Online Scheduling

Schedule an appointment with one of our providers

We now offer online scheduling for our patients. We have dedicated times for those who prefer to schedule their appointments online without having to call. However, if you do not see a time that works for your schedule, we’d be happy to help you with more options over the phone.

Bonanza

Bonanza

Virgilio Siu, PA-C

Languages: English, Spanish, and Cantonese

Virgilio Siu is a Board-Certified Physician Assistant who has been practicing Family Medicine in Las Vegas since 2006. He graduated from UC Davis, California Physician Assistant Program. Before migrating to the United States, he graduated from the University of San Carlos, Guatemala, school of medicine in 1980, and in 1986 completed a postgraduate residency in obstetrics and gynecology in Tegucigalpa, Honduras. Virgilio Siu worked for more than a decade both in hospital settings and outpatient community clinics, rendering services as a consultant in OB/GYN and family practice.

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Bonanza

Mirielys Merayo-Mejias, MSN, APRN, FNP-C

Languages: English and Spanish

Mirielys Merayo-Mejias, MSN, APRN, FNP-C is a certified family practice clinician. She received her medical degree from South University in Savannah, Georgia after medical school in Cuba and Puerto Rico. She loves to help her patients focusing on compassion for their medical care. Outside of work, she enjoys spending time with her family.

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Bonanza

Daniel Arsulo, APRN

Languages: English and Tagalog

Daniel Arsulo graduated from National University with his Master’s in Science in Nursing. He has been serving the East Las Vegas population for years and is excited to continue making his community healthier.

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Boulder City

Boulder City

Regina Evans, APRN, FNP-C

Languages: English

Regina is originally from Pittsburgh, PA She received her Nurse Practitioner degree from Wheeling Jesuit University in Wheeling, WV She has been in nursing for over 16 years with extensive work in Cardiothoracic Surgery . Regina became a Family Nurse Practitioner in 2019. She values building meaningful relationships with all of her patients and truly enjoys what she does. Outside of work Regina is a huge MMA fan and enjoys attending various activities such as car shows/conventions.

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Eastern

Eastern

Alex Ley Rojo, APRN, FNP-C

Languages: English and Spanish

Alex Ley Rojo is originally from Cuba and was a doctor in his country before coming to the United States to pursue his future. He came to the states and became a family nurse practitioner from Phoenix University in 2023. He is following his dreams of continuing his medical career of being a family medicine provider to help patients with a better quality of life. In his personal time, he enjoys hiking and the outdoors.

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Eastern

Alejandra Marquez De Rozakis, APRN

Languages: English and Spanish

Alejandra is originally from Durango, Mexico and is a compassionate family nurse practitioner. She received her Master‘s degree from Simmons College in Boston, MA in 2020. She is passionate about building a bond with her patients. She followed her dreams into the medical field because her grandmother introduced her to the clinic setting when she was around 5 years old. She enjoys walking and reading in her spare time.

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Henderson

Henderson

Rini Mathews, MSN, APRN, FNP-C

Languages: English, Hindi, and Malayalam

Rini is originally from India, but has been in Las Vegas for 20 years. She graduated with honors in 2020 from Touro University, Nevada as a Nurse Practitioner Specialist. Having more than 3 years of diverse experiences as a nurse practitioner, Rini follows her passion of medicine. She is proud that she is one of the other members of her family that are in the medical field. She enjoys the outdoors with hiking and camping, and has completed a 19-hour hike in Yosemite.

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Henderson

Aishwarya Vyas-Lahar, MD

Languages: English, Hindi, Urdu, and Punjabi

Dr. Aishwarya Vyas-Lahar is an internal medicine physician. She is originally from India but resides from Rochester, NY. She did her medical school training from American University of Antigua and has had her MD since 2016. She graduated residency in the midst of the pandemic in June 2020 from Norwalk-Yale University program in Connecticut. During her residency training, she was awarded in recognition of her love and dedication to patients as a primary care physician. In her free time, she loves to do and teach yoga and meditation, and has an interest in Bollywood dancing and is a big foodie.

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Rainbow

Rainbow

Elizabeth Kelemen, MSN, APRN, FNP-BC

Languages: English and Spanish

Liz is originally from Burbank, CA. She received her Nurse Practitioner degree from Graceland University in Independence, MO. She has been in nursing for over 30 years with extensive work in the ER as a trauma nurse. Liz became a Family Nurse Practitioner in 2019 and found her passion in the medical field. She values building meaningful relationships with her each of her patients, especially when she is entrusted to treat generations of families. Outside of the clinic, Liz is a huge Golden Knights fan and loves concerts.

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Rainbow

Samantha Altergott-Sterns, MSN, APRN, FNP-C

Languages: English

Samantha Altergott-Sterns moved to Las Vegas over 13 years ago from Chicago, Illinois. She graduated from Touro University of Nevada with her Master’s in Science of Nursing as a family nurse practitioner in 2022, although has been in nursing since 2019. Samantha is eager and passionate about connecting with her patients to help them have a better understanding of their health. In her free time, she enjoys watching football while rooting for the Steelers.

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South Rancho

South Rancho

Jasmin Matutis, APRN, FNP-BC

Language: English, Cebuano, and Tagalog

Jasmin Quillosa Matutis is a board-certified family nurse practitioner licensed in Nevada. She earned her Master of Science in Nursing specializing in family practice from Samuel Merritt University and holds a National certification from the American Nursing Credentialing Center (ANCC). She has diverse, fulfilling years of nursing experience from acute care, skilled nursing & rehab, community health nursing, gero-psych, corrections nursing, mental health rehabilitation and recovery.

