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We strive to provide you with the best possible care, and that begins with our team. We consider ourselves to be a family at RMA Long Island IVF, as many of us have worked together for over 30 years. Our physicians and staff understand that building a family can be a challenging journey. In fact, some of them have been patients of RMA Long Island IVF themselves! Consistently recognized as Best Doctors in New York and Top Doctors on Long Island, our physicians are truly devoted to helping you start your family.

Dr. Beth McAvey is a Board Certified Reproductive Endocrinologist and Fertility Specialist who has earned the respect and admiration of her patients and her colleagues for her compassionate care and her clinical expertise. Prior to joining RMA of New York in 2015, Dr. McAvey treated infertile couples at the Albert Einstein College of Medicine and Montefiore Medical Center’s Institute for Reproductive Medicine and Health. She is currently on the faculty at the Icahn School of Medicine at Mount Sinai, where she is actively involved in educating residents and medical school students, as well as treating patients for infertility, providing assisted reproductive technologies and minimally-invasive gynecological surgery, and performing egg freezing for both medical and social indications. Dr. McAvey is board certified in obstetrics and gynecology and is a fellow of the American College of Obstetricians and Gynecologists. She is also a member of both the American Society for Reproductive Medicine and the Society of Reproductive Endocrinology and Infertility. 

After graduating with honors from Syracuse University, Dr. McAvey earned a graduate degree in Reproductive Biology, graduating summa cum laude from Johns Hopkins University. She then earned her medical degree from the State University of New York Downstate Medical Center. Dr. McAvey completed her residency training in obstetrics and gynecology at the New York Presbyterian Hospital, Weill Cornell Medical Center and went on to complete her subspecialty training in Reproductive Endocrinology and Infertility at Montefiore Medical Center. 

Dr. McAvey is the recipient of numerous awards, including the Distinguished House Staff Award from New York Presbyterian Hospital, Weill Cornell Medical Center as well as an award for surgical excellence in the field of gynecology from the American Association of Gynecologic Laparoscopists. She is also recognized as a 2018 New York Super Doctor and 2019 Castle Connolly Top Doctor.

Daniel Kenigsberg, MD is a board certified reproductive endocrinologist. He completed his residency in gynecology and obstetrics at Johns Hopkins Hospital in Baltimore and his fellowship in reproductive endocrinology at the National Institutes of Health in Bethesda, Maryland. Dr. Kenigsberg then became the director of reproductive endocrinology at the State University of New York, Stony Brook. His studies in ovulation induction and ovarian physiology have won national awards. He left SUNY at Stony Brook in 1988 to co-found RMA Long Island IVF. Dr. Kenigsberg has also authored "The Baby Solution," a step-by-step guide to overcoming infertility.

"We live in an age when we are approaching almost limitless possibilities in the treatment of medical disorders. Infertility is one such condition. Over the past three decades, remarkable developments in medical, surgical, and laboratory techniques have resulted in the growth of a subspecialty devoted to treatment of infertility. I have been fortunate to be able to practice that medicine during this exciting era. The entire team of embryologists, nurses, and doctors feel a common bond with our patients during their treatment as well as after they have left us as newly started families."

This Provider's Patient Satisfaction Ratings

Friendliness and Courtesy: 95.1
Concern for Worries: 94.5
Confidence in Provider: 94.5
Likelihood of Recommending: 93.9
Office Staff Teamwork: 95.6

Scores are based on patients surveyed by Press Ganey in 2018.



David Kreiner, MD graduated with AOA honors from SUNY Downstate in 1981 with aspirations to start an IVF program on Long Island. That dream became a reality when—upon completion of his fellowship and a year as assistant professor at the Jones Institute in Norfolk, VA—he joined Dr. Kenigsberg to found RMA Long Island IVF and achieved the first successful IVF east of the East River in 1988. Over the years, Dr. Kreiner has won two national awards for infertility research, was a finalist for the top research award from the American Society for Reproductive Medicine for his work on endometriosis, and was granted the Teddy Roosevelt Award at JT Mather Memorial Hospital and the Family Building Award from the American Fertility Association for his efforts with maximizing success while minimizing risk with IVF. In 2017, after studying Traditional Chinese Medicine for two years, Dr. Kreiner became the first REI in the Northeast to become certified in medical acupuncture, offering Long Island IVF patients acupuncture on site at the time of their embryo transfer. His professional goal of assisting his patients is summarized by the title of his book he authored, “Journey to the Crib.”

