Mark V. Williams, MD, FACP, MHM

Mark V. Williams, MD, FACP, MHM

Division Chief, Professor of Medicine

Mark V. Williams, MD, FACP, MHM began his collaboration with the Division’s experienced leadership team in October 2021 to build one of the premier academic divisions in the nation. A Past-President of the Society of Hospital Medicine, Founding Editor of the Journal of Hospital Medicine and one of the first 10 Masters in Hospital Medicine, Mark brings his expertise in quality improvement, teamwork, and care transitions to this prestigious institution and talented group.

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Natalia Brito-Rivera, MD

Natalia Brito-Rivera, MD

Instructor in Medicine

Natalia Brito Rivera, MD, MPHS, is an Instructor in Medicine in the Division of Hospital Medicine. She works as a hospitalist primarily on the internal medicine service and medical oncology service providing direct patient care and teaching medical students and residents in a clinical setting. She has an interest in medical education and student mentoring and aids in the recruitment of internal medicine candidates as an interviewer. She serves in the Medical Education Committee and the Inclusion, Diversity, Equity, Allyship and Social Justice (IDEAS) Committee.

Cynthia Brown, NP

Cynthia Brown, NP

Nurse Practitioner

Cynthia Brown DNP, FNP-BC, is a Nurse Practitioner with the Division of Hospital Medicine at Washington University St. Louis School of Medicine. She works primarily at The Rehabilitation Institute of St. Louis (TRISL) providing Internal Medicine consults for the Washington University St. Louis Physical Medicine & Rehabilitation teams with goals of improving medical care, preventing errors, addressing acute medical issues and preventing Acute Care Transfers.

Monique Bruinsma, MD

Monique Bruinsma, MD

Assistant Professor of Medicine

Monique Bruinsma, MD, is an Assistant Professor of Medicine in the Division of Hospital Medicine.  She received her medical degree, masters in immunology, and residency training at Washington University/BJH.  In her clinical endeavors, she cares for acutely ill hospitalized medicine patients.   She has an interest in using information technology to improve the efficiency and safety of patient care.  She also fosters the development of physician trainees by providing didactic teaching as well as attending frequently on the general medicine teaching service.

Melissa  Bunfill, NP

Melissa Bunfill, NP

Nurse Practitioner

C.J. Butler, PA-C, ATC

C.J. Butler, PA-C, ATC

Physician Assistant

C.J. Butler, PA-C, ATC is a Physician Assistant within the Division of Hospital Medicine at Washington University. C.J. began his career as a high school athletic trainer working with the athletes of Collinsville High School for three years after receiving his Master of Athletic Training from Saint Louis University. Ultimately, C.J. went back to SLU and received his Physician Assistant, Master of Medical Science degree in 2023. C.J. is committed to providing comprehensive patient-centered care and developing plans specific for each individual person.

Dennis Chang, MD

Dennis Chang, MD

Associate Professor of Medicine

Dennis Chang, MD, is an Associate Professor in the Division of Hospital Medicine and the Interprofessional Education (IPE) MD Thread Director, and Co-Director of the Inpatient Clinical Immersion at Washington University in St. Louis. He was previously affiliated with the Icahn School of Medicine at Mount Sinai in New York City where he served as the 3rd year Medicine Clerkship Director and the Director of Education and Faculty Development for the Division of Hospital Medicine.

He received his BS from Yale University, his MD from the University of Chicago Pritzker School of Medicine and completed his Internal Medicine residency at NYU.

Miguel Chavez Concha, MD, MSC

Miguel Chavez Concha, MD, MSC

Instructor in Medicine

Miguel A. Chavez Concha, MD, is an Instructor in Medicine in the Division of Hospital Medicine and works primarily on the bone marrow transplant service as a hospitalist. He is trained in Infectious Diseases and has an interest in infections in immunocompromised patients and antimicrobial stewardship. He has implemented guidelines for antimicrobial and diagnostic stewardship within the bone marrow transplant services. Dr. Chavez has contributed to multiple clinical research publications within the realm of infectious diseases. He participates with the Hospital Epidemiology and Infection Prevention Committee as well as the Antimicrobial Stewardship Program from Barnes Jewish Hospital. He also has an interest in medical education and is the educational coordinator for the infectious diseases’ curriculum of the internal medicine residency program.

