Dr. Daniel Brennan, MD is a nephrology doctor who practices in Saint Louis, MO. He is 58 years old and has been practicing for 32 years. Dr. Brennan is affiliated with Barnes-Jewish St. Peters Hospital, Ste Genevieve County Memorial Hospital, Anderson Hospital, Marshall Browning Hospital, St. Luke's Hospital, Madison Medical Center, Barnes-Jewish West County Hospital, Jersey Community Hospital, Barnes Jewish Hospital, HSHS St. Elizabeth's Hospital, Mercy Hospital Jefferson, Saint Alexius Hospital, SSM Health DePaul Hospital, Illini Community Hospital, SSM Health St. Joseph Hospital - St. Charles, SSM Health St. Clare Hospital, Memorial Hospital Belleville, Community Memorial Hospital, Perry County Memorial Hospital, Alton Memorial Hospital, Christian Hospital, Osf Saint Anthony's Health Center, Pinckneyville Community Hospital, HSHS St. Joseph's Hospital Breese, Parkland Health Center - Bonne Terre, Mercy Hospital St. Louis, Washington County Hospital and Medical Group, Missouri Baptist Medical Center, SSM Saint Mary's Hospital, Progress West Hospital, SSM Health St. Mary's Hospital - Centralia, HSHS Holy Family Hospital, St. Anthony's Medical Center, Parkland Health Center - Liberty Road, Mercy Hospital Washington and Mercy Hospital Lincoln.
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Learn about Dr. Brennan
Dr. Brennan's Experience
Dr. Brennan's experience matches your search based on the following criteria:
Based on total number of patients treated over the last 12 months
Specializes in Nephrology
Board certified in Internal Medicine and Nephrology
No sanctions found
No board actions found
Accredited by: American Board of Internal Medicine*
Accredited by: American Board of Internal Medicine*
Why It Matters: Dr. Brennan's Board Certifications
Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the United States.
Board certification indicates that a doctor is highly qualified in the medical field in which he or she practices. A board-certified doctor is more likely than a non-board-certified doctor to have the most current skills and knowledge about how to treat your medical condition.
Acute Kidney Failure
Adrenal Gland Cancer
Anal and Rectal Cancer
Calcium Metabolism Disorders
Cholecystitis and Gallstones
Chronic Kidney Diseases
Congenital Cystic Kidney Disease
Congenital Polycystic Kidney Disease
Congenital Renal Agenesis and Dysgenesis
Diabetes Insipidus, Nephrogenic
Diabetes With Renal Manifestations
End-Stage Renal Disease
Gallbladder and Biliary Tract Cancer
Graft vs Host Disease
Hepatitis B - Immune Response
Hungry Bone Syndrome
Hypertensive Chronic Kidney Disease
Hypertensive Heart and Chronic Kidney Disease
Hypotension (Excluding Maternal)
Inflammatory Bowel Disease
Iron Metabolism Disorders
Kidney Infection, Acute
Limb Swelling Caused by Fluid Overload
Magnesium Metabolism Disorders
Mineral Metabolism Disorders
Moles (Benign Skin Lesions)
Nephritis and Nephropathy
Parathyroid (Gland) Disease
Partial Lung Collapse
Peripheral Vascular Disease (PAD, PVD)
Phlebitis and Thrombophlebitis
Phosphorus Metabolism Disorders
Renal Artery Arteriosclerotic Disease
Secondary Renovascular Hypertension
Stomach and Small Intestine Cancer
Vitamin D Deficiency
Dressing and-or Debridement of Wound, Infection, or Burn (incl. Negative Pressure Wound Therapy)
Excision of Skin Lesion
Malpractice Claims not available
Healthgrades does not collect malpractice information for Missouri.
What is medical malpractice?
Medical malpractice is issued when negligence by a doctor causes injury to a patient. For example, a doctor may improperly diagnose, treat or medicate outside the standard of medical care. The three types of malpractice are: a settlement, an arbitration award, or a judgment.
If my doctor has malpractice history, does that mean he or she is a poor-quality doctor?
If your doctor has a malpractice claim, evaluate the information and determine if the action could potentially impact the quality of care you receive. Claim settlements and arbitration awards may occur for a variety of reasons, which should not necessarily reflect negatively on the doctor's professional competence or conduct. You may want to use this information to start a discussion with the doctor about his or her history and specific ability to provide healthcare for you.
How far back does Healthgrades malpractice history go?
Healthgrades reports details of a doctor’s malpractice history when the doctor has at least one closed medical malpractice claim within the last five years, even if he or she no longer practices in that state.
