Contact Us: 734-712-3456

Residents of the General Surgery Program are as follows:

Farwa Batool, M.D.
Michael Brozik, M.D.
Myungwon Chang, M.D.
Dennis Choi, M.D.
Benjamin Davies, M.D.
John Donkersloot, M.D.
Daniel Felling, M.D.
Miles Jackson, M.D.
Theodore John, M.D.
Shepard Peir Johnson, M.D.
Crystal Kavanagh, M.D.
Rhami Khorfan, M.D.
Edward Kreimier, III, M.D.
Keith Langlois, M.D.

Melani Lighter, M.D.
Talya Lorenz, M.D.
Laura Lozier, M.D.
Marko Martinovski, M.D.
Abby Navratil, M.D.
Sylvester Paulasir, M.D.
Luke Pesonen, M.D.
Katie Petrin, M.D.
Benjamin Roose, M.D.
Olabisi Sheppard, M.D.
Kristen Spoor, M.D.
Aela Vely, M.D.
Alan Vorst, M.D.
Abdullah Wafa, M.D.
Jeffrey Walker, M.D.

Farwa Batool, M.D.  - Farwa was born and raised in Quetta, Pakistan. After finishing high school, she immigrated to Waterloo, Canada with her family. She continued her studies in Canada where she received a B.S in Biomedical Science from University of Waterloo, a M.S in Biomedical Science from University of Guelph with a brief detour to conduct research at Lund University, Sweden. She moved to Michigan to obtain her M.D from Wayne State School of Medicine. In her free time, Farwa enjoys travelling, reading, and spending time with family and friends. She is still undecided about her professional future but looks forward to her career as a general surgeon. FarwaBatool.jpg
Michael Brozik, M.D. - Michael was born and raised in Madison, SD, a small town of just over six thousand people. He graduated from South Dakota State University in 2007 with a B.S. in Biology. After graduation, he attended medical school at the Sanford School of Medicine at the University of South Dakota, where he graduated in 2011. In his free time, he enjoys golfing, watching movies, spending time with friends, brewing beer, and trying new foods with his longtime girlfriend Elise.  
Myungwon Chang, M.D. - Myungwon grew up in Ann Arbor, MI. She attended the University of Michigan where she completed her B.S. in Cellular Molecular Biology and Masters in Public Health degrees. She then went on to earn her M.D. from Wayne State University. In her spare time, Myungwon enjoys spending time with her husband and running half marathons with her family. If you can't find her at the hospital she'll probably be at the local figure skating rink or enjoying delicious Korean food at her dad's restaurant.

Dennis Choi, M.D. - Dennis grew up in New York City, in Queens, and then moved to Flint, Michigan to attend Kettering University where I received a BS in Mechanical Engineering. I then worked for GM in Saginaw, Michigan as a production quality control engineer for a couple of years, then deciding to switch careers to medicine. I returned to New York City to complete my post-baccalaureate studies, applied to medical school, and got married. I was then accepted to Wayne State University SOM in Detroit, where I moved with my wife, celebrated the birth of our two children, and completed my medical education. My spare time is dedicated to spending time with my family. I also enjoy going on trips (our honeymoon was an 11,000 mile road trip across the US), camping, cooking, watching good movies/TV shows, and enjoying good food.