"I was deeply influenced by some of my earliest patients' experiences with high-order multiple pregnancies and births. As a husband and father, I strongly believe my role as a physician is to facilitate conception for my patients in the most medically safe and economically efficient way possible."

This Provider's Patient Satisfaction Ratings

Friendliness and Courtesy: 93.0
Concern for Worries: 90.7
Confidence in Provider: 94.1
Likelihood of Recommending: 94.5
Office Staff Teamwork: 94.1

Scores are based on patients surveyed by Press Ganey in 2018.


Department of Obstetrics and Gynecology of the Hofstra North Shore – LIJ School of Medicine. Dr. Brenner has received national recognition for his continued dedication to the training of the resident physicians at LIJ. His association with RMA Long Island IVF has helped enable it to maintain its pre-eminent position on Long Island.

"Reproductive endocrinology is a challenging, meaningful, and rewarding subspecialty. I regard it as a true privilege to treat patients who suffer from problems with infertility. The rewards, when successful, extend not only to my patients but to their own families who will now be grandparents, aunts and uncles. The impact that I have as a physician not only on all of these individuals, but all of those people who are effected by a child in his or her own future, represents a reward that is indescribable."

This Provider's Patient Satisfaction Ratings

Friendliness and Courtesy: 98.0
Concern for Worries: 97.4
Confidence in Provider: 97.4
Likelihood of Recommending: 96.7
Office Staff Teamwork: 96.7

Scores are based on patients surveyed by Press Ganey in 2018.


Joseph Peña, MD joined East Coast Fertility, the practice which would become RMA Long Island IVF, in 2004. He received his medical degree from the New York University School of Medicine and completed his residency in Obstetrics and Gynecology at Pennsylvania Hospital in Philadelphia, the oldest hospital in the United States. Dr. Peña then completed his fellowship in Reproductive Endocrinology and Infertility at the prestigious Columbia University College of Physicians and Surgeons, where he stayed on as an Assistant Professor at the Center for Women’s Reproductive Care. He currently holds an appointment as a Clinical Assistant Professor of Obstetrics & Gynecology at the New York College of Osteopathic Medicine. Dr. Peña is board certified in Obstetrics and Gynecology and Reproductive Endocrinology/Infertility and has numerous publications in peer-reviewed journals. Dr. Peña is a member of the American Society for Reproductive Medicine, the Society for Reproductive Endocrinology and Infertility, the American Congress of Obstetricians & Gynecologists, and the Obstetrical and Gynecological Society of Suffolk County. Dr. Peña has been named annually to Castle Connolly's Top Doctors™ and the New York Super Doctors® lists over the past several years.

"In college I contracted Guillain-Barré Syndrome, a paralyzing autoimmune disorder. After six weeks in ICU and then a year-long rehabilitation, I realized that I was drawn to the field of medicine. Having been a patient myself, I know the importance of having a caring and competent physician."

This Provider's Patient Satisfaction Ratings

Friendliness and Courtesy: 94.8
Concern for Worries: 92.2
Confidence in Provider: 94.6
Likelihood of Recommending: 93.8
Office Staff Teamwork: 93.1

Scores are based on patients surveyed by Press Ganey in 2018.


Michael Zinger, MD received an MD with special distinction for research in reproductive endocrinology at the Albert Einstein College of Medicine of Yeshiva University. Dr. Zinger completed residency in obstetrics and gynecology at North Shore University Hospital in Manhasset, followed by fellowship in reproductive endocrinology and infertility at the University of Cincinnati under Dr. Robert Rebar, Director of the American Society for Reproductive Medicine. In 2002, Dr. Zinger was awarded the Senior Fellows Award for outstanding research by the Endocrine Society. He headed the IVF program at Edward Hospital for six years before joining East Coast Fertility. Dr. Zinger is board certified in reproductive endocrinology and infertility as well as in obstetrics and gynecology.