For which states does Healthgrades collect malpractice history?
Healthgrades collects malpractice information from California, Colorado, Connecticut, Florida, Georgia, Illinois, Massachusetts, Nevada, New Jersey, New York, North Carolina, Oregon, Tennessee, Texas, Vermont, Virginia, and West Virginia. If your doctor has a malpractice claim, evaluate the information and determine if the action could potentially impact your quality of care. Sometimes multiple states report the same claim. If a provider practices in a state where data is unavailable, please reach out to your local state legislature to help make this data publicly available.
No sanctions history found for the years that Healthgrades collects data.
What is a sanction or disciplinary action?
A sanction, also known as a disciplinary action, is an action taken to punish or restrict a doctor who has demonstrated professional misconduct. Sanctions may be imposed by a state medical board, professional medical licensing organization, or the U.S. Department of Health and Human Services.
If my doctor has sanction history, does that mean he or she is a poor-quality doctor?
If a doctor has a sanction, it does not necessarily mean that he or she is a poor-quality doctor. Some sanctions are not related to medical care, and involve a doctor’s finances or administrative activities. Before you make any choices about changing your doctor, we recommend that you evaluate the doctor’s sanction information and determine how severe or relevant you think the sanction cause and action were.
How far back does Healthgrades sanction history go?
Healthgrades reports state and federal sanctions from the previous five years, except when a doctor's license has been revoked or surrendered. Healthgrades displays all actions for doctors whose licenses have been revoked or surrendered.
For which states does Healthgrades collect sanction history?
Healthgrades collects sanction history from all 50 U.S. states. Physicians with a disciplinary action in one state may move to another state where they have a clean record. Since Healthgrades painstakingly compiles disciplinary action information from all 50 states, Healthgrades website will show if a physician has a disciplinary action in more than one state.
0 Board Actions
No board actions found for the years that Healthgrades collects data.
What are board actions?
Board actions are non-disciplinary actions imposed upon a doctor based on a complaint investigation. A patient or medical colleague may file a complaint with that state medical board or professional licensing organization, which then investigates the complaint. Board actions are intended to ensure that a doctor is able to perform safe medical and health care tasks.
Types of non-disciplinary actions include an advisory letter, a corrective action agreement, a limitation or restriction on the medical or healthcare tasks a doctor can perform, or a voluntary agreement by the doctor not to practice. A board action can also include a termination of a corrective action agreement or voluntary agreement, which allows the doctor to return to full practice.
If my doctor has a board action, does that mean he or she is a poor-quality doctor?
If a doctor has a board action, it means he or she has had a non-disciplinary action imposed upon him or her. It does not necessarily mean that he or she is a poor quality doctor. Before you make any choices about changing your doctor, evaluate the doctor's board action information and determine how severe or relevant you think the cause and action were.
How far back does Healthgrades non-disciplinary board action history go?
Healthgrades reports non-disciplinary board action history from for the previous five years, except when a doctor's license has been revoked or surrendered. Healthgrades displays all actions for doctors whose licenses have been revoked or surrendered.
For which states does Healthgrades collect non-disciplinary board actions?
Healthgrades collects non-disciplinary board actions from all 50 U.S. states.
Roy J Lucille a Carver College Of Medicine At University Of Iowa
Medical School | Graduated 1985
University Ia Hosps
Internship Hospital | Completed
University Ia Hosps
Residency Hospital | Completed 1988
Brigham Womens Hospital
Fellowship Hospital | Completed 1992
Awards & Recognition
Awards & Honors
Healthgrades Honor Roll
Media & Publications
Dr. Brennan has no media or publications listed.
Awards & Recognition
What is a recognized doctor?
Healthgrades Recognized Doctor designation identifies leading doctors who:
Are board certified.
Have not had their license surrendered or revoked since Healthgrades started collecting data in 2000.
Have no malpractice judgments, adverse arbitration awards, or monetary settlements for the last five years in the states in which Healthgrades can collect malpractice data.
Are free of state or federal disciplinary actions (sanctions) for the last five years.
Healthgrades updates the Recognized Doctor list quarterly based on board certification data. Healthgrades also receives sanction and malpractice data throughout the year, depending on how frequently the state medical boards release updates.
We remove a newly sanctioned doctor from the Recognized Doctor list as soon as we receive the information. However, it is important to note that malpractice information is publically available in only 14 states.
Memberships & Professional Affiliations
Dr. Brennan does not have any memberships or affiliations listed. If you are Dr. Brennan and would like to add memberships or affiliations, please update your profile.