Our Team

Meet the Providers

Our physicians and nurse practitioners base their success on our patient's long term good health. We believe in your quality of life and personalize our care around your health concerns.

Meet Our Physicians

Dominick Galluzzo

M.D.

Dr. Galluzzo is a graduate of MCP-Hanehmann University, completing his internship and residency in internal medicine at Thomas Jefferson Hospital in Philadelphia. He is Board Certified in Internal Medicine and strives to provide quality, compassionate care to every patient he encounters. He joined MCMA in 2004.

Dr. Galluzzo's professional interests lie in prevention and wellness along with the management of chronic diseases that affect young adults through geriatric patients.

Melissa John

M.D.

Dr. John is a 2009 graduate of Drexel University College of Medicine (formerly MCP-Hahnemann University) in Philadelphia. She was accepted to Drexel University College of Medicine from high school, and attended Rosemont College through their early assurance direct pre-medical program. Dr. John graduated with a degree in biochemistry from Rosemont College in 2005 and proceeded to medical school. She completed her internship and residency in 2012 at Montefiore Medical Center (Albert Einstein College of Medicine University Hospital) in Bronx, NY.

She is Board Certified in Internal Medicine and has a keen interest in challenging medical problems affecting diverse ethnic populations. Dr. John joined MCMA in 2012.

John M. Butler

M.D.

Dr. Butler was born and raised in the Philadelphia area. He received a BS in Biology, graduating from Albright College with honors in 1989. Dr. Butler attended Jefferson Medical College, received his M.D. degree, and joined MCMA as a full-time physician in 1996.

Dr. Butler manages his patients in both the hospital and office settings and is Board Certified in Internal Medicine, Hospice and Palliative Care. He has served as Medical Director for Holy Redeemer Hospice for over 10 years.

David L. Litt

M.D.

Dr. Litt graduated from Thomas Jefferson Medical School in 1993 and continued at Thomas Jefferson Hospital for his internship and residency program. Dr. Litt takes an interest in a broad range of medical issues ranging from preventative healthcare to the diagnosis and treatment of more complicated diseases in the young and elderly.

Joining MCMA in 1996, Dr. Litt seeks to take an active role in the comprehensive care of his patients. Philadelphia Magazine has recognized Dr. Litt as one of their Top Doctors in Internal Medicine for 2018.

Meet Our Nurse Practitioners

Barbara Holdren

DrNP, C.R.N.P.

Barbara Holdren has been in the medical field since 1976 and joined MCMA in 1993. She received her Nursing Diploma from Frankford Hospital School of Nursing and received her Bachelors Degree in Nursing from Penn State University. Barbara then continued her education obtaining a Master's Degree in nursing with certification as a Family Nurse Practitioner from the University of Pennsylvania. Beginning in 2011, Barbara began her Doctoral degree in Nursing Practice at Drexel University and presently holds a degree of DrNP.

Barbara recently completed a study concerning the treatment of diabetes. This investigative study will discover for the diabetic the need for problem solving tactics or more appropriate social support. Once determined, an intervention will be implemented to improve diabetic outcomes.

Sheryl Varghese

C.R.N.P.

Sheryl is a Board-Certified Family Nurse Practitioner by the American Association of Nurse Practitioners. She earned both her Bachelor of Science and Master of Science degrees in Nursing from Villanova University in the years 2017 and 2023 respectively. She also earned her degree in Doctor of Medicine from St. Louis University, Philippines in 2013.

She has over 5 years of experience working as a Registered Nurse in multiple acute care settings. She also practices as an Aesthetic Nurse Practitioner. Her passion lies in Primary care, Dermatology, Aesthetics, and Research. Her goal is to provide excellent primary care and to be able to help people achieve their best selves.