Jasmin is an active member of several professional organizations and networks, including the American Association of Nurse Practitioners, the Nevada Nurses Association, Western Regional Advance Practice Nurses, and the National Nurse Practitioner Entrepreneur Network. Jasmin accomplished to join the Nu XI At Large Chapter, Sigma Theta Tau, the International Honor Society in Nursing in 2020.
Jasmin is obtaining her doctoral degree in nursing practice, which will provide more access to health care and patient services in outpatient, inpatient, and virtual settings.

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South Rancho

Nerissa Dimailig, APRN

Language: English and Tagalog

Nerissa C. Dimailig, APRN is a family nurse practitioner with over 14 years of experience serving the Las Vegas community. She received her degree from the University of Nevada, Las Vegas in 2008, and was previously a primary care medical doctor and OBGYN practitioner in the Philippines. She came to the United States to continue her medical career in order to provide excellent care with advanced medicine in a variety of settings including hospitals, primary care clinics, and home health services. She develops long, lasting relationships with her patients that carry on for the next generation.

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South Rancho

Stephanie Zority, MD

Language: English

Dr. Stephanie Zority is a proud Las Vegas local. After completing her undergrad at San Diego State University, she went on to medical school at Semmelweis University in Budapest, Hungary. Yearning to return home to Las Vegas, she then went on to do her residency training in Family Medicine with Valley Health System Consortium, where she served as chief resident her final year. She is currently completing a fellowship in Addiction Medicine as she hopes to bring better care to those affected by substance use disorder. She also has a special interest in women’s health, sexual health, obesity medicine and disability medicine. Outside of medicine, Dr. Zority has a love for all things Bravo TV and is an avid Swiftie.

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Southern Hills

Southern Hills

Angela Lybbert, PA-C

Language: English

Angela Lybbert is a board certified Physician Assistant who has been in practice for over 20 years. She received her Bachelor of Science in Biology from University of Nevada Las Vegas and her Certificate of Physician Assistant Studies from University of Utah. She has experience in Internal Medicine, Family Medicine and also practiced as a hospitalist. She grew up in Las Vegas and has been married for 20 years. She has 3 girls, 19 year old twins and a 17 year old. She loves to ride bikes, work out, watch sports and read books in her spare time. She also loves reality TV shows!

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Southern Hills

Eugene Shin, MD

Language: English and Korean

Dr. Shin will be officially seeing patients staring October 16 at the new Southern Hills location which is much larger and renovated.

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Stonecreek

Stonecreek

Dr. Yvonne A. Barry

Languages: English, French, and Czech

Dr. Yvonne A. Barry is a seasoned family practitioner featuring nearly two decades of experience in her field. Her scope of family practice encompasses women’s health, sports medicine, adult medicine, mental health, and geriatrics. She has been the on-call doctor for Cirque du Solei, has provided care for the geriatric community through her on call services in the greater Las Vegas area, and has acted as an advocate for women’s cardiovascular health. Dr. Barry is an avid reader and takes an interest in promoting her patients’ health through preventative measures such as optimizing nutrition, exercise, and stress relief. Furthermore, The International Association of HealthCare Professionals (IAHCP) has selected Dr. Barry to be featured in their premier publication of The Leading Physicians of the World. Dr. Barry helps people get well both physically and emotionally. “I pride myself on being compassionate as well as scientific. I enjoy seeing people’s faces light up when I tell them they are well”, says Dr. Barry.

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Stonecreek

Mark Polintan, MSN, APRN, FNP-C

Languages: English, Tagalog, Cebuano, and Kapampangan

Mark is a board-certified nurse practitioner specializing in adult medicine. He received his Master of Science in Nursing from Chamberlain University in Illinois with distinction in 2021. Mark has been a registered nurse since 2005 and practiced in medical-surgical, case management, utilization management, and academe. Mark was originally from the Philippines, and immigrated in the United States in 2015. With various nursing experience, Mark realized the importance of outpatient care on an ongoing basis to improve health outcome. In his free time, Mark enjoys cooking, singing, and traveling. Mark is fluent in English, Tagalog, Cebuano, and Kapampangan.

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Sun City

Sun City

Sheila Miranda, MD

Languages: English

Dr. Sheila Miranda is an Internal Medicine specialist and primary care physician at Valley Oaks Medical Group in the Sun City Office. Originally from California, she moved to Las Vegas to pursue her residency at the University of Nevada School of Medicine in 2001. With over 20 years of experience, she initially worked in local hospitals, providing care to acutely ill patients. However, three years ago, she transitioned to the primary care setting.

In addition to her medical career, Dr. Miranda has a passion for bodybuilding. She is a professional bodybuilder and has been actively competing in bodybuilding shows for the past five years. Her expertise in this field allows her to offer patients valuable insights into proper nutrition, fitness, and weight loss strategies. Outside of work, Dr. Miranda is happily married to her high school sweetheart for 23 years and is the proud mother of two sons.

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Sun City

Rebecca Crowley-Huey, PA-C

Languages: English

Rebecca Crowley-Huey is a board-certified Physician Assistant with over 27 years of experience. She
went to the University of Texas Medical Branch of Galveston for Physician Assistant school. She earned
her Master’s in Clinical Nutrition from Bridgeport University. She has training in family practice,
functional medicine, nutrition, homeopathy, bioidentical hormone replacement therapy, and
endocrinology. Rebecca believes in individualized medical care since there is “no one size fits all”
treatment in medicine. Her extensive and diverse experience helps her offer many options to her patients to help them achieve optimal health.

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