The World Egg Bank 4202 N. 32nd Street, Suite L, Phoenix, Arizona USA 85018 +1.877.331.2427

For those faced with infertility
The World Egg Bank strives to make building a family a simple reality.

Key Staff Member


Working in fertility for over a decade, and serving as an ART program supervisor for the past seven years, Brian has proved himself to be an expert embryologist. He has extensive experience in all facets of the embryology laboratory, including: ICSI, Day 3 and Day 5 blastocyst embryo development, assisted hatching, vitrification of oocytes and embryos, and PGD. In addition to the technical procedures, Brian is the chief compliance officer and represents Boston IVF with CLIA, CAP, SART, and FDA licensure and inspections. He is highly regarded by these agencies as having successfully guided centers on both coasts to the highest level of recognition and achievement. Brian has been a great asset to TWEB with both his laboratory expertise and his knowledgeable consulting.

Rebecca De La Cruz


Rebecca De La Cruz joined The World Egg Bank in 2009. Rebecca’s prior association with The World Egg Bank was as an egg donor who enjoyed helping families. She is a dedicated member of our team and she is resourceful, organized, creative and efficient. After screening thousands of our egg donors, her goal is to accept the best and ensure that each donor has a very positive experience. She serves as a resource for donors through every step of the screening and donation process. Rebecca interfaces with the Intended Parents, who enjoy regular updates on their donor, and with doctor’s offices across the US to manage donor screening, monitoring, travel, and post-retrieval care. She accommodates special screening requirements nationally and internationally requested of our IP’s doctors. Her knowledge of the donor process is unsurpassed after years of experience with The World Egg Bank.

Caderina Carrizosa


Caderina Carrizosa graduated from Arizona State University with a double major in Mathematics and Biological Sciences. Caderina’s diligent work ethic and friendly, personable approach to clients and vendors makes her an efficient and effective Financial Manager. She also was an egg donor three times prior to her employment with The World Egg Bank and understands the emotional and financial difficulties our Intended Parents often face.

Shannon Crosby


Shannon’s background is in education and her work in the Early Childhood Education for 13 years as a teacher has given her significant background in planning and working within structured time-sensitive management systems. As a member of the school’s management team, she worked with many students in their 20’s to counsel them on career choices. She has exceptional communication skills, organizational and computer skills and human resource management training. Her energy and commitment to serving customers is clearly demonstrated in her relationship with our clients.

Anna Hasselbring


Anna Hasselbring graduated from Northern Arizona University with a double major in Advertising and Public Relations. Anna’s previous work at a marketing firm in Chicago has given her a unique perspective that she now uses to educate and counsel potential egg donors. She also has 6+ years in child care and customer service giving her exceptional people skills. Anna’s outgoing, caring personality along with her passion regarding egg donation allows her to connect with new donors and guide them through the application process.

Tonya Heilbrun


Tonya Heilbrun graduated from Northern Arizona University with a Bachelor’s degree in Marketing. She is a perfect fit for our company as she has a very unique story of her own. Tonya was one of The World Egg Banks recipients back in 2003 when Diana Thomas (Founder and CEO) was still operating her fresh donor agency, X and Y Consulting. Tonya has amazing twin boys as a result of her donor egg experience. Six short months after the birth of her twins, she “miraculously” became pregnant with her third biological son. Tonya has years of experience in the customer service industry. In 2009 she started a small company with her sister called Use Your Marbles. This was a marble reward system for children that she designed and marketed while staying at home with her boys when they were younger. With Tonya’s personal experience, she has the empathy and compassion needed to assist our clients while going through all the highs and lows of the infertility process.

Gary Harton Ph.D.


Richard C Wagner M.S., C.G.C


Brian LoManto
Ray Lemberg, Ph.D.


Dr. Lemberg’s prolific career and experience over a wide range of psychological fields provides the experience The World Egg Bank requires to ensure its egg donors are well prepared for their egg donation cycle.

Dr. Gabor T. Kovacs


Dr. Jacob F. Mayer, Jr.


Dr. Kuwayama


Dr. Kimball Pomeroy, Ph.D.


Patricia M. McShane, M.D.


Diana Thomas, M.A.