Health Services Staff

Bates Health Services is an established relationship with Central Maine Medical Center to provide expertise and care for students. The Health Services staff includes CMMC Family Medicine Residency Clinic medical providers, 3rd year medical residents, registered nurses, a medical assistant, a patient service representative, and Bates support staff.

All of our medical staff are trained in providing family medicine. Providers with specialty areas, such as osteopathic manipulative medicine, acupuncture, or sports medicine will have this listed in their profile. When scheduling an appointment for a specific service, take a look at the providers who specialize in this area. You can email or call Health Services and ask to schedule with a specific provider. 


Health Services Leadership Team

Alex Tremis, MD

Medical Director

Schedule an Appointment with Dr. Tremis for Disordered Eating Behavior Treatment, Birth Control, or Care Coordination Concerns

 Education

Residency: Central Maine Family Medicine Residency, Family Medicine, Lewiston, ME

Graduate Degree: DeVry University, MBA, Napierville, IL

Medical Degree: American University of the Caribbean School of Medicine, MD, Sint-Maarten

Undergraduate Degree: McGill University, BSc, Montreal, QC, Canada

Board Certifications

Family Medicine: American Board of Family Medicine

As a primary care provider, I am often a patient’s first point of contact when it comes to health preservation, illness prevention and chronic disease management. My goal is to use evidence-based practices to educate patients and provide them with the knowledge needed to support their health journey.

In my specific role as Medical Director at Bates Health Services, I hope to apply this same knowledge and experience to support students on campus as they navigate their health and academic success.

Brenna Callahan, MSW

Director of Health Services and Student Well-Being

Reach out to Brenna for any questions related to accessing medical care, resources on campus, care coordination, health insurance, and managing your medical needs as a college student. You can email Brenna at healthservices@bates.edu.

Brenna Callahan (she/her), a 2015 graduate of Bates, serves as the Director of Health Services and Student Well-Being. She is responsible for working collaboratively with our partners at Central Maine Medical Center to support students in navigating the healthcare system and managing their medical needs on campus and directing the Office of Student Well-Being and the Well-Being at Bates program. Brenna received her Master’s in Social Work at Smith College in 2020. She worked with adolescents and young adults in both school and outpatient settings, providing psychotherapy and supporting individuals in navigating the medical, mental health, and education systems. Prior to graduate school, Brenna received her Bachelor’s degree in interdisciplinary studies and French and francophone studies from Bates College, and worked as the AmeriCorps VISTA at the Harward Center working with youth-focused organizations in the Lewiston/Auburn community.

Michelle Pepin, RN

Clinical Coordinator


Faculty Medical Providers

Patricia Collins, DO

Hannah Kazal, MD

Genesis Juat, MD

Amy Mack, MD

Lauren Nadkarni, MD

Jerome Pomeranz, MD


Medical and Office Staff

Allison Ceprano

Patient Service Representative

Kelly Ducas

Medical Assistant

Kelly joined the Bates Health Services staff in April of 2023.  She brings to us 15 years of Medical Assistant knowledge with 12 years spent in Pediatrics.  She is looking forward to caring for the Bates students and helping them stay healthy during this school year. 

Maggie Leonard

Registered Nurse

Maggie has been part of the Bates community since 1989. Her role as a staff nurse is multifaceted, assessing students and providing proper triage for medical care. Prior to her interest and practice in college health she worked primarily in pediatrics, in hospital and in home care. She graduated from The Children’s Hospital School of Nursing in Boston and attended Northeastern University.


Rotating Medical Residents

Jesse Atwood, DO

Sydney Morse, MD

Sarah Nasrallah, MD

Christine Nwoke, DO

Al Privorozky, MBB Ch

Sarah Sacco, DO

Kevin Stavness, DO