi is very knowledgeable and very up to date.
- 5 out of 5 starsReviewed on 9/5/2025
Excellent
- 5 out of 5 starsReviewed on 8/25/2025
The Best. Caring, detailed and precise.
- 5 out of 5 starsReviewed on 8/11/2025
He is very professional and cares a lot about his patients.
- 5 out of 5 starsReviewed on 7/22/2025
He was helpful, answered all questions The wait was too long from the appointment
- 5 out of 5 starsReviewed on 6/12/2025
My provider explained my diagnosis in the way that it was easy to understand
- 5 out of 5 starsReviewed on 6/4/2025
Very good and through
- 5 out of 5 starsReviewed on 6/2/2025
Excellent Physician !! Great communication skills and sense of humor; Dr. Brennan stays up to date on the most recent research and information; He is compassionate, thorough and uses common sense.