Who We Are
We are Hospitalists uniquely qualified to deliver the best possible outcome to chronically ill patients.
Advinity trains its providers to deliver intensive geriatric and adult care to effectively manage a plan or group’s most complex patients. As a hospitalist group, our outcomes are achieved through a multi-disciplinary approach. Advinity leads the management of your patients, ensuring that our hospitalists, care coordinators, and transitional care staff engage and communicate with your primary care physicians, specialists, social workers, and case/disease managers. Advinity becomes the advocate for your patients.
Committed to provide high-quality, high-value, concierge-level care and compassion to all patients during their most vulnerable time. Build open and honest relationships through proper communication and coordination with the focus and discipline to improve quality of care every day.
Foster a culture where the patient’s best interests are aligned with the payors’ and providers’, restoring healthcare to it’s original purpose.
Dr. Alyn Casal-Fernandez
CHIEF EXECUTIVE OFFICER, MD, MPH
Dr. Alyn Casal-Fernandez is the Chief Executive Officer of advinity. Her outstanding leadership, integrity, and compassion for her team have played a key role in her success today. Originally from Miami, Florida, her interest in medicine developed at a very young age. At the age of 13, her grandfather was diagnosed with sublingual cancer and she immediately made it her duty to be his primary wound care provider. A process unbearable to most, was productive and useful to her. She quotes, “This experience engraved in my mind that I would become a Physician no matter what it took”.
Dr. Alyn Casal-Fernandez graduated from Florida International University, and received her Doctor of Medicine from Iberoamerican University, Santo Domingo. She then returned to Miami to complete her General Surgery Residency Program at The University of Miami Miller School of Medicine. Her studies did not stop there, as she obtained her Master’s in Public Health from NOVA Southeastern, Ft. Lauderdale shortly after.
The journey in becoming both a medical professional, and an Executive leader have given her true fulfillment to be able to implement changes in practice that positively affect thousands of patients. “I most enjoy working with the great team I have around me. We give each other the push and support we need to continuously improve our patients lives every day”. Besides being an inspiration to the business community, Dr. Alyn Casal-Fernandez is a woman of many talents. She is bilingual in English and Spanish, and was a professional tap dancer on Broadway from age 17 to 19. Spending time with her family is what is most important to her, and she loves watching her two sons play baseball.
Dr. Vishnu Reddy
CHIEF MEDICAL OFFICER, MD, PROGRAM DIRECTOR
Dr. Vishnu Reddy is the Chief Medical Officer of advinity LLC. His admiration for practice of medicine and patient care developed at a young age. He was not only drawn to the nobility of the profession, but had several family members in India that were physicians and surgeons, including his father who practiced Rural Medicine. His impressive array of accomplishments, consideration for others, and determination to make a difference highly reflect the influential leader he has become today.
He completed both Medical School and Residency in the Department of Internal Medicine at the University of Texas, Houston. His academic excellence and leadership led him to take on roles such as President and Chief of the Department of Medicine for Christus Spohn Health System in Corpus Christi and Care Regional Medical Center. Dr. Vishnu Reddy has been a recipient to multiple awards throughout his distinguished career. He was recognized by the House Resolution of the 83rd Legislative session of the Texas House of Representatives in April 2013, received the Healing Hero Award, and was runner up for Best Doctor Award by Reader’s Choice. He has been the Chief Medical Officer of advinity for three years and enjoys being a part of the continuum of care with a patient centered focus.
The many years of experience as an accredited Doctor has given him a true sense of fulfillment and purpose when caring for those in need. He has had the opportunity to participate in the Healing Ministry of Jesus Christ which has greatly added value to his career. Dr. Reddy is married with one son, and enjoys spending time with his family, travelling, and is a car fanatic. Advinity has been greatly impacted by the skills, and extensive knowledge he brings to our team.
Meet Our Doctors
Dr. Veena Reddy
Dr. Veena Reddy is the Medical Director for advinity Hospitalist group in Corpus Christi, Texas. Originally from India, she always loved the role of being a healer and was greatly influenced by the admiration her father received while practicing medicine. Her medical education started at one of the most premier institutes in the Hills of Manipal, India. After moving to the United States, she resided in New Jersey to start her Residency at Morristown Memorial Hospital. After being there for two years, she relocated to Texas, and finished as Resident Physician in the Department of Internal Medicine at the University of Texas Medical School in Houston.
