Dedicated to providing midwifery care with an open mind and an open heart.

We are constantly striving to find greater ways to serve women with high-quality, compassionate care, community service, and a passion for learning.

Contact Trillium
(734) 834-5392
1035 Washtenaw
Ypsilanti, MI 48197

Stacia Proefrock, CPM, Owner:

Stacia is the primary midwife and owner of Trillium Birth Services. She came to midwifery after holding a wide range of jobs, from medical researcher to pop music reviewer. After completing her apprenticeship with Trillium founders Sierra Hillebrand and Kerry Lizon, she took over the practice and expanded it to include doula services, fertility services, and classes through Trillium Learning Community. Providing homebirths to women in southeast and south-central Michigan is still one of her strongest areas of focus. Stacia sits on the board of the Michigan Midwives Association and is active in midwifery causes on the local and national level.

We are grateful for our fantastic community. Here are some people we work with closely in our area:


Kate Mazzara, CPM, consulting midwife

Kate provides vital support to Trillium clients as a backup midwife. She brings 12 years of experience with birthing women and their families to her work with our clients. She also brings her extraordinary compassion, likeability, and stamina to help us serve women well. Kate trained in Pennsylvania's Amish country and runs her own midwifery practice in Howell, MI, Mazzara Midwifery.

New Moon Midwifery

Headed up by Amanda Howell, CPM, another great Ann Arbor practice.

Kate Stroud: Massage Therapist

Kate is beloved by many Trillium clients for her skill as a massage therapist and has also helped rehab Stacia after more than a few long births! She is also an incredible doula and childbirth educator, and she can rollerskate too! Kate brings a huge passion to all of the work that she does and gets everyone around her excited about birth. She teaches childbirth classes at our office and runs an independent massage practice as well as running . You can email her for more info about her services.