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Our Fertility Team

Compassionate Assistance for Growing Families

At our clinic, our caring staff is genuinely dedicated to helping couples achieve their goals of becoming parents. Our commitment to our patients and their families shows in almost everything we do. Our staff takes the time to understand your situation, and we create fertility plans based on what is best for you.

Michelle Bigelman PA-C; MMS

Michelle Bigelman PA-C; MMS - Physician Assistant

Michelle Bigelman brings over 20 years of experience as a Board-Certified Physician Assistant specializing in Women’s Health, Fertility, Obstetrics, and Gynecology. She is passionate about optimizing patient’s lifestyles to help their fertility. She enjoys integrating elements of mind-body connection, nutrition, and stress management into her practice and always focusing on the individual patient and their health and wellbeing goals. Michelle earned her Bachelor of Science degree in Nutrition at University of Georgia, and her Master of Medical Science and Physician Assistant degrees from Midwestern University in Chicago with highest distinction. She is certified by the National Commission on Certification of Physician Assistants.

In addition to practicing medicine, Michelle is a certified yoga instructor. Outside of work, Michelle loves spending time with her three children and husband, wearing out her energetic dog with long walks, practicing yoga, and sipping that first cup of hot coffee in the morning.

Michal Wrotslavsky, PA-C, MPAS, MMS - Physician Assistant

Michal Wrotslavsky is an NCCPA Certified Physician Assistant specializing in Women's Health and Fertility, with a background in Adult Primary Care. She is passionate about helping her patients achieve their fertility goals, through incorporating a comprehensive medical approach combined with an overall health and nutrition outlook. Michal earned her Master of Medical Science and Physician Assistant Studies degree from Nova Southeastern University and graduated with distinction.

Michal currently resides in South Florida with her husband and their three children. In addition to fertility and medicine, Michal enjoys swimming, strength training, and spending time with her family.

Irina Livschutz

Irina Livschutz, R.N.C - Nurse Manager, IVF Coordinator

Irina has a bachelor’s degree in Nursing Science from DePaul University and an associate degree in Business from Loyola University. In 1986, she assisted with the development of one of the first in-vitro programs in the country, in the Chicago Metropolitan area. In 1989, she participated in the First Study Pilot Nationwide Certification for nurses specializing in Fertility and Reproductive Endocrinology.

Irina is Past President of Infertility Nurse Association of South Florida and is currently on the Advisory Nursing Board for several pharmacies and pharmaceutical companies specializing in fertility. Irina makes presentations and conducts round table discussions at the Annual Nursing Fertility Meetings.

Irina joined Palm Beach Fertility Center in 1999. She coordinates IVF cycles and ensures each cycle is optimized for pregnancy. Together with Dr. Denker, Irina strives to maintain our reputation as the best and the most patient-friendly program in Florida.

Eliza Roberts - Practice Manager, Financial Counselor

Eliza Roberts - Practice Manager, Financial Counselor

As the Practice Manager, Eliza has been contributing to the success of Palm Beach Fertility Center since 2007. In addition to her role as Practice Manager, she is a Certified Medical Assistant and maintains her knowledge by attending fertility conferences throughout the year. She is also the Administrative Liaison on the Florida Society of Reproductive Endocrinology and Infertility Board of Directors. She works closely with Dr. Mark Denker to ensure patients receive the best care.

She is your go-to person who "makes it happen." Eliza recognizes that financial considerations are very important to our patients. Understanding insurance benefits and obtaining the necessary referrals or authorizations can be cumbersome, confusing, and frustrating. This is why Eliza is always furthering her education to bring new and informative information to you and Palm Beach Fertility Center.
Eliza is available to explain the costs of fertility treatment and to make it as stress-free as possible. She strives to find new, affordable, and personalized treatment plans for each patient.

Portrait of Brenda La Rosa - Aventura Office Manager

Brenda La Rosa, Aventura Office Manager

Brenda joined Aventura Fertility & IVF in 2020 as the office manager. She coordinates insurance verification, authorizations as well as financial consultations. Brenda has worked in the administrative field since 2018 and has made it a personal goal of hers to make each patient’s visits as smooth and as stress-free as possible. Brenda attends Florida International University pursuing a Bachelor of Arts in International Business Administration.