This Provider's Patient Satisfaction Ratings

Friendliness and Courtesy: 96.4
Concern for Worries: 95.7
Confidence in Provider: 95.7
Likelihood of Recommending: 94.8
Office Staff Teamwork: 96.6

Scores are based on patients surveyed by Press Ganey in 2018.


In addition to being a male reproductive specialist at RMA Long Island IVF, Yefim R. Sheynkin, MD, FACS, is also an associate clinical professor of urology and director of male infertility and microsurgery at Stony Brook University Medical Center. Trained in urology at Maimonides Medical Center in Brooklyn, he continued his education as a fellow at the Center for Male Reproductive Medicine and Microsurgery at the New York Hospital-Cornell Medical Center. Dr. Sheynkin has unique experience and years of expertise in reproductive medicine, microsurgical treatment of male infertility, and sperm retrieval techniques for in vitro fertilization.

Dr. Sheynkin has authored and co-authored book excerpts and numerous peer reviewed scientific articles about male infertility in the national and international journals including Journal of Urology, Fertility and Sterility, Urology, and Human Reproduction. Dr. Sheynkin is board certified by the American Board of Urology and is a member of numerous medical professional societies. His other clinical interests include male sexual dysfunction and testis-sparing treatment of testicular cancer.

Sharon Hoey, RPAC, has been a member of the RMA Long Island IVF family since 2007. She completed Master’s Degree in Natural Science at University of New York at Buffalo, then went on to pursue Bachelor’s Degree in Physician Assistant at University of New York at Stony Brook. She is most often seen working with Dr Kenigsberg at the Stony Brook office, but also works at the Melville office. Sharon is a “fan favorite” amongst patients due to her years of experience and pleasant demeanor. When not helping patients grow their families, she enjoys rafting and beekeeping.
Lorraine Karagannis, NP has been practicing as a women's healthcare nurse practitioner since 1988. She joined this practice in 1991, bringing with her a wealth of experience in reproductive endocrinology. Lorraine has been a member of the American Society of Reproductive Medicine since 2013 and is certified by the NCC in Women's Health. Lorraine's dedication to making patients feel at ease and at home makes her especially popular with the patients in our Melville office. When she is not at work, Lorraine enjoys antiquing, refinishing furniture, gardening, and spending time with family and pets.

Gail Nee, NP has dedicated over 20 years of her nursing career to serving IVF patients on Long Island with compassion and understanding. Before joining the team at RMA Long Island IVF, Gail completed her Masters at Stony Brook University School of Nursing and worked as a Nurse Practitioner at Long Island IVF. Gail has a special interest in preimplantation genetic testing and typically works with patients seeking treatment for embryo screening for genetic diseases at the Melville location. According to Dr. Kreiner, Gail’s patients love her for her ability to listen and offer advice. When not at work, Gail enjoys traveling and spending time with her family and pets.

Megan Katz, PA has been a valued member of the RMA Long Island IVF team since 2014. After completing her studies at the University of Colorado, she completed her PA training at Stony Brook University. Megan has a passion for making sure that patients are educated and informed about the procedures they will undergo. Megan can most often be found at the Melville office. In her spare time, she enjoys traveling with her family. Megan is currently accepting new patients.
Before joining the team at RMA Long Island IVF in 2019, Olga Reid, NP, worked as a Nurse Practitioner at RMA of New York. She earned her NP Masters from Stony Brook University School of Nursing in 1992. Currently, Olga works closely with Dr. McAvey at the Garden City location. She has a special interest in IVF and assists in all aspects of monitoring for IVF procedures. “My favorite thing about my job is seeing the joy in patients eyes when they find out they’re expecting,” says Olga. When not working, Olga enjoys traveling and community service/volunteerism. She is currently accepting new patients.