Dr. Choi
Benjamin Davies, M.D. - Ben was born and raised in Rochester, MN. After receiving his B.S. Degree from the University of Minnesota, he moved to Boston, MA, where he continued his studies and conducted two years of Basic Science Research in Cardiology at Harvard University. Following this brief stint in the Northeast, Ben returned to the Midwest to attend Wayne State University School of Medicine, in Detroit, MI. During his second year as a medical student, he was commissioned in the United States Air Force, where he will work as a surgeon following the completion of his residency. In his spare time, Ben visits family and friends in Minnesota and Chicago. He enjoys camping, hiking and a wide variety of outdoor activities. A devoted supporter of the Minnesota Vikings, Twins and ‘all-things’ Gophers, Ben both watches and participates in sports as often as possible. He is a proud team member at St. Joseph Mercy Hospital and looks forward to pursuing his career in General Surgery. DaviesBenjamin.JPG
John Donkersloot, M.D. - John Donkersloot was born and raised in Zeeland, MI. For undergraduate he went to Hope College where he majored in Biochemistry/Molecular Biology and enjoyed playing the piano, participating on the track team, and working in a research lab. For medical school he went to the University of Michigan. When he is not at the hospital he enjoys playing the piano, playing specialty board games, sailing, reading, and having friends over for dinner. After residency he is hoping to serve overseas as a general surgeon. John Donkersloot, M.D.
Daniel Felling, M.D. – Hometown is Belgrade, MN. Graduated from Minnesota State University, Mankato with a BS in Human Biology and a BA in Spanish. Obtained a M.S. at A.T. Still University in Kirksville, MO. Graduated medical school from the University of Minnesota. I'm married with 3 children, and enjoy spending as much time as possible with them. We enjoy all sorts of outdoor sports and activities, professional sports, and movies. Unsure where we want to end up after finishing residency, keeping all options open. FellingDaniel.JPG
Miles Jackson, M.D. Miles was born in Oakville, Ontario, Canada. His educational path lead him to Queen's University, Canada where he completed a Bachelor's degree with a major in Biology with a focus on evolutionary genetics and a minor in Economics. Blessed with family abroad, he pursued his medical studies at University College Cork, Ireland and graduated in 2015. His desire to pursue a General Surgery residency in the United States was cemented by formative clinical electives during his medical education. An avid live music lover, Miles enjoys attending festivals and concerts, DIY projects, and adventurous vacations in North America and Europe. Miles Jackson, M.D.
Theodore John, M.D. Ted was born and raised in sunny southern California. He moved to Houston, Texas to attend Rice University, where he received a Bachelor of Science in Bioengineering. During college, Ted developed an interest in international service by spending each of his summers in Kenya and educating youth there about HIV/AIDS. Upon graduating, Ted spent a year in Darfur, Sudan to work for a medical relief organization that provides assistance to communities affected by the ongoing civil war. He then went on to attend the University of Michigan Medical School and received his MD in 2011. In the future, Ted hopes to work in underserved communities and start a hospital overseas one day. Outside of the hospital, Ted enjoys running, playing the guitar, and traveling.
Shepard Peir Johnson, M.D. – Peir was born and raised in Champaign, IL. He comes from a family of competitive swimmers and he continued that trend when he became a student-athlete at Northwestern University. He there received a BS in Biomedical Engineering, a major that demands critical thinking and innovative design much like the field of surgery. With a desire to travel he chose to study abroad and obtain his medical degree at the University of Queensland in Brisbane, Australia. His passions include spending time with his family and athletics, particularly tennis and basketball. His family is excited to return to the Midwest, but Australia will always be the home of his firstborn. Other areas of interest include camping, hiking and travel.  JohnsonPeir.jpg
Crystal Kavanagh, M.D. Crystal was born in Sudbury, Ontario Canada and later located to Toronto, Ontario where she earned a B.Sc. in Biology at York University. She spent several years in the city working in the financial sector before beginning medical school at Saba University School of Medicine in the Netherlands Antilles and completing the bulk of her clinical rotations in Brooklyn, NY. Prior to joining St. Joseph's Crystal completed a year of training with the department of surgery at the Mayo Clinic. In her free time she enjoys travel, international cuisine, and spending time with family and friends.
Rhami Khorfan, M.D. RhamiKhorfan.jpg
Edward Kreimier, M.D. - Eddie was born and raised in the small Western Colorado town of Rifle. He attended the University of Notre Dame where he earned his BS in Biological Sciences with a minor in Science, Technology, and Values. While at Notre Dame, Eddie lived in Keough Hall. He then received his MD from Michigan State University College of Human Medicine. While at CHM, he was part of the Rural Physician Program and completed his clinical rotations at Marquette General Hospital and around the Upper Peninsula. Eddie enjoys seafood, hunting and fishing, and Notre Dame Football. KreimierEdward.jpg
Keith Langlois, M.D. – Keith was born and raised in Sydney, Nova Scotia, which is located on picturesque Cape Breton Island on Canada’s east coast.  He attended Cape Breton University and earned a Bachelor of Science degree majoring in Biology.  From here he attended St. Francis Xavier University, completing a Bachelor of Science degree majoring in Nursing.  He worked for several years as a registered nurse in the areas of orthopedic surgery, thoracic surgery and finally within the cardiovascular surgery intensive care unit.  Although he thoroughly enjoyed his career as a registered nurse, the call to medicine was too strong.  He decided to attend Saba University School of Medicine, Netherlands Antilles, earning his Doctor of Medicine degree.  In his spare time Keith enjoys spending time with his wife, family and friends, watching/playing hockey and baseball, traveling and playing guitar.  In the future, Keith intends on returning home to practice as a general surgeon. KeithLanglois.jpg
Melanie Lighter, M.D. – Melani was born and raised in Montreal, Quebec, Canada. She attended McGill University where she received her BSc in Anatomy and Cell Biology and MSc in Surgical research. Melani then left Montreal to pursue her medical degree at St. Georges University School of Medicine where she lived in the UK, Grenada and NY. When not at the hospital Melani enjoys traveling, being active and spending time with friends and family. Although she wants to explore all aspects of general surgery, she is currently interested in pursuing a fellowship in vascular surgery. MelanieLighter.jpg
Talya Lorenz, M.D. – Talya was raised in Billings, Montana. She attended Carroll College - in Helena, Montana - where she played soccer and graduated in 2009 with a degree in Biology/Chemistry. She then earned her M.D. from the University of Washington in 2013. In her spare time Talya enjoys eating, traveling with her family, running half marathons, and escaping to the mountains with her dog. She hopes to return to Montana and pursue a General Surgery practice. LorenzTalya.jpg

