Breadcrumb Home About Us Our Staff Our Staff Healthcare Providers Research areas Samantha Bemrich, PA-C Title/Position Physician Assistant Rebecca Chackalackal, MD Title/Position Medical Director Keith Guess, PA-C Title/Position Physician Assistant Jennifer Johnson, MD, PhD Title/Position Physician Erin Martin, DO Title/Position Psychiatrist Mayumi Oakland, PA-C Title/Position Physician Assistant Heidi Ruhland, PA-C Title/Position Physician Assistant Marina Usacheva, MD Title/Position Physician Kathleen Wittich, MD Title/Position Physician Caroline Woods, PA-C Title/Position Physician Assistant Thomas Woodward, MD Title/Position Physician
