Our Providers

Cascade Women's Health PC  is one of the few remaining independent Gynecology practices in Portland.  All of our doctors have been serving the community, practicing and specializing in gynecology for 25+ years.


The office is small, pleasant and Portland-casual. In this setting,  we aim to provide efficient, respectful care. We are conveniently located in NW Portland across the street from Good Samaritan Hospital.  


Our schedule is set up with accessibility in mind. Our receptionists and medical assistants are long-term members of the clinic and can help you with prompt appointments. They have ready access to our clinicians who can help with refills, suggestions for home care, and answers to your questions.


All of our doctors and staff are fully vaccinated for COVID-19.  


Doctors, left to right: Sally Holtzman, Marguerite Cohen, Beth Riley , Danielle Dion, Carol Suzuki and Lydia Collins.
Schedule via MyHealth Schedule Online with ZocDoc

   Marguerite Cohen, MD

Marguerite Cohen, MD - Cascade Women's Health, PC

Marguerite P. Cohen, MD is board certified in Obstetrics and Gynecology and has a broad range of experience. She has worked in a variety of settings in Portland (solo private practice, HMO, hospital employee and member of a large group) and is happy now to settle into a small, independently owned practice, where she can give patients the time and attention she feels they deserve.  Dr. Cohen is an in-network provider with most major insurance companies. As always, we highly encourage you to always check with your plan to be sure Dr. Cohen, and the other other providers in our office, are in-network with your specific plan.


Originally from San Francisco, Dr. Cohen completed her undergraduate degree at Reed College and earned her Medical Degree from from University Of Southern California School Of Medicine in 1981. She completed residency in Obstetrics and Gynecology at Oregon Health & Science University in 1985.


In addition to her clinical work, Dr. Cohen is an active advocate for women and women's healthcare within the community. She is an active fellow of The American College of Obstetricians and Gynecologists and a member of the Oregon Medical Association and plans to continue her lobbying work in pursuit of improved health outcomes for women.


Outside of work Dr. Cohen wears many hats - mother, wife, dog mother, cat mother, cook, knitter and avid gardener -- with a special love of roses, having many award winning roses in the past many years.  She loves to hike, travel and visit her adult sons in their various life adventures.  

 Lydia Collins, MD

Lydia Collins, MD - Gynecological Care in Portland, OR

Dr. Lydia Collins grew up in Chicago. She graduated with Honors from the University of Chicago and trained at Loyola Stritch School of Medicine & Mt. Sinai Medical Center before moving to Portland in 1989. She has worked in a wide variety of settings including Great Lakes Naval Base, the Navaho Indian Reservation in New Mexico, taught acupuncture in Vietnam and consulted for the World Health Organization in post-NATO-war Kosovo. She was also an assistant professor at OHSU for 8 years.


Dr. Collins loves photography, music and being in nature. She is passionate about her volunteer work in conservation & citizen science for Bird Alliance of Oregon.


Dr. Collins has extensive experience in office procedures including colposcopy, endometrial biopsy, LEEP, and difficult IUD insertions and removals. She manages a full range of gynecological problems but is also happy to provide routine care for her long-time established patients and new patients as well.

Danielle Dion, MD

We  are excited to announce that Dr. Danielle Dion has joined Cascade Women's Health PC as of April 15, 2025!


Danielle Dion, MD (she/her) is a board-certified OB/Gyn who loves taking care of women. Originally from California, Dr. Dion completed her undergraduate studies at Lewis & Clark College in biochemistry, then returned to California for a year to work as a wine chemist. She earned her medical degree from Vanderbilt University in 2003 followed by residency in Obstetrics and Gynecology also at Vanderbilt University. She then returned to Portland and has been practicing in the community since 2007.


Dr. Dion feels passionate about getting to know her patients as individuals and partner with them along their healthcare journey. She knows how important it is to be and feel seen and heard as a patient and strives to provide this experience. Dr. Dion enjoys working with women throughout the stages of their lives and feels comfortable caring for women from their very first encounter with an OB/Gyn --through their needs in menopause and beyond. Dr. Dion feels especially passionate about preventative care and perimenopause/menopause care and is a proud breast cancer survivor. She is married and has two wonderful children. 


Dr. Dion is accepting new and previously established patients. Established patients please complete a records release form before your scheduled appointment so we can pick up where we left off!

