Meet the Global Elite Physician Team


Tarek Hafez Youssef, M.D., FAAPAnesthesiologist
Tarek Hafez Youssef, MD, FAAP, specializes in Pediatric and General Anesthesiology.

Dr. Youssef is board certified in anesthesiology and pediatric anesthesiology. His special interest is pediatric anesthesiology, where he performed his Fellowship at Children’s Hospital in Los Angeles, California. He finished his residencies in Anesthesia and pediatrics at the University of California, Los Angeles, UCLA Medical Center.

Dr. Youssef is a Fellow of the American Academy of Pediatrics and the American Society of Anesthesiologists and a member of the International Anesthesia Research Society and Society for Pediatric Anesthesia. He is part of the well-recognized group Anesthesia Resources, LTD who have been serving the Greater Phoenix Community since 1988.


Dr. James Geiger, MDAnesthesiologist
Dr. Geiger has been an anesthesiologist since 1986. He graduated from the University of San Francisco and worked in a San Francisco hospital doing cardiac anesthesia for his father who is a retired cardiothoracic surgeon.

Dr. Geiger has also been an aromatherapist since 2004 and it was in the hospital’s recovery rooms where he first noticed nurses using essential oils and aromatherapy to prevent and treat post-operative nausea. The diligent doctor was intrigued and began studying the scientific literature on the subject. He soon recognized that sciences, such as anatomy, physiology and the chemistry applications of aromatherapy, were similar to anesthesia. He was determined to figure out how to integrate aromatherapy safely into his life and the lives of others, including his operating room patients.

Much of Dr. Geiger’s time is spent doing anesthesia, serving on committees and giving lectures and webinars on the safe use of essential oils in hospitals and surgical centers to improve patient care. Currently, he is on staff at several medical centers, orthopedic hospitals and surgical centers, where he has introduced therapy with essential oils into the operating and recovery

Foot and Ankle Surgeon

Dr. Aprajita Nakra, DPM, FACFASFoot and Ankle Surgeon

Dr. Aprajita Nakra is board certified in reconstructive ankle and foot surgery by the American Board of Podiatric Surgery. She is also a fellow of the American College of Foot and Ankle Surgeons. She successfully finished a surgical residency program at Emory Hospital in Atlanta and began practicing podiatric medicine and surgery in Arizona in 2000. In 2004, Dr. Nakra founded Advanced Ankle and Foot specializing in reconstructive foot & ankle medicine and surgery located in Gilbert, AZ. Besides private practice, Dr. Nakra has authored chapters in ankle and foot surgery text books and in medical journals.

She has also been listed in Phoenix’s Best Docs List and was named as an editor of “McGlamry’s Comprehensive Textbook of Foot and Ankle Surgery, 4th edition.” Most recently, Dr. Nakra was selected as the newest Residency Director of St. Johns Episcopal Hospital New York – AZ Division. Always an innovator and trailblazer in medicine, Dr. Nakra just participated in the first Reddit AMA (Ask Me Anything), assisting fellow “redditors” with general questions about medicine and her accomplishments in foot and ankle medicine.

Gallbladders and Hernia, General Surgeon

Susan Cortesi, MD, FACSGallbladders and Hernia, General Surgeon

Dr. Cortesi is an Arizona native, born and raised in Wickenburg. After graduating Cum Laude from Arizona State University undergraduate program she studied at the University of Arizona, College of Medicine. Practicing in the Southeast Valley for more than 20 years her areas of expertise are laparoscopy and hernia repairs. Over the years integrative approaches have become an increasingly important part of the practice.


Liz Cruz, M.D.Gallbladders and Hernia, General Surgeon
In 2004, after her fellowship in Gastroenterology, Dr. Cruz moved to Peoria, Arizona to join the Arizona Medical Clinic. She served as a full-time gastroenterologist in both the outpatient and inpatient settings doing the full range of general gastroenterology including endoscopic procedures, as well as hepatology. In January 2007, she opened the doors to her own practice, Dr. Liz Cruz Partners in Digestive Health in Phoenix.

In 2010, Dr. Cruz along with her life partner, Tina Nunziato, a certified holistic nutritionist, began offering the Dr. Liz Cruz Wellness Program to educate patients on the very things that were causing their digestive issues. Patients were eliminating their digestive issues through detoxification, digestive restoration, nutrition and proper hydration, thus the “DNA for Digestive Health” three-step program was born. It was soon followed by the online community to make it easier for her patients’ to change their digestive health for good through education, camaraderie and support.


Tina NunziatoGallbladders and Hernia, General Surgeon
Tina Nunziato graduated from the Arizona State University College of Business Honors Program in 1996 with a Bachelor of Science in Marketing. After graduation Ms. Nunziato took a job as a Marketing Analyst for a local telecommunications vendor, now Lucent Technologies. She quickly moved out of market research and into business development as a Marketing Specialist where she worked on various new product and joint venture initiatives.

In late 1999, during the dot-com boom, Ms. Nunziato moved to San Francisco to start a web-based software company. Focused on the park and recreation market, the company went through many strategy iterations before it found its niche. In her role as COO and eventually CEO, Ms. Nunziato experienced all facets of business from raising capital and product design to selling, training and supporting customers.

In May of 2003, subsequent to selling her company to one of the industry competitors, Ms. Nunziato came back to her roots here in the valley. She accepted a position as the Director of Marketing with Carefx Corporation a healthcare software company in Scottsdale.

