Our Practice

Changing lives is a true passion here at Swan Medical. Lead by the best of the best, our commitment to you is as follows:

Meet The Team

Peter Castillo MD, FACOG, FPMRS

Dr Castillo is a Fellowship-trained Female Pelvic Medicine specialist. As founder and director of Swan Medical Intimate Wellness in Los Gatos, CA, he is dedicated to improving common quality of life conditions that affect millions of women.

Dr Castillo completed his OB/GYN residency at St Barnabas Medical Center in NJ then went on to complete a three year Fellowship in Reconstructive Pelvic Surgery and Female Pelvic Medicine at the Cleveland Clinic Foundation. After 5 years of clinical practice at Kaiser Permanente where his duties involved overseeing resident research and education and teaching medical students as Assistant Clinical Professor of Stanford University, Dr Castillo created the first private Intimate Wellness Center in the San Francisco Bay Area. Dr Castillo is actively involved in clinical research and is on several women’s health advisory boards to help shape new emerging therapies and advanced treatment protocols that address commonly experienced conditions that occur as a consequence of childbirth, aging, and menopause that impact intimacy and quality of life.

Dr Castillo aims to optimize health through root-cause treatments for the
common symptoms associated with aging. He is committed to empowering women to embrace their longevity and erase the stigma of Female Sexual Health
through educational events, seminars and compassionate care.

Why We Built Swan Medical

My husband, Dr. Peter Castillo, and I opened our first clinic in Los Gatos.

He is a urogynecologist. I came from design and entrepreneurship. What brought us here was the same thing: too many women were living with symptoms they had been taught not to mention — pain, dryness, exhaustion, a body that no longer felt like their own — and being told this was simply part of getting older.

We called that first clinic the Women’s Pelvic Health Institute. The name was honest. It was also a closed door. Partners of women going through menopause were already part of these conversations. So were men carrying their own intimate health concerns, with nowhere to bring them.

So I rebuilt the identity. Swan Medical.

The crescent in our logo is the feminine, and it is also the C in Castillo. The swan is what I watch happen to people when they finally put their health first.

My work is everything that surrounds the medicine. Dr. Castillo and our clinical team hold the care itself— hormone therapy, menopause, pelvic and intimate wellness, aesthetics. I hold the rest: how the space feels when you walk in, whether you are asked the right questions, whether you leave feeling heard.

Most of this industry talks about treatment. Far fewer people ask why a woman waited so long before making the appointment.

I also founded Zoí Elements, our in-house supplement line. Health made simple: fewer products, clearer reasons.

Today we are in Los Gatos and Danville, and we are preparing to grow further.

If you have been carrying something you have not felt able to say out loud, you can say it here.

Dr. Josephine Doo is a Californian native who is fellowship trained in Urogynecology and Reconstructive Pelvic Surgery. She completed her OB/GYN residency at the University of California, San Diego. She then left her home state for the Midwest to complete her three-year fellowship training at Oklahoma University in Oklahoma City. During her time in Oklahoma, she sought out to complete her Masters in Clinical and Translational Sciences to better bridge the gap in bringing innovative and science-backed change to Women’s Healthcare.

Her research interests in Urogynecology have included optimizing postoperative analgesia after surgeries, imaging of pelvic organ prolapse and vaginal mesh with 3D pelvic ultrasonography, and analyzing associated factors that could contribute to recurrence of pelvic organ prolapse. Her research has been presented at various prestigious conferences, including American Urogynecologic Society (AUGS) and International Urogynecological Association (IUGA). She is excited to bring her research background to help improve understanding and access to Female Sexual Health and Wellness.

Dr. Doo has developed advanced skills in pelvic surgeries, including vaginal, laparoscopic and robotic techniques. She is committed to education and patient care demonstrated by numerous Teaching Awards she received throughout her training. Her dedication to advancing women’s health and her expertise in the field make her a respected leader in her specialty.

Greetings!

I am ecstatic to join Dr. Castillo and his team at Swan Medical. As a UCSF trained Nurse Practitioner I come with years of experience working as a Primary Care Provider (PCP) as well as in acute care and integrative therapy related environments. I have a passion for Functional Medicine which aims to get to the root cause of medical concerns rather than masking them. While working as a PCP I found the area of pelvic health and intimate wellness to be significantly underserved due to lack of accessibility to the most relevant and innovative modalities in this field. I am happy to now work with safe, highly effective groundbreaking technologies available at Swan Medical. Driven by the desire to help and the desire to learn, my aim is to help patients attain their highest health and intimate wellness goals in ways that can enhance and preserve all aspects of life.

My passions outside of the healthcare arena involve growing healthy organic food, surfing in the cold waves of Santa Cruz, snow skiing, and otherwise spending time outdoors with family and friends.

