John Vaz, MD
Chief Medical Officer
Dr. John Vaz graduated from medical school with honors in 2006. He completed his residency in Internal Medicine from the University of Connecticut and a fellowship in Infectious Disease from the University of Maryland. Having more than 12 years of diverse experiences, especially in Internal Medicine and Infectious Disease, his current practice interests are HIV care, Viral Hepatitis management, PrEP & nPEP, LGBT care including transgender care, and chronic medical illnesses. He is passionate about addressing disparities in health in populations that are served in community health centers.
Aaron Altura, MD
A graduate of UC Davis School of Medicine, Dr. Altura completed his residency in Obstetrics and Gynecology at Louisiana State University in 1995. He has been serving our patients since 1996.
Duffy Casey, MD
A graduate of Eastern Virginia Medical School, Dr. Casey completed his residency in Obstetrics and Gynecology at the University of Hawaii in 2013. Board Certified in Obstetrics and Gynecology since 2013, he has been serving our patients since 2013.
Jaimie Johnson, MD, FACOG
A graduate of the University of Florida College of Medicine in Gainesville, Dr. Johnson completed her residency in Obstetrics & Gynecology at the University of Hawaii in 2014. She became board-certified in 2016. She has been serving our patients since 2014.
Ivy Lou Hibbitt, APRN
Mrs. Ivy Lou Hibbitt, APRN, is a Nurse Practitioner. She graduated in 2015, having over 3 years of diverse experience, especially in Nurse Practitioner.
Jason Laird, MD
A graduate of the University of South Carolina School of Medicine Dr. Laird completed general surgery and internal medicine residency programs at Palmetto Health Richland Memorial Hospital. He has been certified for Outpatient HIV treatment from the American Academy of HIV Medicine since 2010. Dr. Laird was Board Certified in Internal Medicine in 2009. He has been serving our patients since 2015.
Daniel Nead, PHD
Dr. Daniel Nead, PHD, is a Clinical Psychologist. He graduated in 2013, having over 5 years of diverse experience, especially in Health Psychologist.
Casandra Simonson, MD
A graduate of University of Kansas School of Medicine, Kansas City, Dr. Simonson attended the Residency program at Louisiana State University Children’s Hospital, New Orleans. Dr. Simonson received her Board certification for Pediatrics in 2014. She has been serving our patients since 2014.
Gabrielle O’Sullivan, MD
A graduate of the University of Washington in Seattle with a Doctor of Medicine Degree, Dr. O’Sullivan went on to Residency at the University of California, San Francisco affiliated Sutter Family Practice Residency, Santa Rosa, CA, in 2003. Dr . O’Sullivan was recertified by the American Board of Family Medicine, 11/2013. She has been serving our patients since 2016
Emilie Guinto, DDS
A graduate of SUNY at Stony Brook School of Dental Medicine in Stony Brook, New York, Dr. Guinto completed her Advanced Education in General Dentistry Residency at Schofield Barracks, Tripler Army Medical Center, Honolulu, HI, and Pediatric Dentistry at University of Maryland Medical Center in Baltimore, MD. She will be completing her board certification in September 2016. Dr. Guinto has been serving our patients since 2015.
Allison Philipps, ANP
Adult Nurse Practitioner
A graduate of Viterbo University in LaCrosse, Wisconsin with a Master in Science in Nursing and Board Certified by the American Nurse Credentialing Center as Adult Nurse Practioner. Allison Philipps has been serving our patients since 2016.
Helen Barrow, TTS
A Tobacco Treatment Counselor Certified from the University of Arizona and the Mayo Clinic, Ms. Barrow was named Outstanding Service Provider in Tobacco Control by the Coalition for Tobacco Free Hawaii in 2013. Currently, she is working on her Master’s of Social Work, a Candidate for graduation summer, 2016.
Jessica Bullock, APRN
Nurse Practitioner Specialist
Alisha Yoshitsugu, PsyD
A graduate of Hawaii School of Professional Psychology at Argosy University, Honolulu, Hawaii, Dr. Yoshitsugu became a clinical psychologist in 2015. She has been serving our patients since 2015.