Sally Holtzman, MD

Dr. Holtzman works in partnership with the women she cares for to individualize their care, whether

providing counseling and education, offering traditional or complementary medicine recommendations or

performing Gyn office procedures. She believes it is a privilege to guide women through the joys and

challenges of their reproductive life cycles, from adolescence through menopause and beyond. She

strives to empower women to make their own choices about caring for their bodies.


A graduate of Harvard Medical School, where she was President of the Women’s Health Association, she

completed her residency training in San Francisco and subsequently lived and worked on the Navajo

Indian Reservation. She has been practicing in the Portland area since 1997.

An avid reader and wine enthusiast, she also enjoys many outdoor activities with her family, including

hiking, biking, backpacking, snowshoeing and paddle boarding.


Dr. Holtzman is accepting new and previously established patients. Established patients, please complete a records release form before your scheduled appointment. Thank you!

Beth Riley, MD

Beth Riley, MD — Gynecological Care in Portland, OR

Dr. Riley, originally from Pennsylvania, completed her undergraduate studies at Harvard, and earned her Medical Degree from Stanford University in 1992. After completing residency in Obstetrics and Gynecology at University of California San Diego, she settled in Portland. She is Board Certified in Obstetrics and Gynecology, and is a fellow of The American College of Obstetricians and Gynecologists. 


Dr. Riley practiced at Providence Columbia Women's Clinic for eight years, then at Kaiser for over five years. She has also volunteered doing gynecology consults at Outside In Clinic in downtown Portland. She states, “I deeply appreciate the opportunity to care for women through various stages of their lives. I believe it's really important that patients feel comfortable, are involved in their healthcare decisions, and have all their questions answered.” Dr. Riley is married with two children. She is an enthusiastic sports fan, and also enjoys book clubs.


Dr. Riley welcomes new and her established patients.

Carol Suzuki, MD, MPH  

Beth Riley, MD

Beth Riley, MD — Gynecological Care in Portland, OR

Beth Riley, MD originally from Pennsylvania, completed her undergraduate studies at Harvard, and earned her Medical Degree from Stanford University in 1992. After completing residency in Obstetrics and Gynecology at University of California San Diego, she settled in Portland. She is Board Certified in Obstetrics and Gynecology, and is a fellow of The American College of Obstetricians and Gynecologists. Dr. Riley practiced at Providence Columbia Women's Clinic for eight years, then at Kaiser for over five years. She has also olunteered doing gynecology consults at Outside In Clinic in downtown Portland. She states, “I deeply appreciate the opportunity to care for women through various stages of their lives. I believe it's really important that patients feel comfortable, are involved in their healthcare decisions, and have all their questions answered.” Dr. Riley is married with two children. She is an enthusiastic sports fan, and also enjoys book clubs.


Dr. Riley welcomes new and established patients.

 Carol Suzuki, MD, MPH

Dr. Carol Suzuki was born in Pasadena, California and spent most of her childhood in Amherst, Massachusetts. She earned dual bachelor's degrees in Microbiology/Immunology and Social Welfare from the University of California at Berkeley and a Masters of Public Health in the area of Maternal and Child Health from UCLA. in 1996, she obtained her medical doctorate from the University of California at Davis, and in 2000 completed her residency training in Obstetrics and Gynecology at the Oregon Health & Science University. Dr. Suzuki entered private practice in September 2000 and has been board certified in Obstetrics and Gynecology since 2002. Dr. Suzuki performs surgery at Legacy Good Samaritan and Providence St. Vincent Hospitals.


Dr. Suzuki feels privileged to have the opportunity to work with a wide variety of women through all the stages of their lives. She has a strong commitment to helping her patients make choices that are appropriate to their needs and consistent with their desires. To achieve this she feels it is important to understand each patient as an individual and seeks to have patients be active participants in their care.


In her free time, you might find her at the Portland Farmer's Market or at various  activities around town with her family. She is forever grateful for the wonderful (and often challenging) lessons she has learned as a parent, which she utilizes daily in her practice. She loves food to a fault and is fond of running, hiking, swimming, salsa dancing and cooking. She has also been known to dabble in piano and knitting.


Please note: Dr. Suzuki 's schedule is full through the end of 2025 and will be very limited in 2026. She encourages her patients to schedule with Dr. Wentross, Dr. Dion or any of the other providers within our practice.

