Heart, Lung and Vascular

Yenhui Huang, MD (Dr. Bob)

~Cardiology~   Yenhui Huang, MD, (aka Dr. Bob) is board-certified in Internal Medicine, Cardiology, Echocardiography and Nuclear Cardiology. He graduated from University of Witwatersr and in Johannesburg, South Africa and completed his internship, residency and fellowship through the University of Arizona in Tucson, Arizona. “Dr. Bob” has always beenfascinated with… Read More »


Melinda Klug, N.P.

~Pulmonary Medicine~   Melinda Klug, DNP-AGACNP, joined the Active Medical Staff at Summit Healthcare in 2014. She graduated from the University of Arizona with a Doctorate in Nursing Practice – Adult Gerontology Acute Care Nurse Practitioner in 2015. Melinda knew that she wanted to become a Nurse Practitioner after nursing… Read More »


Sarah Garfield, N.P.

Sarah Garfield is a Primary Acute Care Nurse Practitioner Board certified through AACN (American Association of Critical Care Nurses). She graduated with her Masters of Science in Nursing: Acute Care Nurse Practitioner from Grand Canyon University in 2016. Sarah knew from a young age that she wanted to work in… Read More »


Gretchen Schaber, N.P.

~ Cardiology ~ Gretchen Schaber is a Certified Geriatric and Adult Nurse Practitioner specializing in Cardiology. She received her Bachelor’s in Nursing from East Carolina University and her Master’s in Nursing from the University of Arizona. Gretchen Schaber has been a nurse since 1976, and practiced in Cardiology since 1986.… Read More »


Simranjit Galhotra, M.D., MBA, FCCP

~ Pulmonary and Sleep Medicine ~ Simranjit Galhotra is board-certified in Pulmonary Disease and Sleep Medicine. He received his medical degree and his MBA from the University of Chicago. He completed his three-year Internal Medicine Residency at Washington Hospital Center in Washington, DC, and his three-year Pulmonary and Critical Care… Read More »


Brian Fuller, D.O., FACOI

~ Cardiology ~ Brian Fuller, D.O., FACOI is an Interventional Cardiologist. He is board-certified in Internal Medicine, Adult Cardiology and Nuclear Cardiology. He graduated from Kirksville College of Osteopathic Medicine in Kirksville, Missouri. He completed his internship and residency through Midwestern University at Tucson General Hospital in Tucson, Arizona. He… Read More »


Imran Ata, M.D.

~ Cardiology ~ Dr. Ata received his medical degree from Nishtar Medical College, Multan, Pakistan in 1985 and then completed his internship in Internal Medicine at Nishtar Medical College. He then joined the National Institute of Cardiovascular Diseases in Karachi, Pakistan and spent 7 years at the institute doing research… Read More »