2019 Fellows

First Year

Ryan Paulk, MD

Medical School: University of Mississippi Medical Center, Jackson, MS

Residency: Greenville Health System, SC Medicine/Pediatrics Residency

Fun Fact: I’m from small town Mississippi. I have a sweet family with kids. I did my initial training in pharmacy prior to medical school. I attended UMC in Jackson MS. Went to SC for residency. After fellowship, I will join Apex Allergy in Greenville, SC. I like to hunt, particularly duck hunt.

Zachary Rubin, MD

Medical School: Case Western Reserve University, Cleveland, OH

Residency: University of Illinois College of Medicine in Chicago, General Pediatrics

Fun Fact: I’m from a suburb of Chicago. I am married and have a child on the way. After fellowship, I will join Oak Brook Allergists in the western suburbs of Chicago. I am a musician and I can hula hoop.

Jeff Kepes, MD

Medical School: Wayne State University School of Medicine

Residency: University of Alabama at Birmingham, Birmingham, AL, Internal Medicine


Second Year

Champ Kanchongkittiphon, MD, PhD

Medical School: Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand

Residency: Children’s Hospital of Michigan, Wayne State University, General Pediatrics

Fun Fact: Eating is my hobby.

Christopher Rigell, MD

Medical School: University of Alabama School of Medicine

Residency: Washington University School of Medicine/Barnes-Jewish Hospital, Internal Medicine

Hobby: Running

Ofer Zimmerman, MD

Medical school: Sackler School of Medicine, Tel Aviv University, Israel

Residency: Tel Aviv Sourasky Medical Center, Tel Aviv, Israel, Internal Medicine

Fellowship: Tel Aviv Sourasky Medical Center, Tel Aviv, Israel,  Infectious Diseases

Research Fellowship: Laboratory of Clinical Infectious Diseases, NIAID, NIH

Hobby: Pipetting


Abeer Algrafi, MBBS

Medical School: Taibah University – Madinah, Saudi Arabia

Residency: NewYork-Presbyterian Brooklyn Methodist Hospital/Weill Cornell Medicine – Brooklyn, NY, Internal Medicine

Third Year

Zhen Ren, MD, PhD

Medical school: Medical College of Tongji University China

Pharmacology: School of Medicine, Shanghai Jiao Tong University Shanghai, China

PhD: The Graduate Center of the City University of New York, New York, USA

Residency: Albert Einstein College of Medicine/Jacobi, Bronx, NY, Internal Medicine

Fun Fact: I enjoy painting and traveling.