Nine Years Of Private Practice

At Good Years Family Medicine, our team is dedicated to providing medical care that is specifically tailored to your needs. Our team is trained in a variety of areas including internal medicine, pediatrics, orthopedics, gynecology, office surgery, psychiatry, and family counseling. Your health is of the utmost importance to us, and we look forward to providing the services you need. We serve patients in both Phoenix and Goodyear (with walk-in services only avialable at our Phoenix office).

With a modern, state of the art facility, we can fully utilize the technology available in family medicine to deliver high quality treatment. You can rest assured that our staff will treat you with warmth and care. For more information, read about our team members below.

Meet the Team

Dr. Gregory Chrostowski & Dr. Agnieszka Chrostowski

Dr. Agnieszka Chrostowski and Dr. Gregory Chrostowski are both board certified Family Medicine physicians and have been working in a private practice setting in the Phoenix area since 2003.

Dr. Agnieszka Chrostowski was born in Poland and grew up in California where she graduated from the University of California, Los Angeles (UCLA) with a Bachelors Degree in Physiological Science. Dr. Gregory Chrostowski was born in Brooklyn, New York and attended the State University of New York (SUNY) at Buffalo and graduated with a Bachelors Degree in Biological Science. Dr. Agnieszka Chrostowski and Dr. Gregory Chrostowski both attended medical school at the Jagiellonian University in Krakow, Poland. They graduated in 2000 with a medical degree and returned to the United States to complete their Family Medicine Residency at Swedish Covenant Hospital in Chicago, Illinois.

Since 2003 Drs. Chrostowski have enjoyed treating both children and adults and feel that as Family Medicine physicians, they are highly skilled and effective to interact with and improve the health of their patients, their families, and their community. Dr. Agnieszka and Gregory Chrostowski are both fluent in Polish and are also able to communicate in Spanish. They have expanded over the years and have constructed a highly motivated and skilled team of nurse practitioners and physician assistants to help manage their patients. In October of 2014, they opened a second location in Goodyear, Arizona.

Dr. Agnieszka and Gregory Chrostowski have named their medical practice Good Years Family Medicine. At Good Years Family Medicine, they treat chronic medical conditions such as diabetes, hypertension, hyperlipidemia, asthma, COPD, osteoarthritis, and osteoporosis. Minor office procedures including biopsies, toenail removal, and joint injections are also offered as needed. Preventive exams such as well women exams and sports physicals are performed including vaccinations.

On a personal note, Dr. Agnieszka and Gregory Chrostowski have been married since 2000. They have 3 daughters and 1 son and enjoy spending time with their family playing sports such as tennis as well as enjoying Arizona’s nature including fishing and hiking.

Renee Ostin, FNP-C

Renee Ostin has had the privilege of being a Baccalaureate Registered Nurse for 17 years and a Board Certified Family Nurse Practitioner since 2007. Currently adjunct faculty professor for Arizona State University College of Nursing and preceptor for NP students with Grand Canyon University, University of Phoenix and many other colleges/universities.

Member of the Arizona Nurses Association, World Healthcare Organization Leaders, Sigma Theta Tau National Nurses Honor Society, American Academy of Nurse Practitioners, and Board Certified in Family Practice.

She loves to watch her two sons play their sports, Ice Hockey and Soccer and enjoy spending time with her husband of 18 years. Her philosophy is to treat every patient as if they were her family member and care for them in a mutual relationship to achieve a better level of health.

Tricia Stytle, D.O.

Dr. Stytle attended Indiana University in Bloomington, Indiana, where she earned her degree in Biology. She then attended Ohio University College of Osteopathic Medicine in Athens, Ohio where she earned her Doctor of Osteopathic Medicine (D.O.) degree. During her last year of medical school she met her future husband Dave, who is a native of Arizona. Dr. Stytle left Ohio to move west where she completed her family practice residency through Midwestern University/St. Luke’s Hospital. Since 1999, Dr. Stytle has been caring for patients in the Northwest Valley and she has now relocated to join Good Years Family Medicine in providing primary care in the Southwest Valley. Dr. Stytle and her husband have two teenage children.

Victoria Sierra, CLT LME LSO

An experienced Medical Aesthetician with outstanding academic and hands-on/practical knowledge in the laser & medical aesthetics field and over 20 years as a Sales Professional who takes exceeding the customer experience to the next level. I have studied with the University of Maryland Asian Division, graduated from the Le Esprit Academy in Michigan as a Licensed Esthetician followed by Clear Skin Institute in Phoenix as a Laser Technician in Aesthetics and advanced training with SculpSure® in Laser Fat Reduction. My journey has included the opening of two Medical Spas as Chief of Aesthetics and Laser Safety Officer (LSO.)

Through this culmination of education, training, practical application, and a passion for Aesthetics. I have found that sweet spot to help and guide customers with the right combination of treatment, products and customer service. I am living my dream of owning my own business called, “ Skin Deep by Victoria LLC” and having great time helping my clients to be their best self, building self-confidence, and making friendships. My passion outside of the spa is enjoying my four children and spoiling my grandkids.