Through leadership and dedication, Dr. Veena Reddy has been recognized for her excellence on multiple occasions. In 2009, she was a recipient to the Healing Hero award at Christus Spohn Health System in Corpus Christi, she was acknowledged as Physician champion in 2016, and is now Medical Director for advinity, and a huge asset to our team. She has been a Hospitalist for three years, and not only enjoys that advinity is a patient centered practice, but also that she is able to partake in a career that defines and fulfills her and her family’s life.
Besides practicing medicine, she loves organizing, researching and planning trips to take with her family. She speaks English, Telugu, Urdu, and Hindi, and has likes collecting stamps from all over the world.
Dr. Crystal Garza
Dr. Crystal Garza is a Hospitalist in Corpus Christi, Texas. She graduated from the University of Texas-Pan American in Edinburg, with a Bachelor of Science in Biology. She then resided in Galveston Texas to complete her Doctor of Medicine in 2010, and partook in the Christus Spohn Memorial Family Medicine Residency Program in Corpus Christi until 2013; she was recognized as Chief Resident during this time.
This was only the beginning of her noteworthy career. She was granted multiple awards by both patients and staff for her excellent care and commitment to patients. In 2014, she was presented with the Healing Hero Certificate, and was also Physician Champion of the Month. It’s no secret that both her peers and patients enjoy her hard work and pleasant service. When Dr. Garza is not helping patients, she enjoys relaxing outdoor activities such as going to the park with her dog, leisurely bike riding, and photography. She loves spending as much time with her family and friends as possible and can fluently speak English and Spanish.
Dr. Bennie Berkvens
Dr. Bennie Berkvens is a Hospitalist for advinity in Corpus Christi, Texas. He was born and raised in the Netherlands and moved to Texas in 1992. As a young boy, received treatment in the hospital and always looked up to the surgeons and physicians that personally helped him. This drove him to pursue a career in the medical field.
In 2007, he graduated from Tarleton State University, TX, with a Bachelors in Biomedical Sciences. He then attended The University of Texas Health Science Center in San Antonio, where he completed his Medical Degree in 2012. After finishing Medical School, Dr. Bennie Berkvens moved to Corpus Christi, to finish the Christus Spohn Family Medicine Residency Program in 2015. Apart from being a talented physician, he can fluently speak three different languages: English, Dutch and Spanish. We are excited to have him as part of the advinity hospitalist team.
Dr. Eric Madarang
Dr. Eric Madarang was born and raised in the western Pacific Ocean in Guam. His interest in a career in the medical field was inclined by physicians that treated his grandmother when she was ill. He knew that he wanted to have that same influential impact on others. In 2004, he graduated from the University of Washington, Seattle with a Cell and Molecular Biology degree. He then attended Medical School at Western University of Health Sciences, CA, and was an Internal Medicine Resident at Bay Area Medical Center.
His medical journey has been very rewarding so far. Dr. Madarang enjoys getting to know patients on a personal level, and having the power to treat them the way he would want to be treated. When he is not seeing patients, some of hobbies are precision rifle shooting, and spending time with his two younger brothers.
Dr. Laura McNamara
Dr. Laura McNamara is from Houston, Texas. Growing up with a mother that was a full time Psycho Therapist, she was constantly exposed to the health care field and decided that going into medicine would be the most efficient medical route to pursue. Establishing a presence in the medical community was very important to her. In 2003, as part of the Christian Medical Association, she took a mission trip to provide health care information to indigent populations in and around Saltillo, Mexico. She helped translate to other students and physicians.
In 2005, she completed her Doctor of Osteopathic Medicine at Texas College of Osteopathic Medicine in Ft. Worth, TX. Not only did she engage in her own studies, but she thoroughly enjoyed teaching and helping others as well; she tutored medical students that were struggling in various science courses. Shortly after, she became Family Practice Resident at Corpus Christi Medical Center, where she cared for patients in both private hospitals and clinical settings. Some of her skills and expertise were emphasized in continuity of care for ambulatory patients, management of patients in medical ICU, emergency departments, cardiac telemetry unit and many more. She was also Resident Council Representative in 2008.
Dr. Laura McNamara has been a Hospitalist since 2010. She quotes, “I enjoy working for advinity because of the continuity of holistic care with each patient. I am able to build trust and connections with my patients, while watching them get better. I love my family and my job, and I value being able to watch them both grow at the same time”.