Blanca I. Duque

Blanca I. Duque, TS/ALT/MT (ABB) - Laboratory Supervisor, Embryologist, Andrologist

Blanca has been working as an embryologist/andrologist since 1996, and she joined Palm Beach Fertility Center in 2005. Passionate about learning, Blanca completed a Masters in Endocrinology and Techniques of Assisted Reproduction IVI in Valencia, Spain.

She is proficient in all aspects of embryology, including:

  • Embryo biopsy for PGT (Preimplantation Genetic Testing)
  • Embryo and oocyte freezing and thawing
  • Intracytoplasmic sperm injection (ICSI)
  • INVOCELL
  • Culture Semen analysis and freezing
  • Preparation of sperm for IUI, TESA and MESA

Certified as a medical technologist with the American Association of Bioanalysts (MT AAB), Blanca is also a technologist supervisor with the American Board of Bioanalysts (TS ABB). She is licensed in Florida as a laboratory supervisor and holds membership in the American Society for Reproductive Medicine (ASRM). Blanca has contributed to medical publications in Colombia, Spain, and Germany. Fluent in English and Spanish, Blanca enjoys reading, swimming, and walking. She is also a Reiki Master and Energy Healer since 2000.

Estrella Rosemberg, MSc, ELD, TS (ABB)

Estrella Rosemberg, MSc, ELD, TS (ABB) - Laboratory Supervisor, Embryologist, Andrologist

Estrella joined Palm Beach Fertility Center Embryologist team in 2015. She received her Master’s Degree in Physiology of Reproduction at Cornell University, New York City in 1984. She also did a fellowship in the Valencian Infertility Institute (IVI). Since that time, Estrella has been working as an Embryologist, Lab Director, IVF lab Consultant in all basic and advanced IVF techniques including micromanipulation, embryo grading and vitrification of oocytes, ovarian tissue, and embryos. She has extensive experience with andrology lab work, sperm preparation for IUI, sperm DNA fragmentation, and sperm bank management.

She is an expert in embryology staff training, laboratory management, and quality control. She has also participated in numerous international IVF conferences as a panelist and presenter.

She wrote 2 chapters in the book Embryo and Oocyte Cryopreservation. Estrella serves as the Supervisor Representative to The American Association of Bioanalysis Southern Regional Board of Governors. Estrella is licensed in Florida as Laboratory Supervisor in Embryology and Andrology. Licensed Embryology Laboratory Director (ELD) and Technical Supervisor of Andrology and Embryology (TS) by the American Board of Bioanalysis, and a Member of the American Society of Reproductive Medicine. (ASRM)

Bianca Combe, MT/ALS - (AAB)

Bianca Combe, MT/ALS - (AAB) - Medical Technologist, Andrology Laboratory Scientist

Bianca is a certified Medical Technologist and a certified Andrology Laboratory Scientist with the American Association of Bioanalysts MT/ALS (AAB). Licensed by the State of Florida Department of Health Division of Quality Assurance, Bianca is a Clinical Laboratory Technologist as well as an Associate Member Section of the American Association of Bioanalysts. In 2019, Bianca graduated with a Bachelor of Science in Biology from Florida Memorial University and began training as an Andrology Laboratory Technician. Proficient in all aspects of Andrology including: Semen Analysis, Semen Cryopreservation and sperm preparation for Intrauterine Insemination (IUI). With her growing love and passion for Assisted Reproductive Technology, Bianca is now a graduate student at Eastern Virginia Medical School, pursuing a Master's Degree in Reproductive Clinical Science. Upon graduating, Bianca strives to begin training as an Embryologist, making more family's dreams come true. Bianca is fluent in Spanish and English and enjoys spending her free time traveling and spending time with family.

Kari Ratty - Patient Care Coordinator

Kari Ratty - IVF Coordinator

Kari graduated from Keiser University of West Palm Beach with an Associate Degree in Medical Assisting. In 2009, Kari was introduced to Dr. Mark Denker and Palm Beach Fertility Center through her externship with Keiser University. Due to Kari’s work ethics and outgoing personality, we were thrilled to take her on as a permanent member of our team at the clinic.

Kari is responsible for assisting Dr. Denker during exams and procedures, as well as medication injection teaching and phlebotomy. She works closely with our patients to help them with the emotional highs and lows of fertility struggles. Kari is a mother of 2, and wants to help others experience the joy of having a family of their own.