Laura Lozier, M.D. - Laura was born and raised in Baraga, a small town in Michigan's Upper Peninsula.  She graduated from Baraga High School in 2000, and continued on to the University of Michigan, where she earned her B.S. in General Biology in 2004.  Laura obtained an Associate Degree in Nursing from Bay de Noc Community College in 2007, and then worked as an RN in the ICU at Marquette General Hospital for three years.  Following a surgical mission trip to Haiti in January 2010, Laura was accepted to medical school.  She attended Michigan State University College of Human Medicine, and was part of the Rural Physician Program in Marquette, MI.  In her free time, Laura enjoys being outside, particularly going for a hike or relaxing at the beach.  She also likes to spend time with family and friends, cook healthy meals,


Marko Martinovski, M.D. - Marko grew up in Dearborn Heights, MI. He received his Bachelor of Science in Cellular & Molecular Biology from the University of Michigan in Ann Arbor. He then went on to earn his M.D. from Michigan State University - College of Human Medicine. Outside of medicine, Marko's interests include golf, tennis, snowboarding, (sports in general), cooking, wine, traveling and spending time with family and friends.

Abby Navratil, M.D. Abby grew up in Bellevue, Washington. After earning her B.S. in bioengineering from the University of Washington, she went on to complete her MD at the University of Washington in 2011. In her free time, Abby enjoys reading, biking, swimming, and spending time with family and friends. She hopes to return to the Seattle area to practice as a general surgeon.

Sylvester Paulasir, M.D. - Sylvester was born in India and moved to United States with his family as a teenager. He pursued his undergraduate degree in Theology at Washington Adventist University. During the summer of his sophomore year in college he went on a mission trip to Nicaragua where he got the opportunity to volunteer at a village clinic. Touched by the need for medical attention in underserved parts of the world, he decided to become a doctor. He obtained his medical degree from Loma Linda University in California and hopes to practice as a medical missionary after residency. During his leisure time, he likes to spend time with his wife, read novels and philosophy, fly small planes and run.

Luke Pesonen, M.D. – Luke grew up in Plymouth, MN.  He graduated from Gustavus Adolphus College with a BA in History.  He went to Albany, NY for medical school and graduated from Albany Medical College in May of 2014.  Outside of work and studying he enjoys spending time with his wife, Lindsay.  He also looks forward to visits from family and friends.  Hobbies include exploring new places, hiking, golf, fishing, and playing the violin.  He also likes designing and making small woodworking projects such as plant stands, bookshelves, and creating cigar box guitars. He is grateful for the opportunity to be a general surgery resident at St. Joseph Mercy Hospital and is excited to become a surgeon.