Sally Wentross, MD

Sally J. Wentross, MD (she/her) is a board-certified OB/GYN dedicated to providing comprehensive and compassionate care to patients through every stage of life. Originally from Michigan, Dr. Wentross earned her undergraduate degree in Spanish from Albion College before serving two years in Ecuador with the Peace Corps. She went on to receive her medical degree from Michigan State University and completed residency in Obstetrics and Gynecology at Oregon Health & Sciences University. She has enjoyed a full scope practice in obstetrics and gynecology and now focuses her practice exclusively on gynecologic care, offering expertise in preventative care, abnormal bleeding, contraceptive counseling, reproductive health and fertility planning, and care across the peri-menopausal and menopausal transition, and enjoys working with women from adolescence through post-menopause.


With a strong focus on offering patient-centered and culturally responsive care, Dr. Wentross is committed to treating the whole person and ensuring that her patients feel truly heard and understood. She strives to create a safe, welcoming space for all and values getting to know her patients and building relationships that empower them to make informed decisions about their health.  


Dr. Wentross is a Menopause Society Certified Practitioner (MSCP) and a fellow in the Pacific Coast Society of Obstetrics and Gynecology. Her recent graduate level coursework in public health focused on population health and healthcare equity. She also participates in the IHI (Institute for Healthcare Improvement) with an emphasis on patient safety and quality of care.


Dr. Wentross’s time in the Peace Corps and her experience serving Portland’s diverse communities inform her inclusive, multicultural approach to care. She is fluent in Spanish and served for ten years as the Medical director at the bilingual Providence Prenatal Care Clinic. . She has also worked closely with Portland’s Somali population and is currently studying both American Sign Language and Arabic, recently completing her second year of coursework in each. She recently traveled with Yakote Women Farmers, a nonprofit working in northern Ghana, where she contributed to a maternal anemia prevention project and initiated infrastructure development at a school for deaf children.


Outside of medicine, Dr. Wentross enjoys cardio dance, yoga, hiking in the beautiful Pacific Northwest, writing, word games, playing and creating music while spending time with family and friends.


Dr. Wentross will initially be serving as a locums doctor -- seeing Dr. Suzuki's established and new patients -- yet also welcomes her own past established patients!

Edna Kung, MD

Edna Kung, MD retired from practice December 31, 2024.


You are most welcome to stay with this practice and schedule with another one of our doctors. Or, if you would like your records transferred to another office, please complete and send us a records release form. Thank you!


Office Staff

Office Staff

Annie, Receptionist

Visiting the doctor can be stressful and as the first face most patients see when they walk through the door, I try to make their visit as welcoming as possible. My goal is to assist patients with whatever they might need in a calm and efficient manner. You’ll primarily find me at the front desk scheduling and checking patients in, but I also assist patients with their medical records and answering the occasional billing or insurance question. 

Liz, Receptionist

Liz, Receptionist — Gynecological Care in Portland, OR

I enjoy being part of the Cascade Women's Health team. I value customer service and strive to make our patient's experience here comfortable and enjoyable. I thrive on the daily challenges of meeting the patient's needs as well as those of the providers. I look forward to meeting and helping those of you in need of our services.

Judy, Registered Medical  Assistant

Judy, Medical Assistant — Gynecological Care in Portland, OR

Patients can meet me in almost any area of the clinic. I spend most days assisting in the exam areas and triaging questions on the phone, but I also help in setting up tests and arranging appointments. My goal is to be an integral part of the healthcare team assisting in patient care; to perform all tasks given with extreme care and professionalism. Since the start of our clinic in 1999, I've enjoyed getting to know our patients and their families. They are the people who make my work worthwhile.


Liz, Receptionist

Liz, Receptionist — Gynecological Care in Portland, OR

I enjoy being part of the Cascade Women's Health team. I value customer service and strive to make our patient's experience here comfortable and enjoyable. I thrive on the daily challenges of meeting the patient's needs as well as those of the providers. I look forward to meeting and helping those of you in need of our services.

Judy, Registered Medical Assistant

Judy, Medical Assistant — Gynecological Care in Portland, OR

Patients can meet me in almost any area of the clinic. I spend most days assisting in the exam areas and triaging questions on the phone, but I also help in setting up tests and arranging appointments. My goal is to be an integral part of the healthcare team assisting in patient care; to perform all tasks given with extreme care and professionalism. Since the start of our clinic in 1999, I've enjoyed getting to know our patients and their families. They are the people who make my work worthwhile.