Dr. Randy Pearce
Dr. Randy Pearce was born and raised in Fort Worth, Texas. When his grandmother fell ill when he was young, he greatly idolized the Physicians that took care of her and knew that he wanted to do the same. In 2006, he received his Bachelor of Science in Biology from Baylor University, TX where he was awarded Pre-Medical Student of the Year, and the Provost Academic Scholarship. He then moved to Bradenton, Florida to complete his Doctor of Osteopathic Medicine at Lake Erie College in 2010, which later lead to a Master of Science in Medicinal Education in 2014. He has received multiple academic excellence awards for his outstanding performance.
He was an Internal Medicine Resident at Corpus Christi Medical Center in Texas and has been a full time Hospitalist with advinity in Corpus Christi since he finished in July 2017. He quotes, “I enjoy interacting with patients and families to try and improve their medical care. It has allowed me to help others and treat serious disease processes”. He enjoys the great outdoors and in his spare time likes to golf, fish, and go camping. Other hobbies include learning about military history, drawing, and playing the guitar.
Dr. Ruben Pedraza
Dr. Ruben Pedraza is native to Corpus Christi, Texas. He knew that pursuing a medical profession was what he aspired to do because he liked to service and help others. He started his medical studies at Texas A&M University, where he completed both a Bachelor degree in Biology in 2003, and his Doctor of Medicine at the Health Science Center College in 2008. From there, he finished his Residency program at Corpus Christi Family Medicine in 2011. During his time there, he remained as active in the medical community as possible, joining the Infection control committee, Pharmacy and Therapeutics Committee, and the Professional Review Committee.
After years of experience working as a Hospitalist, Dr. Ruben Pedraza joined the advinity team in 2014. He enjoys being part of a team that focuses on attention to patient needs, and feels as though his career is truly life fulfilling. In his spare time, he enjoys outdoor activities such as: fishing, hunting, biking, sports, and kayaking. He is also bilingual in English and Spanish.
Dr. Shane Perkins
Dr. Shane Perkins, originally from Fort Worth, Texas, knew from a young age that he wanted to become a Physician. As a child, he would “doctor” his parents with band aids for fun and was able to recognize just how fulfilling it was to help. Both his mother and father were huge inspirational characters to him by constantly instilling the importance of education to achieve your dreams.
In 2005, Dr. Shane Perkins graduated from Texas Christian University in Fort Worth, Texas with a dual Bachelor’s degree in Psychology and Chemistry. He was the first one in his immediate family to go to college. From there he resided in Erie, Pennsylvania where he received his Doctor of Osteopathic Medicine from Lake Erie College. During this time, he was not only studious, but maintained an active presence in the medical community as Cofounder and President of Evidence Based Medicine Club at LECOM. After living in Pennsylvania for Medical School, he decided to return to his Texas roots to complete Residency at Corpus Christi Medical Center.
Hunting, fishing, and travel are just a few of Dr. Shane Perkins hobbies. He has been a part of the advinity Hospitalist team since he finished residency in July 2017. He quotes, “I absolutely love my position with advinity; working with my fellow Hospitalists and staff is a joy. I consider myself truly blessed to be where I am today and help people in all walks of life and in all capacities. I generally just love being part of a great team.”
Dr. Anthony Turner
Dr. Anthony Turner is the Medical Director in Jacksonville, Florida. His commitment to patient care, business leadership skills, and the ability to facilitate daily operations have made him the notable doctor and business professional that he is today. In 2000, he received his Bachelor of Science in Biology from Xavier University of Louisiana, New Orleans. From there, he completed his Doctor of Medicine in 2005 at Morehouse School of Medicine in Atlanta, Georgia, and his residency in Internal Medicine at Baptist Hospital Nashville, Tennessee in 2008.
After completing residency, Dr. Turner began his career as a Hospitalist in 2009, and has since worked his way up to Medical Director of advinity where he has held this role for the past two years. He enjoys being active on both the clinical and business side of operations, and is grateful to have earned a highly respected job in the medical field. Helping people in their most dire needs, and being able to see the impact it has on patients makes his career very valuable to him.
Not only is Dr. Turner active in the medical community, he likes to give back and work with the youth. He currently volunteers with a pro basketball developmental league as a mentor and coach; he thoroughly enjoys this since he was a talented college athlete himself. Traveling, learning about history, and embracing different cultures are just a few of his other interests.