Elizabeth Cooper is an experienced Board Certified Physician Assistant and Dietitian with a career spanning two decades in healthcare. Holding dual Master of Science degrees in Physician Assistant Studies and Nutrition, complemented by a Bachelor of Arts in Biology, she brings a robust academic foundation to her practice.

Prior to her current role at Swan Medical, Elizabeth served as a Physician Assistant at Norcal Urology, specializing in adult urologic care and overseeing complex treatments including intravesical chemotherapy and testosterone replacement therapy. Her work history also includes managing a multidisciplinary team at JumpstartMD, focused on medical weight loss, nutrition education and Bioidentical Hormone Replacement Therapy (BHRT) for men and women.

Elizabeth’s commitment to patient care is underscored by her comprehensive approach to health and her dedication to advancing clinical practices in hormone therapy and urology.

Morgan Becker is a Family Nurse Practitioner with advanced training in aesthetic medicine, dermatologic care, and patient-centered wellness. She is known for her refined aesthetic eye and meticulous technique, helping patients achieve natural, balanced results through personalized treatment plans designed to support both skin health and confidence.

Morgan earned her Master of Science in Nursing, Family Nurse Practitioner and completed her Doctor of Nursing Practice (DNP) with honors from Samuel Merritt University in Oakland, California. She also holds a Master of Science in Healthcare Administration Management and a Bachelor of Science in Health Science from California State University, East Bay.

Her expertise includes neurotoxin injections, dermal fillers, biostimulators, laser treatments including PICO, RF, and CO₂ technologies, microneedling, chemical peels, and medical-grade skincare. Morgan’s approach emphasizes facial harmony, subtle rejuvenation, and long-term skin health.

Prior to joining Swan Medical, she worked as a Registered Nurse at Kaiser Permanente and served as a surgical first assist in the operating room, these experiences strengthened her clinical precision and deep understanding of facial anatomy.

Born and raised in the East Bay, Morgan brings warmth, attentiveness, and honesty to every patient relationship. At Swan Medical, she combines advanced clinical training with an artistic perspective to deliver sophisticated, natural-looking results.

Hello, I’m Janis Wirt, Regional Practice Manager at Swan Medical, where I oversee our locations and work closely with our providers and team to help create a welcoming, supportive, and exceptional experience for every patient who walks through our doors.

I have been part of the Swan Medical family for more than six years, and it has been incredibly rewarding to grow alongside the practice. I began as a Patient Care Coordinator and have had the opportunity to grow into my current role as Regional Practice Manager. What I love most about my work is being part of a team that helps women and men improve their health, quality of life, and confidence.

Before joining healthcare, I spent 20 years in the beauty industry as a hairstylist, licensed cosmetologist, and salon educator. Although it may seem like a very different career, the heart of what I loved about that work has carried with me into healthcare: building relationships, caring for people, and helping them feel comfortable, confident, and cared for.

My passion for healthcare and desire to continue growing professionally led me back to college, and in 2024 I graduated magna cum laude from Purdue University Global with a Bachelor of Science in Healthcare Administration. I am incredibly proud of that accomplishment and grateful to have been able to apply what I learned while continuing to grow with Swan Medical.

One of my favorite parts of being at Swan is seeing the relationships our providers and team build with our patients. Patients often come to us with concerns that can be very personal and difficult to talk about, and I am proud to be part of a practice where they are treated with compassion, respect, and genuine care. Seeing someone leave feeling heard, supported, and hopeful is incredibly meaningful to me.

Outside of work, I love spending time with my husband and daughter, reading with my book club, practicing yoga, Lagree and Pilates, walking my dog, and enjoying time outdoors with family and friends.

I am so proud of how Swan Medical has grown over the years and feel fortunate to be part of a team that truly cares about the patients we serve. I look forward to continuing to help make Swan a place where every patient feels welcomed, supported, and well cared for.

Hello, I’m Jessica Regalado, Assistant Manager at Swan Medical’s Los Gatos office. I’ve been part of the Swan Medical family since 2021, and my favorite part of my work is the people. I love getting to know our patients, hearing their stories, and helping them feel comfortable from the moment they walk through our doors. Whether I’m sharing patient education, helping plan a memorable event, or making someone’s day a little easier, I enjoy bringing creativity, warmth, and a little personality to everything I do.

Before joining Swan Medical, I spent 20 years in the beauty industry as a Salon Manager, Hairstylist, and Salon Educator. That experience taught me the importance of listening, building trust, and helping people feel confident in themselves. Those values continue to guide how I support our patients, and I’m grateful to work alongside providers who share that same dedication.

My passion for connection has also inspired me to pursue studies to become a Sexologist. My goal is to help patients feel more confident talking about improving pleasure, expressing their needs, and navigating intimacy. I know these conversations can feel personal and sometimes intimidating. As I continue my education, I look forward to offering a warm, approachable space where patients feel heard, supported, and comfortable being themselves.

