OUR TEAM
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JEN MARSHALL
Chief of Staff
Jen is our go-to problem solver — you will find her working behind the scenes strategizing and managing our practice growth, coordinating our efforts in research, education, advocacy & outreach, and planning events & communication. Jen spent 20+ years in public service as a researcher and program/project manager.
Personally impacted and inspired by our mission, she pivoted careers in 2024 and is dedicating herself to advancing women’s sexual and menopausal health.
She is a mom to two teenagers and spends her free time volunteering with her local conservation league and cub scout pack, as well as mentoring and coaching early/mid-career women.
COLLEEN FISHER
Executive Assistant
Colleen brings nearly two decades of communications and project management experience — along with 27 years as a nationally recognized fitness instructor and health advocate — to the team. She has supported physicians, health leaders, nonprofits, and corporations with marketing, branding, event coordination, advocacy, fundraising, community building, and digital content development. She also captained an indoor-cycling Cycle for Survival team for 12 years, raising $2.6M for rare-cancer research and earning MSK’s Game Changer Award.
Currently navigating menopause herself, Colleen brings both empathy and humor to the practice’s mission — and believes evidence-based care (and HRT – wink, wink) can make all the difference.
At the practice, she supports daily operations, project flow, and communications, helping ensure every touchpoint reflects the clarity, compassion, and excellence central to Dr. Rubin’s mission. She and her husband live in Chevy Chase, Maryland, and are the proud parents of four sons.
STEFANIE BOERS
Clinical Office Manager
Stefanie brings more than 13 years of nursing and practice management experience across multiple medical specialties to the practice. Known for her clinical expertise, compassionate approach, and collaborative leadership style, she is passionate about creating an exceptional experience for both patients and staff.
At the practice, Stefanie oversees clinical operations, supports our medical assistant team, and helps ensure the systems and workflows behind the scenes run smoothly so patients receive the highest quality care.
Outside of work, she enjoys baking, hiking, photography, and spending time with her two adult daughters. Most recently, she checked skydiving over the Florida Keys off her bucket list!
LILLIAN HARDY
Medical Assistant / Pre-Med Intern
Lillian (Lilly) Hardy is our newest intern for 2026! She graduated from the University of Michigan in May of 2025 and majored in Biology, Health and Society. She spent the last year conducting research at the University of Michigan and is excited to return home to DC and join Dr. Rubin’s team.
Through both her personal and clinical experiences, Lilly has developed a passion for promoting women’s hormonal health. As she applies to medical school, she is looking forward to exploring the intersection between endocrinology and other topics in women’s health.
In her free time, Lilly enjoys singing, reading, and spending time with family and friends.
ALEXANDRA BRUNST
Medical Assistant / Pre-Med Intern
Alexandra (Lexi) is one of our new interns of 2026! She graduated from Dickinson College in 2024, where she studied Chemistry. While at Dickinson, she conducted anthropological research on cervical cancer screenings.
After graduation, Lexi worked as clinical technician in an ICU-stepdown unit at her local hospital for a year and a half. She has gained valuable experiences working with patients in an inpatient
setting.
With this combined background, Lexi became interested in women’s health/advocacy efforts and plans to apply to medical school this year. Lexi is excited to expand her knowledge in
Urology and Sexual Medicine and looks forward to being part of the team!
In her free time, Lexi enjoys spending time with her cat, taking long walks, knitting, baking, and watching murder mysteries.
ANA MARTINO
Medical Assistant / Pre-Med Intern
Ana Martino joined the practice as a 2026 intern after graduating from American University with a degree in Biology, a minor in Dance, and a certificate in pre-medical studies.
As an undergraduate, Ana conducted stem cell research and worked as a medical assistant in podiatry, primary care, and oral surgery clinics in both the Boston area and the DMV. She is excited to gain experience in research and patient care as she prepares to apply to medical school and pursue a career in women's health.
When she's not in the clinic, Ana enjoys gardening, baking, and exploring museums. Between her podiatry experience, years of dance training, and current Marine Corps Marathon preparation, Ana knows a thing or two about staying on her toes, making her a wonderful addition to our team.
REGINA HILL, MD
Clinical Research Coordinator/Curriculum Development Lead
Regina Hill, MD is a clinical research coordinator and curriculum development lead with a background spanning medicine, regulatory affairs, risk management, visual design, and medical education. Originally from Sacramento, California, she earned her medical degree from Ross University School of Medicine in 2026.
At the practice, Regina supports clinical research initiatives and helps develop evidence-based educational resources for patients, clinicians, and learners. She is especially passionate about translating complex medical information into clear, engaging tools that improve understanding, support patient care, and advance sexual medicine education.
Outside of work, Regina enjoys visual design, medical illustration, and creating educational content that makes healthcare more accessible.