Justin Chen, MD

Justin Chen, MD

Instructor in Medicine

Justin Chen, MD MHPE, is an Instructor in Medicine in the Division of Hospital Medicine with a special interest in qualitative methods and dissemination and implementation research to increase equitable implementation and uptake of evidence-based clinical practice guidelines. Previously as the Chief Resident in Quality and Safety and medical education fellow at Washington University School of Medicine, he has led many projects that includes redesigning the patient safety and quality improvement rotation for the WUSM IM residency program and implementing the electronic handoff tool currently used at the John Cochran VA. His current scholarly interest is designing and implementing a polypill, or fixed-dose combination pill, for heart failure reduced ejection fraction that has been proposed to transform the heart failure treatment paradigm.

Jeffrey Choi, MD, MS

Jeffrey Choi, MD, MS

Instructor in Medicine

Jeffrey Choi, MD, is an Instructor in Medicine in the Division of Hospital Medicine. He received his medical degree and completed his internal medicine residency training at Washington University in St. Louis/Barnes-Jewish Hospital. He is interested in general inpatient care with a focus on safe transitional care and health literacy and provides direct clinical care in various settings including general day and night hospitalist medicine, oncology, and BMT. He enjoys working with medical student and resident trainees in his clinical practice and plans to become more involved in general medical education within the department. He is also interested in clinical operations and serves on the patient care operations committee.

Kelsey Chow, MD

Kelsey Chow, MD

Assistant Professor of Medicine

Kelsey Chow, MD, is an Assistant Professor of Medicine in the Division of Hospital Medicine. She has been a member of the Orientation Committee for the past two years to help design orientation materials and presentations to help incoming hospitalists become familiar with the Division of Hospital Medicine and Wash U. She also has an interest in reducing hospital readmissions, and has contributed to decreasing hospitalizations during her time as a hospitalist at Rush by writing action plans for patients frequently admitted to the hospital. She is also currently on the Readmission Committee at BJH. She also enjoys teaching both medical students and residents while on the Hospitalist service as well as Firm service at BJH.

Jaspur Coleman, MD

Jaspur Coleman, MD

Instructor in Medicine

Jaspur Min Coleman, MD, is an Instructor of Medicine in the Division of Hospital Medicine. She received her medical degree from Washington University in St. Louis and completed her internal medicine residency at Barnes-Jewish Hospital. She cares for patients on the clinical hospitalist services at Barnes-Jewish Hospital, Barnes-Jewish West County Hospital, and The Rehabilitation Institute of St. Louis.  She also enjoys attending on the medicine teaching service.  Dr. Coleman has an interest in resident and medical student education, and she assists in recruitment of internal medicine residency candidates as an interviewer. She serves on the recruitment and physician wellness committees for DHM.

Stephanie Conner, MD, FACP, FHM

Stephanie Conner, MD, FACP, FHM

Associate Professor of Medicine

Stephanie Conner, MD, FACP, FHM, is an Associate Professor of Medicine and the Director of POCUS for the Division of Hospital Medicine, as well as the Medical Director for the Inpatient Medicine Teaching Service (Firm 2). She has an interest in point-of-care ultrasound (POCUS), medical education, clinical operations, and quality improvement. She attends frequently on the inpatient medicine teaching service and bedside procedure service, and cares for patients directly on the hospitalist service. Dr. Conner is involved in both regional and national POCUS education and CME conferences and serves on the Executive Council of the Society of Hospital Medicine POCUS Special Interest Group. She is the recipient of a grant from the Barnes Jewish Hospital Foundation for the development and implementation of a POCUS curriculum for hospitalist faculty. She has published several articles on developing POCUS curricula and inpatient medical education in recent years.

John Cras, MD, MS

John Cras, MD, MS

Assistant Professor of Medicine

Anthony Dao, MD

Anthony Dao, MD

Assistant Professor of Medicine

Tony Dao, MD, is an Assistant Professor of Medicine.  He is from Dayton, OH and completed medical school at Northeast Ohio Medical University (NEOMED) in Rootstown, OH.  He is passionate about diversity, equity, and inclusion initiatives and graduate medical education.  He directs OUTmed, an organization for LGBTQIA+ trainees, faculty and staff, and he is an associate program director for the IM Residency Program.  Clinically, he attends on the inpatient teaching services and direct care services.  His favorite part of the job is getting the opportunity to work with the internal medicine residents.

Lakshman Darsi, MD

Lakshman Darsi, MD

Assistant Professor of Medicine