Jessica Villano - Administrative Assistant

Jessica Villano - Assistant Practice Manager, Specimen Transport Coordinator.

Jessica joined Palm Beach Fertility Center in 2016. She coordinates authorizations, referrals, surgery scheduling, financial consults, and transfers for specimens. Jessica loves to be challenged with opportunities to learn and grow.
She anticipates patient needs by understanding how fertility treatments can be difficult and stressful. With her compassionate, professional service and infectious enthusiasm, Jessica strives to exceed patients’ expectations.

Lisa K. Perdue

Dr. Lisa K. Perdue - Acupuncturist

Dr. Lisa K. Perdue is a Japanese American Acupuncturist. She holds board certifications from the National Certification Commission for Acupuncture and Oriental Medicine, Kiiko Matsumoto Style Japanese Acupuncture Practitioner, Certified Laser Provider, and Medical Qigong Practitioner. Since 2000, Dr. Lisa has treated a wide range of medical and health concerns with advanced training in fertility, autoimmune disease, PTSD, pain management, sports-specific injuries, women’s health, and laser therapy. She is one of the few practitioners integrating laser technology for fertility, along with reproductive medicine.

Angela Maple - Marketing and Outreach Manager

Angela Maple - Marketing and Outreach Manager

Angela started working with Palm Beach Fertility Center in 2010. Angela's role encompasses reaching out to the OB/GYN physicians and their staff. She coordinates Educational Seminars, Staff Luncheons, and Physician Dinners.

When Angela visits OB/GYN offices, she provides educational information to ensure excellent medical communication and care. Angela spreads the word about all the great things happening at the Palm Beach Fertility Center through social media on Instagram, Facebook, Twitter, YouTube, and on our website. Angela is married and has two sons. She loves working with Dr. Denker and the team because of the "family culture" at Palm Beach Fertility Center.

Ksenia Korovyakovskaya - Aventura Digital Marketing

Ksenia Korovyakovskaya - Aventura Digital Marketing

Ksenia is our Digital Marketing expert for Aventura Fertility & IVF. She currently specializes in medical marketing. Ksenia has experience in digital marketing strategy, vendor relations, strategic planning, execution and promotions. She develops relationships with the local OB GYN doctors and other professional and business groups. She increases our digital footprint & web visibility in the Miami- Dade & Southern Broward counties.

Benjamin Sessions, PhD, HCLD, ELD, TS, CC

Benjamin Sessions, PhD, HCLD, ELD, TS, CC – Embryology Laboratory Director

Dr. Sessions earned his BS in Biology and Chemistry in 1999 and obtained his MS (2004) and PhD (2012) in Animal Science from Utah State University. After completion of his PhD, and prior to beginning his career in human embryology, Dr. Sessions worked as a Research Assistant Professor in the Department of Animal, Dairy, and Veterinary Sciences at Utah State University.

Dr. Sessions is board certified as a High Complexity Laboratory Director by The American Board of Bioanalysis (ABB) and is a licensed Florida Clinical Laboratory Director in Embryology. Dr. Sessions joined Palm Beach Fertility Center as the Off-Site Embryology Laboratory Director in November 2021.

Katie Gimler, RNC

Katie Gimler, RNC - IVF Coordinator

Katie graduated from the University of Wisconsin- Milwaukee with dual degrees in Biology and Nursing. She began her nursing career in Labor & Delivery. Shortly after she moved to Los Angeles where she worked for 13 years at Cedars Sinai Medical Center earning the President Award for exceptional nursing care. Katie maintains specialty certifications in Labor & Delivery and Ambulatory Nursing.

Katie found her passion in infertility 11 years ago as she was also a patient struggling to conceive. She is committed to helping patients through the process by education, compassion, understanding, and support. She is very excited to be a new member of the Palm Beach Fertility team working to make parenting dreams come true.

Fertility Care as
Unique as Your DNA

Anyone trying to conceive without success knows that infertility can consume your life. Dr. Mark Denker, M.D., R.E., and the compassionate team at Palm Beach Fertility Center understand that nothing matters more to you than building a family. We devote ourselves to helping resolve infertility with individualized care that produces optimal results.

About Palm Beach Fertility