Our Providers

Mandy Wilson McKimmy | DNP, FNP-C, AAHIVS, Medical Director

Pronouns: She/Her/Hers

Mandy Wilson McKimmy is a 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.

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.

Coming September 2020

Dr. Ben Sokoloff | DO

Pronouns: He/Him/His

Ben was born and raised in Detroit, MI and graduated from the NOVA Southeastern University College of Osteopathic Medicine in Fort Lauderdale, FL. He trained in internal medicine at Legacy Emanuel and Legacy Good Samaritan in all aspects of medical care with attention to the needs of the adult LGBT community. While there he led as a PrEP prescribing advocate and was the first physician to begin treating Hepatitis C in the Good Samaritan primary care clinic. He received further training in advanced HIV care, viral hepatitis, and latent tuberculosis from the University of Massachusetts while serving the immigrant population of Worcester, MA. He has assisted in training other providers in the spectrum of HIV care. When he’s not working he can be found hiking or snowboarding the PNW, practicing amateur archery, and travelling the world.

Connie Silverman | DNP, FNP-C, Family Nurse Practitioner

Pronouns: She/Her/Hers

Connie Silverman is a dedicated family nurse practitioner who enjoys working with patients of all ages and backgrounds. She completed her Doctor of Nursing Practice at Oregon Health & Science University (OHSU) and currently teaches at OHSU in the family nurse practitioner program. She believes strongly in the value of preventative care and in working with patients to develop a plan of care that fits their goals. Her clinical interests include LGBTQ+ care, family planning, and addiction medicine. Originally from Minnesota, Connie settled down in the Pacific NW in 2012 and loves spending time exploring the mountains with her family.

Coming September 2020

Rian Johnson | FNP, Family Nurse Practitioner

Pronouns: He/Him/His

Rian Johnson is a transgender-identified family nurse practitioner. He is a passionate advocate for LGBTQ+ health, health equity and community based healthcare. Rian attended OHSU’s Family Nurse Practitioner program and also has a degree in Sociology and Gender Studies from UC Berkeley. He is an advocate for increasing access to healthcare for gender diverse populations by providing gender-affirming care within primary care and reproductive health care settings.  He has authored presentations on “Gender Affirming Hormone Therapy, Initiation and Monitoring and Surgical Management (2019),” “Creating Gender-Affirming Healthcare Environments (2019), and “Contraceptive Counseling and Pregnancy Prevention for Transgender and Gender Diverse Patients (2020).” At OHSU, Rian helped create and teach the Health Equity and Community Organizing course.

Joshua Oppenheim | PA-C, Physician Assistant

Pronouns: He/Him/His

Joshua Oppenheim is a certified Physician Assistant who completed his Masters in Physician Assistant Studies at Pacific University. He has researched and lectured on the knowledge and attitudes of providers as it pertains to standards of care for men who have sex with men, and has further lectured on HIV care and prevention with PrEP. Josh has clinical experience working with LGBTQ+ patients throughout the Pacific Northwest, and enjoys volunteering with youth centered organizations including Camp Erin and the Boys and Girls Club. Josh was born in Central Oregon and loves traveling, trying new foods, and exploring all that the Pacific Northwest has to offer.

Mike Duncan | PsyD

Pronouns: He/They

Mike Duncan is a licensed psychologist who completed his doctoral degree in clinical psychology at Pacific University in Hillsboro, Oregon.  He received his bachelor’s degree in psychology from the University of Colorado at Boulder.  He has a generalist background in mental health working with ages 12 and up, in group, individual, family, and crisis therapy, in community outpatient and residential settings, and with a broad range of diagnoses and treatment needs.  He has performed research regarding sexual minority adolescent risk and protective factors in addition to internalized sexual prejudice and sense of belonging in sexual minorities.  He has lived in the Portland area since 2011 and enjoys jogging, bicycling, and exploring the Pacific Northwest.

 For more information about their approach to mental health practice please click here.

Mattie Boucher | LPC

Pronouns: They/Them/Theirs

Mattie Boucher is a Licensed Professional Counselor who completed their Masters in Clinical Mental Health Counseling at the University of Nevada, Las Vegas. They received their bachelor’s degree in psychology from Southern Utah University. They have experience in community mental health settings, working with wide ranging diagnoses and utilizing multiple treatment modalities depending on the client’s goals. Most recently, Mattie has been working with the LGBTQ+ and HIV+ communities through Cascadia Behavioral Healthcare and Cascade AIDS Project (CAP). They have lived in Portland since 2016 after moving from Las Vegas, and enjoy spending time with their dog and doing puzzles.