Gary Horowitz , MD

Medical Director (SIRM)
Sher Fertility Clinic - Central Illinois
Gary Horowitz , MD
Awards and Certifications:
  • Board Certified in Reproductive Endocrinology
  • Board Certified in Obstetrics and Gynecology
  • Outstanding Achievement in Resident Teaching – Mt. Sinai Medical School
  • National Faculty Award – ACOG 1995
  • Teacher of the Year Award 1991, 1995, 1996, 1998
  • Retired Air Force Pilot and Staff Surgeon

5401 N. Knoxville Ave. Suite 102
Peoria, IL 61614
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Phone: (309) 689-0411
Fax: (309) 689-0784

Dr. Horowitz is board certified in Ob/Gyn as well as Reproductive Endocrinology and Infertility by the American Board of Obstetrics and Gynecology. He is an outstanding fertility doctor with 36 published peer-reviewed manuscripts to his credit. Dr. Horowitz firmly believes in a patient-centered approach to infertility treatment and focuses on helping his patients feel comfortable and informed. He has delivered over 100 invited lectures at national and international meetings, and recently received the Kermit Krantz award for outstanding contributions to the knowledge of obstetrics and gynecology from the American College of OB/GYN. His current research interests include advanced endoscopic surgery, endometriosis, chronic pelvic pain and Advanced Reproductive Technologies including In Vitro Fertilization (IVF).

He is also a fellow of the American College of Obstetrics and Gynecology and a senior fellow of the Air Force Clinical Surgeons Society. He is a member of the American Society of Reproductive Medicine (ASRM), the Association of Professors of Gynecology and Obstetrics (APGO), the Society of Reproductive Endocrinology and Infertility (SREI), the Society of Reproductive Surgeons (SRS) and the Delta Xi Fraternity. He is a retired lieutenant colonel in the US Air Force and a life long member of the Boy Scouts of America.

Most recently he was at Southern Illinois University School of Medicine as an Associate Professor of Clinical Obstetrics and Gynecology and Chief of the Division of Reproductive Endocrinology and Infertility (REI). Before this, he was an Associate Professor and Director of the Division of REI, Medical Director of the Assisted Reproductive Technologies Program, as well as Residency Program Director in the Department of Obstetrics and Gynecology at the Boonshaft School of Medicine at Wright State University in Dayton, Ohio (2001-06).

Previously, he held the same three positions at the University of Missouri School of Medicine at Columbia (1998-2001). Horowitz was also REI Division Chief, Residency Program Director and Vice-Chair of Obstetrics and Gynecology at the David Grant Medical Center at Travis AFB, CA (1993-98). He was a staff physician at Wilford Hall USAF Medical Center at Lackland AFB, TX (1989-91) and a deployed combat surgeon during Operation Desert Storm.

Dr. Horowitz completed his obstetrics and gynecology residency at Wilford Hall in 1989 and his fellowship in REI at the Mount Sinai Medical Center in New York in 1993. He earned his medical degree from the University of North Carolina in Chapel Hill (1985) and his bachelor’s at the USAF Academy in Colorado Springs (1974).

Born in Aguadilla, Puerto Rico, Dr. Horowitz is a native of New York City and has been married to his wife Karen for over 36 years. They have two children.

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Success Stories

Reese Eleanor

Dear Sher I thought I would share baby pics since you requested them on your facebook site. We had our baby “Reese Eleanor” on September 19, 2012. I tested positive for natural killer cells so I had the lipid treatments at the start of the pregnancy. I tried two IUIs which were unsuccessful. We took … Read more

Maci Ann

This is Maci Ann. She was born May 5th and weighed 4 lbs 7oz and was 17 inches long . We were in the September cycle at SIRM Peoria, IL. We would love to thank Dr. Horowitz and all the staff there. They are all amazing people. ~Megan Coile

Reagan and Ivy

I Just wanted to say Thank You to Dr. Horowitz and everyone at the Peoria Sher Institute for helping us bring these little miracles into our lives.   ~Mindi Morris Mitzelfelt September 2010 Cycle Peoria Sher Institute w/ Dr. Horowitz Born May 23, 2011 at Saint Francis to Kenny and Mindi Mitzelfelt Reagan Mitzelfelt: 7lbs … Read more

Kaylee Therese

Our miracle girl Kaylee was born Oct. 7th, 2011 thanks to Dr. Horowitz & staff in Peoria! I had stage 4 endometriosis & adenomyosis. I had TTC for 12 years. I had surgery in 2006, lost 1/2 of my left ovary from the endo. We did 4 rounds of IUI in Minneapolis which failed, then … Read more

Testimonials

We have our beautiful baby girl, thanks to Dr. Horowitz and everyone at the Peoria , IL office!


The staff at Peoria is the BEST!!!! They helped us through this rollercoaster ride called infertility.


Thanks to Sher Institute in Peoria, I celebrated my first mothers day this year. Thanks to Dr. Sher for being a leading pioneer in infertility. Our baby was born July 31, 2010.


Dr. Horowitz gives you so much hope, hope that you thought was lost. We love him and thank God for him being a part of our journey to a family.


Dr. Horowitz has been informative, patient, kind, understanding, and humorous. Thanks so much for all you’ve done to help us build our family!


Pics of our IVF miracle baby boy taken yesterday at 21 weeks… all thanks to Dr. Horowitz at SIRM-Peoria! Baby boy was being a little shy, but it melted my heart to see his sweet face! We are so blessed and owe it all to the great staff in Peoria!


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