In 2007 Ms. Nunziato decided to try her hand in medicine when she started Dr. Liz Cruz Partners in Digestive Health with her life and business partner Dr. Liz Cruz. Ms. Nunziato and Dr. Cruz decided to take medicine one step further by offering a wellness program through their office. In conjunction with and to support this business Ms. Nunziato went back to school to receive her Certificate in Holistic Nutrition in 2010. Since then both businesses have been growing as they continue to help patients year after year with their digestive diseases, sluggishness and weight gain.

Otolaryngologist/Head & Neck Surgeon

Raquel Ann Redtfeldt, MD. FAAOAOtolaryngologist/Head & Neck Surgeon
Raquel Redtfeldt, MD is a dedicated, highly-trained, experienced Otolaryngologist/Head & Neck Surgeon. She graduated with honors receiving her Bachelor of Science Degree in Biology from Pepperdine University. She was a dean’s scholar for 4 years at the University of Michigan Medical School where she received her medical doctorate and she went on to complete a rigorous Otolaryngology-Head and Neck Surgery Residency at Case Western Reserve/University Hospital of Cleveland. After her residency, she furthered her surgical training with a skull base/otology/neurotology fellowship at The Otology Group at Vanderbilt. While in private practice, she has continued her education through an educational allergy fellowship and by participating in international medical relief work in Egypt, Nicaragua and a number of locations in the Philippines.

Her practice involves patients of all ages and spans the full depth of otolaryngology including thyroid surgery, sinus surgery, pediatric ENT surgery and major ear surgery for chronic ear disease.

She is pleased to join Global Top Docs in their effort to bring advanced western medical/surgical services to a broader, international patient population.

Reproductive Endocrinology and Fertility

Millie A. Behera M. D.Reproductive Endocrinology and Fertility
Dr. Behera is double board-certified in reproductive endocrinology and obstetrics/ gynecology. With numerous published research papers and international presentations, she has established herself as a leader in the field of fertility. Dr. Behera is an accomplished surgeon, and a member of Honor Health’s Center of Excellence in minimally invasive surgery. She is a frequent expert on national TV shows such as Dr. Oz and The Doctors. Dr. Behera provides a complete range of fertility treatments, including IVF, IUI , PGS/PGD, fertility preservation and egg freezing. She treats patients with PCOS, uterine fibroids, endometriosis, male factor infertility and recurrent pregnancy loss. Her caring nature makes her popular with patients. As a mother of four, she embraces the privilege of motherhood and strives to share that with her patients.

Sleep Medicine Specialist/Internal Medicine

Ruchir P. Patel, M.D., MB BCh, FACPSleep Medicine Specialist/Internal Medicine
Dr. Ruchir P Patel is fellowship trained sleep medicine specialist and double board certified in Sleep Medicine and Internal Medicine. After attending medical school at the Royal College of Surgeons in Ireland, he completed a residency in Internal Medicine at Henry Ford Hospital in Detroit, MI, and then subsequently completed a fellowship training program in Sleep Disorders Medicine at Rush University Medical Center in Chicago, IL with pediatric sleep medicine training at the Ann & Robert H. Lurie Children’s Hospital of Chicago at Northwestern University Medical Center. He has dedicated his career to the appropriate diagnosis and treatment of all sleep disorders and in 2012 found The Insomnia and Sleep Institute of Arizona in Scottsdale, AZ.

He has been practicing full time sleep medicine for the last 5 years and currently remains the only full time sleep medicine specialist in the state of Arizona that has completed a fellowship training program in Sleep Disorders Medicine. He has been listed in the Phoenix Magazine’s Top Docs list and has been chosen to be a speaker for several pharmaceutical companies as well. Much of Dr. Patel’s time is spent practicing sleep medicine, providing sleep medicine education to the medical community and public, and also appearing on several local and national television programs discussing various sleep disorders. He firmly believes that improving one’s quality of sleep is of utmost importance to ensuring longstanding health and well being.


Lauren N. Byrne, MDUrologist
Dr. Lauren N. Byrne is skilled in all aspects of male urology and female urology. Dr. Byrne’s training, family background with cancer and medical illnesses, and experience with challenges resulting from pregnancy allow her to treat patients with empathy and respect for their concerns. She enjoys establishing a connection with patients while ensuring they understand their diagnosis, as patient knowledge is critical to the informed decision making process that surrounds how Dr. Byrne cares for patients.

On a personal level, Dr. Byrne enjoys being active with her family. Prior to having her three young children, Dr. Byrne trained for and competed in a number of races ranging from 5k’s and triathlons to qualifying for and completing the Boston Marathon. She looks forward to resuming training as her children are more independent.


Amit Sahasrabudhe, MDOrthopedic Surgeon
Dr. Amit is one of the team physicians for the Chicago Cubs and Colorado Rockies, and has served as a team physician for the Arizona Cardinals. He is an orthopedic surgeon specializing in sports medicine and fracture care. Board-certified and fellowship-trained in sports medicine and arthroscopic surgery, Dr. Amit enjoys performing arthroscopic procedures of the knee (ACL reconstruction, meniscus repair & transplant, cartilage restoration) and shoulder (rotator cuff repair, labral repair). Additional areas of expertise include surgery for biceps tendon tears and fractures of the clavicle and wrist.