AdventHealth Lake Mary Health Park

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Samuel Bae, MD

General Surgery

Samuel Bae, MD, is a board-certified general surgeon. After graduating from Duke University, Dr. Bae received his medical degree from the University of South Florida. He completed a general surgery internship at Allegheny General Hospital. He went on to finish a general surgery residency at the Cleveland Clinic. Dr. Bae is fluent in English, Korean and medical Spanish.

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Your Scheduling Options

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Viviana Casas-Puig, MD

Urogynecology

Viviana Casas-Puig, MD, FACOG is a board-certified OB/GYN who specializes in Urogynecology. After graduating from the University of Puerto Rico, Dr. Casas-Puig received her medical degree from the Ponce Health Sciences University. She went on to complete an Obstetrics and Gynecology residency at the University of Puerto Rico School of Medicine, where she served as Chief Resident. She then completed a Research Fellowship at the Obstetrics, Gynecology, and Women's Health Institute at the Cleveland Clinic, followed by a 3-year Fellowship in Female Pelvic Medicine and Reconstructive Surgery at the Cleveland Clinic in Cleveland, Ohio. She received extensive training in minimally invasive surgery and performs vaginal, laparoscopic, and robotic-assisted procedures. She is a Fellow of the American College of Obstetricians and Gynecologists and a member of the American Urogynecologic Society. Dr. Casas-Puig is passionate about improving the quality of life of her patients, as well as providing compassionate and individualized high-quality evidence-based medical and surgical care.

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Nathan Deangelis, DO

General Surgery
4.9stars rating (180reviews)

Nathan DeAngelis, DO, is a fellowship-trained surgeon with advanced skills in minimally invasive techniques and substantial experience in robotic-assisted surgical procedures. His small-town upbringing in western Pennsylvania instilled in him a strong understanding of the importance of family and community, and is a central tenet of his philosophy of patient care. An honors graduate of St. Vincent College in Latrobe, PA, he earned his medical degree from the Philadelphia College of Osteopathic Medicine. After completing his residency training at Midwestern University/Chicago College of Medicine, he elected to pursue advanced fellowship training in minimally invasive and bariatric surgery at Johns Hopkins-affiliated hospitals in Baltimore. Dr. DeAngelis’s specialties include anti-reflux surgery, breast biopsies and surgical treatments, cholecystectomy, gastric surgery, laparoscopic hernia repair, thyroid and parathyroid surgery, gastrointestinal surgery, skin cancer surgery and placement of feeding tubes and venous access ports.

Awards & Recognition

Chief Resident General Surgery Chicago COM, Assistant Clinical Professor Florida State College of Medicine, Assistant Clinical Professor Adventist Heath University, C-SATS Certified Expert Surgeon, Graduate of Florida Hospital Physician Leadership Program October 2017, Intuitive Robotic Certified Surgeon and Proctor, Arnold P. Gold Foundation Humanism and Excellence in Teaching Award

Differentiators

Dr. DeAngelis is a general surgeon who enjoys all facets of his work. Whether your situation commands an open or minimally invasive approach, such as laparoscopy or robotic surgery, he will be able to provide you with guidance and the best options that will suit your individual needs. Dr. DeAngelis is part of a team of five general surgeons with an excellent support staff that will make sure you and your loved ones receive the very best care 24 hours a day.

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Walter Hayne, MD

Breast Surgery
4.9stars rating (306reviews)

Walter C. Hayne, MD, is a board-certified general surgeon, who is part of the AdventHealth Medical Group’s breast surgery specialty practice.

A former hospital Chief of Surgery, he brings a wealth of experience, including expert surgical care for breast cancer patients and advanced skills in procedures like skin-sparing mastectomies.

Dr. Hayne began his medical studies at Temple University in Philadelphia. And after graduating summa cum laude, enrolled in the university’s medical program, where he stood out as an award-winning medical student. He then pursued a general surgery residency in New York City.

For more than 20 years, Dr. Hayne has demonstrated award-winning bedside manner and clinical excellence.