Hi I’m Alex, I am one of the Patient Care Coordinators. I am happy to be a part of the Swan Medical family. With over 5 years of customer service experience in the healthcare industry, I am passionate about providing the best customer service and patient experience. Dr. Castillo’s work is incredible and I feel incredibly lucky to gain so much insight and knowledge on hormonal health and intimate wellness.

Outside of work, I love to travel with my husband. I am also passionate about health and fitness and enjoy working out, going on hikes with my dog, and spending time with my close friends and family.

I look forward to continuing to learn and getting to know all of you!

With over 20 years of customer service experience, I bring a strong passion for creating positive experiences and building genuine relationships with those I serve. My career began in luxury retail, where I developed a deep appreciation for personalized service, attention to detail, and the importance of making every individual feel valued and cared for.

Throughout my career, I have carried these principles into every role, approaching each interaction with professionalism, empathy, and a commitment to excellence. I enjoy connecting with people, understanding their needs, and helping create an environment where they feel comfortable, respected, and supported.

I am excited to bring my experience and people-focused approach to Swan Medical and to be part of a team dedicated to providing an exceptional experience for every patient. Outside of work, I enjoy spending quality time with my fiancé, son, and daughter. I also enjoy attending Bay Area sporting events and making lasting memories with my family. My family is my greatest source of joy and inspiration.

Hi! My name is Callie. I am originally from Boulder, CO and I attended UCSC where I earned a B.S. in the biomedical concentration of Global and Community Health. I’m currently pre-PA with a strong passion for women’s health. I’m excited to continue learning, growing my knowledge, and eventually pursue a career where I can make a meaningful impact in the field of women’s health care. While working at Swan Medical, I have really enjoyed learning about the different hormones in the body and the important roles that they play throughout the various stages of our lives. One fact about me is that I love to read in the mornings with my coffee!

Hello, hello! My name is Alyssah, a medical assistant here at Swan Medical in Los Gatos. I hold a Bachelor’s of Science degree in Biopsychology with a minor in Applied Psychology from the University of California, Santa Barbara.

As an aspiring Physician Assistant, I am so ecstatic to be a part of the Swan Team! Day after day, there is always something new to be learned and, of course, people to help. I am truly so privileged and grateful to be a part of your health journey.

When I’m not working or dying my hair different colors, you can find me reconnecting with nature, exploring new places, and smiling at every dog I come across. Please tell yours I said hi!

Hi Everyone! My name is Alicia and I am very excited to be a part of the Swan Medical team. I graduated from the University of Washington, where I studied Biochemistry and Global Health. I love doing clinical research and patient care, and hope to eventually use both of these interests to provide meaningful healthcare to under-researched and underserved communities. This has been exciting to see at Swan, where novel research and treatments in longevity and women’s healthcare are being implemented by the providers in office. Fun fact about me is that I can wiggle my ears, a trait that I inherited from early ancestors who needed muscles to move their ears and listen for food and predators. But it also works as a good party trick!

Hello! My name is Erica, and I am a Medical Assistant at Swan Medical. I grew up in Toronto, Canada, and moved to the Bay Area 14 years ago. I graduated from UC Santa Cruz with a B.S. in Human Biology and am currently pursuing my goal of becoming a Physician Assistant. I am passionate about providing care to underserved and rural communities and have gained meaningful experience working with these populations. Working at Swan Medical has shown me patient-centered care, equity, and the opportunity to meet the best patients! Outside of work, I am a certified yoga instructor and enjoy teaching piano to young children and dancing in my free time!

Hello! My name is Lipi, and I’m a medical assistant here at Swan Medical. I’m originally from Dublin, California; and recently graduated from UC Davis with a B.S in Clinical Nutrition and a minor in English! Here at Swan, I’ve learned so much about being a patient advocate, expanding access to health and wellness spaces, and breaking long-standing stigmas in Women’s Health and Care. I hope someday to work in pediatric medicine; and as I apply to Physician Assistant school, I know the opportunity to connect with our amazing patients will be invaluable in shaping me into the provider I hope to become. Outside of healthcare, I am passionate about everything music (I am certified as an Indian Classical vocalist and I play acoustic and electric guitar!), spend too much time in bookstores, and am an extremely amateur latte-artist in my own home. 

Hello! My name is Ella, and I am one of the medical assistants at Swan Medical. I grew up in Lafayette, graduated from UCLA in the spring with a B.S. in Human Biology and Society, and am currently applying to medical school. Throughout college, I developed a deep love for women’s health and am interested in pursuing OB/GYN, which has only grown throughout my time at Swan. I have adored supporting and advocating for women and helping ensure they get the care they need to better their lives, and it has been delightful meeting and serving women from all over Northern California. A fun fact about me is that I was a sports journalist at UCLA and got to travel around the country to cover women’s gymnastics, including Olympic gold medalist Jordan Chiles. Outside of work, I love baking, yoga, and discovering new matcha spots throughout the Bay.

Our Office