Our Providers

Our providers are experts in internal medicine who focus on the prevention, diagnosis and treatment of adult diseases. As Washington University Physicians, we are part of the Washington University academic medicine team. This means, when needed, our patients have access to nationally-ranked specialists, state-of-the-art facilities and the latest applications of clinical research.

Katharine L. Cella, FNP

Katharine L. Cella, FNP

Master’s Degree: Master of Science, Nursing: Vanderbilt University School of Nursing
Clinical Interests: Internal medicine, primary care of adults including chronic disease and acute illness management; diabetes, hypertension and hyperlipidemia management

Sarah Hartmann, AGNP-C

Sarah Hartmann, AGNP-C

Master’s Degree: Master of Science, Nursing: University of Missouri, St Louis, MO

Clinical Interests: General primary care, preventative medicine, chronic disease management

Mackenzie Hofford, MD

Mackenzie Hofford, MD

Medical Degree: University of Rochester
Residency: Maine Medical Center
Clinical Interests: Preventive medicine, chronic disease management

Peter McDonnell, MD

Peter McDonnell, MD

Medical Degree: University of Michigan
Residency: Washington University School of Medicine, St. Louis, MO
Clinical Interests: Primary care and internal medicine for men and women including management of diabetes, heart conditions, and other chronic diseases

Chelsea E. Pearson, MD

Chelsea E. Pearson, MD

Medical Degree: Washington University School of Medicine, St. Louis, MO
Residency: Barnes-Jewish Hospital, St. Louis, MO
Clinical Interests: Internal medicine, preventive medicine, obesity medicine

Jennifer Schmidt, MD

Jennifer Schmidt, MD

Medical Degree: Saint Louis University School of Medicine 
Residency: Medical College of Wisconsin
Clinical Interests: Preventive medicine, chronic disease management

Scott Starenchak, MD

Scott Starenchak, MD

Medical Degree: University of Pittsburgh School of Medicine
Residency: Latrobe Area Hospital
Clinical Interests: Continuity of care, health maintenance, and disease prevention

Heidi Tastet, MD

Heidi Tastet, MD

Medical Degree: Loma Linda School of Medicine
Residency: Florida Hospital
Clinical Interests: Lifestyle medicine, global public health and chronic diseases

Elizabeth Walden-Prater, NP-C

Elizabeth Walden-Prater, NP-C

Master’s Degree: Master of Science, Nursing, Saint Louis University
Clinical Interests: Preventative medicine, acute illness, chronic condition management, hypertension, diabetes, anxiety, and depression

Megan Wren, MD

Megan Wren, MD

Medical Degree: Washington University School of Medicine, St. Louis, MO
Residency:  The Jewish Hospital of St. Louis at Washington University
Clinical Interests: Preventive medicine, chronic disease management