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Ryan Diederich, M.D.

Dr. Ryan Diederich is a distinguished board-certified plastic surgeon with nearly two decades of experience, specializing in cosmetic surgery.

He is highly sought after for his expertise in breast augmentation, tummy tucks, and transformative mommy makeovers. Known for his exceptional bedside manner and a meticulous eye for aesthetics, Dr. Diederich consistently delivers remarkable results that enhance both beauty and confidence in his patients.

What Sets Dr. Diederich Apart in St. Louis?

At MidAmerica Plastic Surgery, patients often express their appreciation for the warm, family-like atmosphere. Located just across the river from St. Louis in Glen Carbon, IL.

Dr. Diederich’s practice offers a relaxed pace and personalized care, allowing patients to feel more comfortable and supported in their journey. What truly distinguishes Dr. Diederich’s practice is the support of a caring staff of professionals who are informative, accommodating, and responsive to patient requests. Dr. Diederich’s approach reflects this emphasis on personalized care, including:

  • Minimizing patient wait times with prompt appointments
  • Listening attentively and thoroughly addressing patient questions during consultations
  • Limiting new patient consultations to ensure a personalized experience
  • Following up with patients after surgeries to ensure they feel confident and supported

National Leader in the Field

Dr. Diederich is actively involved in advancing the latest surgical techniques, ensuring that his patients benefit from the most current breakthroughs in aesthetic surgery. His commitment to excellence and patient care is reflected in multiple prestigious awards, including:

  • Patients’ Choice Award (2013, 2015, 2016)
  • On-Time Doctor Award (2015, 2016)
  • Compassionate Doctor Recognition (2015, 2016)
  • Top 10 Doctor – Metro Area (2014)

Education & Training

Dr. Diederich earned his medical degree from Southern Illinois University School of Medicine and completed a rigorous 6-year residency in Plastic & Reconstructive Surgery in Springfield, Illinois. His advanced training has enabled him to specialize in both cosmetic and reconstructive surgery.

Certifications & Memberships

  • Certified by the American Board of Plastic Surgery
  • Member of the International Society of Aesthetic Plastic Surgeons (ISAPS)
  • Member of the American Society of Plastic Surgeons (ASPS)
  • Member of The Aesthetic Society
  • Member of the Illinois State Medical Society
  • Member of the St. Louis Area Society of Plastic Surgeons
  • Member of the Madison County Medical Society

Professional Roles & Appointments

  • Former President, Southern Illinois Medical Association
  • Two committee positions with The Aesthetic Society
  • Former Chairman, Department of Surgery at Anderson Hospital

Awards & Recognition

  • Voted “Best of Edwardsville” in Doctor, Cosmetic Surgery, and Customer Service categories
  • Named a Top Doctor by NewBeauty magazine
  • Patients’ Choice Award (2013, 2015, 2016)
  • On-Time Doctor Award (2015, 2016)
  • Compassionate Doctor Recognition (2015, 2016)
  • Top 10 Doctor – Metro Area (2014)
  • Featured in multiple national publications and television appearances
  • Best Surgical Body Shaping Enhancement - Aesthetic Awards 2025 (Finalist)

In The Media

Diederich RS. New Techniques in Plastic Surgery. Southern Illinois Medical Association. Belleville, IL. November 11, 2023.

Diederich RS. Aggressive liposuction and tummy tucks. Fox2. Studio STL. November 4, 2024.

Diederich RS. Surgery after major weight loss. Fox2. Studio STL. July 22, 2024.

Keane GC, Keane AM, Diederich RS, Kennard K, Duncavage EJ, Myckatyn TM. The evaluation of the delayed swollen breast in patients with a history of breast implants. Frontiers in Oncology. July 5, 2023.

Diederich RS. The journey from hospital supported to solo private practice. The Aesthetics Meeting 2023. Miami, FL. April 23, 2023.

Diederich RS. The financial lesson that I wish I’d learned before starting out. Plastic Surgery News. June 2021.

Gilliland, Brett, host “What is the most counterintuitive advice that has helped in your success? Dr. Ryan Diederich”. The Circuit of Success. Podcast audio / video, May 4, 2020. https://www.youtube.com/watch?v=SvIaLCV88Uk

Rubio, Chris, host “Another Perfect Day in Idaho with Dr. Ryan Diederich”. Rubio’s Podcast. Podcast audio, December 11, 2019. https://www.buzzsprout.com/637210/2263706

Dr. Ryan Diederich continues to lead the way in aesthetic surgery, combining his extensive experience with a patient-focused approach that delivers both exceptional care and outstanding results.

Positive Patient Feedback

Patient feedback is often used by prospective patients to gauge the quality of a surgeon. Dr. Diederich is proud of the reviews his past patients have shared online with the following independent websites:

MidAmerica feature on Studio STL program

Areas of Expertise

Dr. Diederich is a specialist whose advanced training benefits patients seeking cosmetic or reconstructive plastic surgery. He can recommend the right procedure for you after an in-depth consultation. Some of the most popular surgical options include:

  • Breast augmentation: Dr. Diederich is known for getting results that look and feel natural.
  • Mommy Makeover: Women can regain their pre-baby bodies by combining cosmetic breast surgery with body contouring procedures.
  • Liposuction: Reduce unwanted fat in the hips, belly, under the chin, and male breasts.
  • Eyelid surgery: Create a rested and refreshed appearance with upper and lower eyelid surgery.