About us

Compassionate Care for Lasting Joint Relief

STL Joint Relief was founded to help people of all ages move more comfortably and live with less pain. Joint discomfort can develop at any stage of life, whether from aging, arthritis, injury, inflammation, or everyday wear and tear. When joint pain begins to interfere with your routine, your independence and quality of life can quickly be affected.

STL Joint Relief specializes in non-surgical joint pain treatments designed to reduce inflammation, improve mobility, and restore function. Common symptoms we help treat include stiffness, swelling, limited range of motion, and chronic pain that makes daily activities difficult.

Meet The Team

Derek Lambert – Provider 

Derek Lambert is a board certified provider and a member of the American Academy of Anti Aging. He has been a hormone specialist since 2015 and exclusively treats women in the peri menopause and menopause phase of life. Derek’s approach to treating women’s hormones is very simple… He states, “One size does not fit all when it comes to women and hormones”. Derek’s approach is very individualized with each patient. What brings women into the office is very different from patient to patient. 

Derek takes great pride in identifying what specifically brings each of his patients into the office and works in alleviating those symptoms. Derek has treated many women with his individualized approach using bio identical hormone replacement. There are over 400 functions of estrogen in the body; many of those functions are not objectively noticeable to patients. One of the functions is brain health. Personal experiences with Alzheimer’s and dementia made estrogen replacement in women a passion for Derek. There is a strong link between lack of estrogen and dementia in women. 

Derek likes to sit and talk to his patients and help them understand the importance of hormone replacement therapy. He debunks some of the myths associated with hormone replacement therapy and helps you understand WHY your primary care doctors or OBGYN’s might not check your hormone levels. One of Derek’s favorite quotes is, “There is no need for women to live with hot flashes, night sweats, insomnia, brain fog and irritability! The solution is not putting women on antidepressants, but rather giving them estrogen! As the decline of estrogen is what is CAUSING these symptoms!” 

Derek has authored a book, “Harmony in Hormones: A Comprehensive Guide to Menopause Treatment”; he wrote this book as an educational guide for women going through menopause and experiencing menopause symptoms. In Derek’s free time he likes spending time with his family (wife and 2 daughters), traveling and spending time outdoors. He likes to say, “You get one life… live it!.”

Shelby Rudolph, RN

Clinical Director

Shelby Rudolph is our Clinical Director and a Registered Nurse who has been an integral part of our team since 2019. With extensive knowledge of both patient care and clinic operations, Shelby truly understands the ins and outs of the practice and helps ensure everything runs smoothly behind the scenes. She is known for her friendly, approachable demeanor and her ability to make patients feel comfortable and cared for. Outside of work, Shelby enjoys hiking and staying active, which reflects her passion for overall wellness.

Danielle Frentz

Office Manager

Danielle Frentz has served as our Office Manager since 2019 and plays a key role in keeping our front office organized and efficient. She oversees all administrative operations, including patient scheduling, front-office coordination, and daily workflow management. Danielle is detail-oriented, reliable, and dedicated to creating a seamless experience for both patients and staff. Originally from California, she brings a positive energy and strong organizational skills to our team.

Erin Capellupo, NP

Nurse Practitioner

Erin Capellupo is a Nurse Practitioner who has been with our practice for the past two years. She is highly experienced in weight loss therapy, peptide therapy, and testosterone replacement therapy, and takes a thoughtful, patient-centered approach to care. Erin is known for her down-to-earth personality and her ability to connect easily with patients, making them feel heard and supported. Her compassionate style and clinical expertise make her a favorite among patients.

Rachael Blomberg, RN

Registered Nurse

Rachael Blomberg is a Registered Nurse who has been part of our team for two years. She is well-versed in testosterone replacement therapy, weight loss treatments, and hormone replacement therapy for women. Rachael is known for her calm, steady demeanor and approachable personality—nothing ever seems to rattle her. Patients appreciate her relaxed, reassuring presence and her commitment to providing consistent, high-quality care.

Take the First Step Toward Relief