Katie Petrin, M.D. – Katie grew up in Ellensburg, Washington.  After earning her B.S. in biochemistry/biophysics from Washington State University, she went on to obtain her MD at the University of Washington in 2012.   Katie and her husband, Alex are excited to be in Ann Arbor where they can spend their free time doing the outdoor activities they love – waterskiing, snowboarding, biking, rock climbing, backpacking, and anything to make their Chocolate Labrador tired.  Katie is looking forward to her career in general surgery, and at some time after residency hopes to work in a rural-based practice back in Washington State.

Benjamin Roose, M.D. – Ben grew up in Tustin, MI, a small town near the Manistee National Forest. He was home-schooled and majored in Biology at Cedarville University. Staying in Ohio, he earned his medical doctorate from The Ohio State University. He is excited to return to Michigan and be closer to family. Ben enjoys being outside and spending time with his brothers. He is looking forward to training in general surgery and is open to what the future may hold.

Olabisi Sheppard, M.D. – Olabisi Sheppard was born to Mr. and Mrs. Ibitayo Lashore in the city of Lagos, Nigeria. She attended boarding school from age 10-16 and completed her Junior/Senior secondary school. She spent the next two years learning culinary arts in her mother’s kitchen. After going on to get her B.S. in Biochemistry at Northern Michigan University in Upper Peninsula of Michigan, she received her M.D. at the University of Minnesota-Twin Cities in Minneapolis, MN. She and her husband Matthew enjoy international food and travel, and they are both eager to become involved with the Ann Arbor-Ypsilanti community. Other interest includes making and eating good food, creating and listening to music, watching Doctor Who etc. SheppardOlabisi.jpg
Kristen Spoor, M.D. – Kristen Spoor is originally from Michigan. She attended Johns Hopkins University and graduated with a bachelor's degree in art history. She spent the following three years in New York City, working in orthopedics and completing a pre-medical post-baccalaureate program. She returned to Michigan to attend Michigan State University's College of Human Medicine, where she graduated in 2012. She enjoys being outdoors, biking and spending time with her family and friends. Dr. Kristen Spoor

Aela Vely, M.D. – Aela was born and raised in France where she developed a passion for medicine and traveling. She went to Undergrad at Hawaii Pacific University and Medical School at Saba University School of Medicine. She visited and lived in many countries but is looking forward to make a home in Michigan for the time being. On her free time she likes to watch movies, running, watching sports (especially football – the European one) and would like to start riding horses again. For her professional future, she believes she would enjoy trauma surgery but remains open to any and all options.

Alan Vorst, M.D. – Alan grew up in Springfield, OH and continued his education there at Wittenberg University as a Chemistry major. After graduating in 2006, he volunteered in Al Mafraq, Jordan at Annoor tuberculosis sanatorium, which led to a desire to be involved in medical missions. He then went to the University of Louisville for medical school and fell in love with surgery during freshman year anatomy. Hobbies include international travel, surfing, and triathlon racing. VorstAlan.jpg
Abdullah Wafa, M.D. – Abdullah was born and raised in Evansville, IN, later moving to Wisconsin and then to Michigan.  Knowing early on he wanted to pursue medical school, he earned his Bachelor of Business Administration from Saginaw Valley State University.  Following graduation, Abdullah spent one year in Jordan as part of the Fulbright Program researching the health care system of Palestinian refugee camps.  Upon his return, he earned his M.D. degree from the Michigan State University College of Human Medicine.   While not in the hospital, Abdullah enjoys soccer, bicycling, working on his project car (a 1986 BMW 325), spending time with family and friends, traveling, and playing the piano. AbdullaWafa.jpg
Jeff Walker, M.D. - Jeff was born and raised in Boise, ID.  He attended college at the University of Utah where he graduated magna cum laude with a degree in Biomedical Engineering and a minor in Chemistry.  As an undergraduate his research focused on computer aided drug discovery for novel cancer therapeutics.  Despite his love of benchtop research, Jeff decided to pursue a career in medicine and was subsequently accepted into the University of Washington School of Medicine.  During medical school, Jeff was involved in research yet again, this time studying breast cancer oncoproteins.  He graduated in 2011 and relocated with his family to Michigan to attend residency here at St. Joseph.  When Jeff isn't at the hospital, he enjoys spending time with his wife and five children.  They enjoy taking the kids to many of the beautiful parks in the area and spending time with extended family and friends.  Among his personal hobbies, Jeff takes great interest in national politics, history, art, movies, and soccer.  He hopes to eventually move back west with his family once he completes his training.