Dr. Sayed Ahmed
Dr. Sayed Ahmed was born and raised in Bangladesh, India. His close relationship with his grandfather, a former practicing Physician, greatly influenced his decision to pursue a career path in medicine; It was also a very sought out profession in Bangladesh. In 1987, he received a Bachelor of Medicine and Bachelor of Surgery from Mymensingh Medical College, where he was awarded a Medical College Merit Scholarship for his outstanding academic performance.
In 1991, Dr. Sayed Ahmed moved to the United States and completed his residency in the department of Internal Medicine and fellowship in Hematology and Oncology at North Shore Hospital in New York. He started his Hospitalist career in 2005 at St. Dominic Hospital in Jackson, Mississippi, and ran multiple HIV clinics in the rural surrounding areas during this time.
Dr. Sayed Ahmed joined the advinity Hospitalist team in 2012, working mostly in St. Vincent hospital in Jacksonville, Florida. Hard work and devotion are his motto, and becoming a doctor has allowed him the ability to treat people with the proper care he believes they deserve. He feels blessed that he is here in the United States, and is happily married with one daughter. In his spare time, he likes to golf, watch tournaments, and garden with his wife.
Dr. Bushra Akhter
Dr. Bushra Akhter, originally from Bangladesh, India has lived in the Unites States since 1994. Her calling to service and help people at a young age developed her desire to become a doctor. She completed her Bachelor of Medicine and Bachelor of Surgery from Mymensingh Medical College, Bangladesh in 1988 where she was awarded a Medical Merit Scholarship for her honorary accomplishments.
After moving to the United States, she became Resident Physician in the Department of Family Practice at the University of Mississippi. Once she completed residency, Dr. Bushra Akhter began her career as a Hospitalist in 2006 where she has worked in multiple hospitals in Florida, prominently in the Jacksonville/ St. Augustine areas.
She is happily married with one daughter who is currently attending the University of Chicago. Gardening is her passion as she loves to grow her own herbs and pot flowers around the house. She also enjoys traveling and spending quality time with her family. She is a recent addition to the advinity Hospitalist team and is excited to bring her expertise and passion to our patients.
Dr. Rachael Sanchez
Dr. Rachael Sanchez is a Florida native from St. Petersburg. Growing up she greatly admired her father, a distinguished doctor that would do anything for his family. She knew it in her heart that she wanted to follow in her father’s footsteps and reflect the same care to others for a living since he had saved her own life on multiple occasions.
In 2008 Dr. Rachael Sanchez graduated from Lake Erie College of Osteopathic Medicine in Bradenton, Florida. Shortly after, she participated in a transitional internship at the Portsmouth Naval Medical Center, where she then became the General Medical Officer for the United States Navy in Mayport, Florida until 2012. After serving our country, she moved back to St. Petersburg to complete her Family Practice Residency from St. Petersburg General Hospital in 2015.
Dr. Rachael Sanchez has been recognized for her leadership excellence on multiple occasions by both trainers and administrative staff. She received a Patient Satisfaction Award in 2011, as well as positive comments from numerous patient surveys. She quotes, “I am humbled to get to provide care for a living, it’s what I enjoy doing”. Along with being notable in the medical field, she loves to stay active both physically and in her community. She participated in the USTA Tennis League, loves to dance, and volunteered with Brooks Rehab with the wheelchair tennis program in Jacksonville, Florida. We have been blessed to have her as a part of the advinity Hospitalist team since 2015.
Dr. Robert Penrod
Dr. Penrod was born in Michigan and has lived in multiple cities all over the country throughout his life. His interest in medicine developed because of his longing to help others. He completed a Bachelor of Science in Medicine and Doctor of Medicine (M.D.) from St. George’s University in Grenada, a beautiful island in the southern Caribbean. After completing medical school, he moved to Harrisburg, Pennsylvania where he finished as an Internal Medicine Resident at Pinnacle Health Hospital in June 2017. His hard work and dedication show through the many publications he was recognized for during this time.
Dr. Robert Penrod stated that his medical journey has taught him just how life fulfilling and rewarding being a Doctor can be. He has been with the advinity Hospitalist team since August 2017. Besides dedicating his time to medicine, he has a passion for a wide variety of outdoor activities ranging from hockey, golf, skiing and snowboarding.
Dr. Jahanvi Bhemreddy
Dr. Jahanvi Bheemreddy was born and raised in India, and always looked up to those who worked in the medical field. She couldn’t imagine not being a Doctor, and truly believes it was what she was made to do. She attended Kakatiya Medical College in Warangal to complete her Bachelor of Medicine and Surgery. Not only did she focus a vast amount of time on her studies, but remained active in her community as a Medical Student Volunteer where she organized blood donation camps, and eye camps for cataract diagnosis and treatment. She decided to further her medical education in Darby, Pennsylvania, where she was Resident Physician at Mercy Catholic Medical Center.
