Meet Our Providers

Meet our experienced team of primary care providers Dr. Siri, Dr. Marella and Physician Assistants.
They are knowledgeable in the medical field and care about their patients.
They take the time to answer your questions and make sure that you receive the treatment you need.

Dr. Shantipriya Siripurapu, MD

Dr. Shantipriya Siripurapu is an attentive internist serving the community of Phoenix since 2007. Dr. Siripurapu obtained her medical degree from Government Medical College Nagpur, India. She completed her residency in internal medicine at Hurley Medical Center in Michigan.

Dr. Siripurapu is the co-founder of Phoenix Internal Medicine. She is board certified by the American Board of Internal Medicine. Dr. Siripurapu is trilingual in English, Hindi, and Telugu.

Dr. Siripurapu is sensitive to the uniqueness of each patient’s situation and adapts her consultations and treatment options appropriately to accommodate individual needs and concerns. She is deeply committed to the well-being of her patients. She takes a thorough and precise approach to her consultations to ensure that she is consistently giving accurate diagnoses

Dr. Punnaiah Marella, MD

Dr. Punnaiah Marella attended Osmania Medical College in India where he completed his medical degree as well as an internship. He further completed his internal medicine residency in internal medicine at Michigan State University, Hurley Medical Center. His sound medical knowledge and passion towards his work are commendable and makes him a valued asset at the practice.

Fluent in English and Telugu, Dr. Marella looks after the diverse population of Phoenix, AZ. He brings extensive experience to his role at Phoenix Internal Medicine, where he always provides comprehensive care to his patients and emphasizes preventative care for all.

In addition to pursuing his clinical career, Dr. Marella has published articles and book chapters that focus on various topics in medicine. He also holds certification from the American Board of Internal Medicine. A dedicated provider, he invests in educating visiting individuals about their health and how they can make changes in their daily life to ensure healthy living.

Samantha Ross, Physician Assistant

Samantha grew up in the San Francisco Bay Area. She graduated from Gonzaga University with a bachelor’s degree in Human Physiology with a minor in Psychology. Post-grad, she moved to Portland, OR where she worked for 3 years as a CNA before attending South College PA Program in Nashville, TN. After grad school, she moved across the country with her long-term boyfriend and dog to reunite with his family in beautiful Phoenix, AZ.

She is certified through the National Commission on Certification of Physician Assistants (NCCPA) and is licensed to practice medicine by the Arizona Regulatory Board of Physician Assistants.

Samantha chooses to practice in primary care because she enjoys developing relationships with her patients and being a medical hub throughout their health journey. She also enjoys advocating for her patients and helping them reach their goals.

In her free time, Samantha enjoys spending time with family and friends, playing with her 4 year old dog, reading, and knitting. She also enjoys traveling with her boyfriend to explore new places.

Hannah Hugo, Physician Assistant

Hannah attended Northern Arizona University in Flagstaff, AZ where she earned her Bachelors of Science in Biology with minors in Chemistry and Psychology. She furthered her education by attending Alderson Broaddus University in West Virginia, where she received her Masters of Science in Physician Assistant Studies. She is certified by the National Commission on Certification of Physician Assistants (NCCPA) and is licensed to practice in medicine by the Arizona Regulatory Board of Physician Assistants.

Hannah is dedicated and compassionate in providing the best care for her patients. She strives to equip them with the resources necessary while
working alongside them to achieve their treatment goals.

In her free time, she enjoys hiking with her dog Winston, going to concerts and traveling. One of her favorite and most memorable trips was her time spent in Kenya on a medical mission.

Gabrielle Stick, Physician Assistant

Gabbie was born in Reading, Pennsylvania, about an hour outside of Philadelphia. She graduated summa cum laude at Lock Haven University with a bachelor’s degree in Health Science with a minor in Psychology. She was then accepted at Lock Haven’s Physician Assistant program and obtained her Master’s in Physician Assistant Studies. After graduating, she moved to Arizona with her fiance to start their lives in the beautiful state of Arizona.
She is certified through the National Commission on Certification of Physician Assistants (NCCPA) and is licensed to practice medicine by the Arizona Regulatory Board of Physician Assistants.

Gabbie chose to practice in primary care because she enjoys creating a relationship with her patients and getting to know them better with every visit. She also likes how primary care requires a generalized knowledge of medicine rather than specializing.

Gabbie enjoys hiking with her dog and watching movies in her free time. She tries to explore new areas of Arizona every chance she gets.

Reilly Yeager, Physician Assistant

Reilly is from Scottsdale AZ. She attended University of Arizona where she received her Bachelor of Science in Nutrition Sciences. She then went on to receive her Masters of Medical Science in Physician Assistant Studies from Midwestern University here in Glendale AZ. She is certified by the National Commission on Certification of Physician Assistants (NCCPA) and is licensed to practice in medicine by the Arizona Regulatory Board of Physician Assistants.

Reilly chose primary care because she enjoys fostering relationships with her patients and working together to navigate their healthcare needs. She strives to provide compassionate care for every patient’s unique needs.

Reilly enjoys spending time with her family and friends. Some of her favorite activities in her free time are hiking and playing with her 2 cats.

Juliana Petrovic, Physician Assistant

Juliana grew up in the Chicagoland area and developed a passion for health and wellness from a young age. She attended the University of Arizona, where she earned a bachelor’s degree in Public Health with an emphasis in global health. During college, Juliana spent time studying abroad in Copenhagen, where she had the opportunity to immerse herself in international healthcare systems and cultures.

After graduating, Juliana returned to Chicago, where she earned a Master’s of Physician Assistant Studies from Chamberlain University. She is certified by the National Commission on Certification of Physician Assistants (NCCPA) and licensed to practice medicine by the Arizona Regulatory Board of Physician Assistants. She was one of three students in her PA program to be selected for the Excellence Award, demonstrating outstanding commitment to community health.

Juliana ultimately decided to move back to Arizona, drawn by her love of the active lifestyle and the natural beauty the state has to offer. She enjoys spending time with her fiance, family, and friends. She spends her free time hiking, playing pickleball, and traveling. Juliana chose to pursue a career in primary care because she values the opportunity to build meaningful relationships with her patients. She strives to create a welcoming, supportive environment where her patients feel heard and cared for, allowing her to make a lasting impact on their health and well-being.