Our Providers
Meet Our Expert Medical Team
Meet our experienced providers and dedicated office staff, offering years of expertise in the medical industry. Ready to schedule an appointment? Call us today at (978) 354-4611!
Primary Care Providers

Hans C. Jeppesen, MD, MBA
Physician & Founder

Gurpreet Saini, NP
Nurse Practitioner

Alla Guenin, MD
Physician

Maria Dalomba, NP
Nurse Practitioner
Hospital Medicine & Geriatric Medicine

Denise Gafanhao
Nurse Practitioner

Jenya Appleton
Nurse Practitioner

Beth Rowlands
Chief Nurse Practitioner

Oleksandr Barchuk
Nurse Practitioner

Jonadab Erthon
Nurse Practitioner

Katina Herron
Nurse Practitioner

Shayla McCarthy
Nurse Practitioner

Anne Zlevor
Nurse Practitioner

Elizabeth Shortsleeve
Nurse Practitioner

Santosh Poudel, MD
Physician/Medical Director

Megan Callahan, MD
Physician/Medical Director

Hans C. Jeppesen, MD, MBA
Physician & Founder
Areas of Expertise: Primary Care, Hospital Medicine and Geriatric Medicine
Dr. Hans Jeppesen is a board-certified physician in Internal Medicine, having completed his medical degree in 2005 and residency training in 2008 at the University of Minnesota. Jeppesen’s clinical practice encompasses primary care and hospital medicine and is privileged to lead a highly skilled team of medical professionals.
Before founding Charter Health in 2017, Dr. Jeppesen served as Chief of Hospital Medicine at Mass General Brigham Salem Hospital. He has been recognized as a Senior Fellow in Hospital Medicine by the Society of Hospital Medicine, reflecting his commitment to excellence in patient care and leadership in the field.

Gurpreet Saini, NP
Nurse Practitioner
Areas of Expertise: Primary Care, Hospital Medicine and Women’s Heal
Gurpreet Saini holds a Master of Science in Nursing from Salem State University and a Bachelor of Science from Merrimack College. As a licensed Adult-Gerontology Nurse Practitioner in Massachusetts, she has been dedicated to primary care for the past three years with a focus over the last two years on serving underserved populations in Springfield, MA.
Saini’s expertise includes family planning and women’s health services, offering comprehensive care such as birth control counseling, gynecological exams—including cervical cancer screening via PAP smears—breast exams, and procedures like IUD and Nexplanon insertion. Her commitment is to providing accessible and compassionate care tailored to all of her patients’ needs.

Alla Guenin, MD
Phyisician
Areas of Expertise: Primary Care, Hospital Medicine and Women’s Health
Bio coming soon!

Maria Dalomba, NP
Nurse Practitioner
Areas of Expertise: Primary Care, Hospital Medicine and Women’s Health
Bio coming soon!