About Us

Prism Health offers a safe, affirming, and non-judgmental space where all members of the lesbian, gay, bisexual, transgender, and queer community can obtain the compassionate and culturally effective health care they need and deserve.

We prioritize inclusivity to ensure that all members of the LGBTQ+ community can access affirming and high quality health care. Patients do not have to be lesbian, gay, bisexual, transgender or queer to receive care, but services will focus on addressing the sensitive issues of sexual minorities and their families and friends.


Miguel David Carreón | FNP, DNP

Pronouns: He, Him, His

Miguel D. Carreón is a Doctor of Nursing Practice who completed his Masters of Nursing at Oregon Health & Science University and is currently finishing his Doctorate in Nursing Practice Degree. He has done research related to PrEP prescribing practices, knowledge, and attitudes among primary care providers, as well as finding innovative ways to promote provider awareness of PrEP through educational opportunities. Miguel was born in Ensenada, Mexico, and is a fluent Spanish speaker. He has lived in Portland for 5 years, but has lived in Oregon for the past 16 years. He enjoys exploring the city of Portland, and hopes to make it his home for years to come.

Dr. Diana Antoniskis | MD, IDM, AAHIVS

Pronouns: She, Her, Hers

Dr. Antoniskis was born and raised in Nebraska and graduated from the University of Nebraska Medical Center. Her internship was at San Francisco General Hospital during the early years of the HIV epidemic, and she went on to pursue additional training in both Internal Medicine and Infectious Diseases at Los Angeles County/USC Medical Center; she is board certified in both of those specialties. She moved to Portland in 1991 to join Kaiser Permanente, where she worked in the Immune Deficiency Clinic (IDC) and the general Infectious Disease department until her retirement in 2017. During her time at KP, she also served as the Director of Clinical Research for the IDC and was Chief of that department for approximately 10 years. She served as the Director of Operations for Medical Specialties for Northwest Permanente from 2012-2017 in addition to her clinical practice.

Mandy Wilson McKimmy | FNP-C, DNP

Pronouns: She , Her, Hers

Mandy Wilson McKimmy is a board certified Family Nurse Practitioner with over 15 years of experience in primary care.  She attended The University of Texas Medical Branch (UTMB) and earned her Bachelor of Science in Nursing in 2000 and her Master of Science in Nursing, Family Nurse Practitioner Track in 2003.  She worked in the Houston area for UTMB in Family Practice and Pediatrics for a number of years before relocating to Oregon.  In 2013 she completed her Doctorate of Nursing Practice (DNP) at The University of Alabama.  She has been working for Oregon Health & Science University for the past six years as an assistant professor in the FNP and DNP programs while continuing to practice in primary care, with a focus on young adults and sexual health.  Mandy has worked closely with doctoral students completing projects on LGBTQ+ health, including the use of PrEP in primary care and working to decrease health care disparities in LGBTQ+ populations in rural Oregon.  In addition to practicing and teaching, Mandy is actively involved in Nurse Practitioners of Oregon and is serving her fourth year as the state representative of Oregon for the American Association of Nurse Practitioners. Mandy and her partner have six children and enjoy spending time as a family doing outdoor activities such as wake-boarding, hiking, camping, and skiing.


Caitlin Wells | Director of Healthcare Operations

Pronouns: She, Her, Hers

Caitlin Wells is the Director of Healthcare Operations at Prism Health. In her role she supports preventative health programs at both Prism and Cascade AIDS Project. Caitlin’s passion and commitment lies in delivery quality health services to local communities specifically focusing on HIV, STIs, and sexual health. With this focus, her experience includes work with government agencies and non-profits in both international and local settings. Prior to arriving at Cascade AIDS Project, Caitlin worked with Mercy Corps, an International NGO that works in the world’s most challenging places to provide the right resources for people to transform their lives. Caitlin has also worked in state government level managing the Iowa AIDS Drug Assistance Program that provides HIV medications to low income individuals. Caitlin served in the Peace Corps in Botswana, Africa for two years working at the local government level supporting HIV prevention providers. As a Peace Corps Volunteer she supported community HIV testing events, Prevention of Mother to Child Transmission (PMTCT) programming, and psychosocial support to HIV+ youth.

Deven Ferté | Manager of Healthcare Operations

Pronouns: She, Her, Hers

Deven has worked in healthcare management and human services for almost seventeen years. She started her career in human services in 2000 and has since continued to grow professionally while transitioning to healthcare management, where she has worked for the last several years. The diversity in her professional experience results in the ability to deal effectively with the demands of a busy office and a diverse patient population. Patients and colleagues alike find Deven to be compassionate and understanding, and she is always busy working to ensure Prism Health is a thriving facility for patients to receive care. Deven also handles the insurance billing for Prism Health and understanding how confusing medical billing can be she is always willing to answer any questions. Deven is a native Oregonian and when she’s not busy working she enjoys spending time by hiking, exploring the city, traveling, digging through bins of records at a local music store, or curled up with her cats and a good book.

Tyler TerMeer | Executive Director

Pronouns: He, Him, His

Tyler TerMeer is Executive Director of Cascade AIDS Project, the oldest and largest community-based provider of HIV services in Oregon and SW Washington and Prism Health.  Tyler graduated from Otterbein University with a BFA in Theatre Design Technology, fully intending a career in theatre management. However, after testing positive for HIV in 2004 and experiencing the support and expertise of a local AIDS service organization, Tyler turned his efforts toward helping others living with HIV and advocating for strong, effective HIV policy.  He earned an MS in Nonprofit Management and Organizational Leadership from Walden University, and he also graduated from the UCLA / Johnson and Johnson Health Care Executive Management Program. He is currently pursuing his PhD in Public Policy and Administration.

Will Lay | Patient Services Coordinator

Pronouns: He, Him, His

Will Lay has a professional background in healthcare administration in primary care and mental health services. After leaving the US Army, he earned a B.S. degree in Social Science with a focus on clinical counseling and psychology from Portland State University. Will has lived in the Portland area for 8 years and grew up in Eugene, Oregon. An avid adventurer and outdoorsmen, Will loves traveling all over the world to scuba dive and exploring other cultures and countries. With a strong desire to help others, whether, through social activism or just being a friendly face on the street, Will is always focused on giving 100% of himself to those he serves.

Anthony Unger | CMA

Pronouns: He, Him, His

Anthony is a Nationally Certified Medical Assistant who has worked in healthcare for almost five years. He graduated from Everest College three years ago and has worked primarily in an Urgent Care gaining experience caring for people from many different backgrounds and cultures. Anthony believes strongly in the practice of trauma-informed care and has a specific passion for the LGBTQ+ population and those affected by HIV/AIDS. Both at work and outside of work, he is a strong advocate for those in need and hopes to one day see a world free of stigma. Anthony was born and raised in the Pacific Northwest and when not focusing his time here at Prism, he loves exploring the city and its’ surroundings alongside his husky pup.

Jelan Almanza | CMA

Pronouns: She , Her, Hers

Jelan has been a Certified Medical Assistant for four years. Jelan has worked both in primary care and pediatrics, and she has a long background in customer service. She is passionate about helping others, and as a Spanish speaker, she especially enjoys helping people from different cultures and backgrounds. When Jelan is not working, she spends time with her large family, including her children and dog. In her free time, Jelan enjoys cooking, crafts, going for walks and traveling when she has the chance.