Her career as a Hospitalist started around 8 years ago, and she has been a part of the advinity team for a year. Dr. Bheemreddy loves seeing patients and being able to really spend time and give them the proper care they need. She says, “I love the managed care aspect of advinity. I am able to maintain effective communication with Primary Care Practitioners, and have the proper tools available to avoid readmission's”. In her spare time, she enjoys hosting gatherings and cooking for friends and family. She is married and has a daughter.
Dr. Diego Valencia
Dr. Diego Valencia was born and raised in El Salvador, Central America. Having multiple Physicians in the family, along with the motivation to positively impact the lives of others, influenced his decision in becoming a doctor. He attended The University of Dr. Jose Matias Delgado Faculty of Health Sciences in Santa Tecla, El Salvador, where he was awarded the Laboratories Lopez Scholarship for his excellent academic performance. he not only took interest in his own studies, but enjoyed helping others as well. After completing his degree, Dr. Diego Valencia spent time as a Clinical Instructor for Medical Students, where he could assist those pursuing the same dream to become doctor.
In 2009, he moved to Connecticut to complete his Internal Medicine Residency at Yale University, in Norwalk hospital. Passion and hard work were reflected in his leadership as he was appointed Chief Medical Resident from 2012-2013, and Physician of the month.
Dr. Diego Valencia loves spending time with his family, and is married with two children. Watching sports and cheering on his favorite basketball team, the San Antonio Spurs is one of his many hobbies, along with listening to music. He has been a Hospitalist with advinity since October 2016, and we are honored to have him as part of the team.
Dr. James Liu
Dr. James Liu was born and raised in Sarnia, Ontario Canada. Being someone who enjoys challenge and high reward, becoming a Physician was the perfect avenue to help those in need. He stated, “Every day is not only unexpected, but challenging as well”. In 2009, he graduated with honors in Bio Medical Engineering at The University of Houston, Texas. After completing his undergraduate degree, Dr. James Liu stayed in Texas to complete both medical school and residency. He completed his Doctor of Osteopathic Medicine (D.O.) at The University of North Texas Health Science Center and was later Resident Physician at Corpus Christi Medical Center until July 2017.
After meeting many influential figures during his residency, Dr. James Liu said that the characteristics he learned and valued from all of them include intelligence, humility, and the unselfish drive to provide better care. Besides his passion for medical studies, exploring his new home in San Antonio and staying active are just a few of his hobbies. He loves spending time with friends and family, especially with a growing troop of nieces and nephews. We are excited to welcome him to the advinity Hospitalist team.
“The years of studying, shadowing, and being supervised by medical education has made it extremely fulfilling to finally be able to help people by myself. I am constantly reminded that despite all this education, many of my patients have years if not decades more of experiences and knowledge from which I can learn from. Being able to practice medicine my own way, with a focus of patient autonomy has taught me that although everyone may have different opinions it does not mean one is better than the other.” – Dr. James Liu
Dr. Vinh Nguyen
Dr. Vinh Nguyen, originally from Long An Province, Vietnam, has always enjoyed science and medicine while growing up. His interest to treat patients started with his volunteer work in an emergency department and at the Osteopathic Center for Children and families. Through each volunteer experience, he saw just how unique medicine is, and the vital role doctors play to improve patient health. This was the kick start to his medical career. Besides hands on experience in the field, his parents have been a huge inspiration to him. He states, “They are hardworking, generous, caring people who raised me to be the person I am today”.
Dr. Vinh Nguyen completed his undergraduate degree in Biochemistry/Chemistry at the University of California, San Diego. In 2014, he received his Doctor of Osteopathic Medicine at Touro University in Henderson, Nevada. He then moved to Corpus Christi, Texas where he completed his Internal Medicine Residency at the University of North Texas Health Science Center in June 2017 and was recognized for many presentations at American College of Osteopathic Internist.
As a young professional, and new addition to the advinity Hospitalist team, Dr. Vinh Nguyen stated he has many things to be thankful for, “I am a part of a team of wonderful health professionals that do our best to care for all of our patients and make them happy”. Some of his many hobbies include building model airplanes, enjoying varieties of food, staying active, and watching sports such as baseball, basketball, and football.