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Our Practice

Remember when the doctor remembered your name or spent time with you? Well, now it's time to reacquaint you to the heart of healing with Internal Medicine Specialists of Southern Nevada. Our full-service medical practice is devoted to treating acute and chronic conditions as well as focusing on the most important element in the health equation: You!


Internal Medicine Specialists has earned a respected reputation from colleagues and patients for providing exceptional internal medicine services. Owned and operated by the physicians—each with a unique style—the philosophy that wellness is the way to well-being is collectively embraced. The IMS team delivers comprehensive care including weight management, dietary counsel and stress reduction, as well as treating chronic conditions like heart disease, diabetes, hypertension and cancer. With most insurance accepted as well as on-site x-ray, cardiac testing, labs and ultrasound, IMS priotizes your convenience.  IMS also understands that many delay medical care because of lack of insurance; that's why there are cash pay programs available.  IMS is poised and prepared to provide you exceptional internal medicine services. Be happy. Be healthy. Be well.



Babak Ghadishah, DO

Dr. Ghadishah earned two undergraduate degrees magna cum laude from UCLA, then went on to complete medical school at Touro University. He believes the best part of his profession is helping people feel better and he works hard to ensure good health for all his patients. Dr. Ghadishah is also a talented pianist and the married father of two young—and very loved—children. 


Gary Grossman, MD

Dr. Grossman is a long-time resident of Nevada and graduated with honors from the University of Nevada School of Medicine.  Dr. Grossman's meticulous and thorough style has resulted in a respected reputation amongst his peers and the gratitude of countless patients. While he works long hours to ensure his patient's well-being, he makes sure he attends his sons' lacrosse games. One of Dr. Grossman's guilty pleasures is eating pizza and watching re-runs of Seinfe


Robert Whipple, MD

Dr. Whipple, a retired B-52 bomber navigator, attended the University of Nevada School of Medicine and brings the same insightful skills he utilized in the USAF. His no-nonsense style is tempered by true compassion for the individual he's treating, using both western and nutritional approaches to healing. Dr. Whipple is married with grown children. When he's not at the office, you will likely find him and his new bride redecorating their home or jogging on Lone Mountain with one of their beloved German Shepherd dogs.


David Rosenstein, MD

Dr. Rosenstein is an esteemed graduate of Boston University School of Medicine. After many years exclusively as a hospitalist, Dr. Rosenstein is pleased to also see patients in his office. Dr. Rosenstein is very active in medical education and served as Assistant Professor of Medicine for the University of Nevada School of Medicine and is also an Adjunct Assistant Professor of Internal Medicine for Touro University. Dr. Rosenstein enjoys practicing addiction medicine and helps his patients with Suboxone for opioid addiction. A single father with one child, he and his family enjoy camping and travel. 


Rebecca Sinai, DO


Pejman Kharazi, MD


Jennifer Cribb, CNP

Ms. Cribb has  been a Nurse Practitioner in Primary Care since 2005.  She is committed to providing comprehensive and attentive care to each patient. She embraces a holistic approach to  health, taking into account physical health, mental health, and lifestyle.  Delivering care with compassion and understanding is her top priority.  Prior to becoming a Nurse Practitioner, she worked in Critical Care and as a Flight Nurse for Flight For Life.  She is happy to have shifted into an area of healthcare where she can focus more on preventtion and early detection instead of crisis management.  When not working to improve pateint's health and well being, she enjoys playing tennis, reading, cooking with her husband, and playing with her three beautiful huskies.