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William Huether, MD

General Surgery
4.9stars rating (226reviews)

2024 Top Doctors - General Surgery

William L. Huether III, MD, FACS, is a board-certified general surgeon with special interests in minimally invasive and robotic surgeries including laparoscopic anti-reflux, hernia repair and gallbladder surgery. A proud graduate of the University of South Florida College of Medicine, he received his surgical residency training at the University of Florida's Shands Hospital. Dr. Huether brings his considerable experience in complex laparoscopy procedures to the AdventHealth Medical Group's surgical team with offices in Lake Mary, FL. He is an active member of multiple prestigious medical societies, including but not limited to the American College of Surgeons, the E.R. Woodward Surgical Society, the Society of Laparoendoscopic Surgeons and the Society for Surgeons of the Alimentary Tract. He also serves on the clinical faculty of the Florida State University College of Medicine. Awards & Recognition Fellow American College of Surgeons, Clinical Assistant Professor FSU College of Medicine, Clinical Faculty Adventist University, Director Minimally Invasive Surgery/Robotics, AdventHealth Altamonte Springs Surgery Section Chair, Secretary/Treasurer of Medical Staff, Assistant Chief of Staff, President-Elect Edward Woodward Surgical Society, University of Florida Department of Surgery C-STATS Certified Robotic Expert, Intuitive Robotic Proctor Differentiators Dr. Huether is a minimally invasive surgeon who specializes in robotic and laparoscopic surgery, with special interest in gastroesophageal reflux disease and foregut surgery. He has had the pleasure to care for many people in the Central Florida area as well as surrounding areas since 1999. Our office staff is readily available, and you can reach a board-certified general surgeon 24 hours a day.

*Top Doctors award– compiled by Consumers’ Checkbook research company

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Please call the office or complete the request form for the most up-to-date availability.
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Justin Kelly, MD, FRCS, FEBS

Colon and Rectal Surgery
4.9stars rating (258reviews)

Justin Kelly, MD, FRCS, FEBS is a fellowship-trained colon and rectal surgeon with AdventHealth Medical Group's elite colorectal surgery team in Central Florida. His areas of expertise include the use of minimally invasive technologies in colon and rectal cancer treatment, including TAMIS and laparoscopic surgery. He specializes in the surgical treatment of both Crohn's disease and ulcerative colitis, and is proficient in treating all common anorectal diseases including hemorrhoids, fistulas and rectal bleeding. After completing his medical degree with honors and receiving university national medals in surgery from the College of Surgeons in Dublin, Ireland, he became the first International Fellow in colon and rectal surgery at AdventHealth Medical Group, allowing him to be comprehensively trained on the groundbreaking surgical techniques pioneered by our esteemed specialists.

Awards & Recognition

Dr. Kelly has a long history of outstanding achievement. He earned a full academic scholarship to the Royal College of Surgeons in Ireland, graduating with honors, and received the Sir William Osler Medal for Clinical Excellence from the RCSI James Connolly Memorial Hospital in 2004. Whilst a surgical Fellow in Ireland in 2013, his project was awarded a National Medal for Best Clinical Doctor by the Irish Times.

Differentiators

If you want Rolls Royce treatment for your colorectal issue, come see Dr Kelly.

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Vivek Nagar, MD

Pain Management, Physical Medicine And Rehabilitation
4.9stars rating (437reviews)

Dr. Vivek Nagar is an interventional pain management physician. After graduating from the University of Miami, Dr. Nagar received his medical degree from the University of Miami Miller School of Medicine. He went on to complete his residency in Physical Medicine & Rehabilitation and fellowship in Pain Medicine at Albert Einstein College of Medicine, Montefiore Medical Center in New York. While in training, he was selected by his peers and faculty for the prestigious position of Chief Resident. He then went on to serve as Chief Fellow during his time in fellowship. He has authored textbook chapters in the field of pain medicine and physiatry, and has published peer-reviewed research on interventional pain management

Dr. Nagar’s goal is to create personalized treatment plans for his patients, with an emphasis on improving functional outcomes and quality of life.

Dr. Nagar provides comprehensive care for a wide variety of painful conditions of the spine, nerves, joints and muscles by integrating non-surgical and non-opioid pain-relieving treatments. Dr. Nagar uses precise image guidance to perform various minimally invasive treatments including spine injections and procedures, peripheral nerve blocks, and joint injections. He specializes in neuromodulation, including spinal cord stimulation and dorsal root ganglion stimulation.

Dr. Nagar is fluent in English and Spanish. In his free time, he enjoys volunteering, biking, and playing basketball.

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Chetan K Patel, MD

Spine Surgery
4.8stars rating (584reviews)

2024 Premier Doctors - Spine Surgery

Chetan Patel, MD, is a board-certified orthopedic surgeon and spine specialist who is the Medical Director of AdventHealth Medical Group’s spine health practice in Altamonte Springs. A former Chief of Staff for AdventHealth Altamonte Springs, Dr. Patel is a nationally recognized authority on minimally invasive surgical techniques for stabilizing the spine and resolving neck and back pain. He directs a multidisciplinary team that includes specialists in pain management, physical therapy and nutrition, with an emphasis on the most conservative treatment options that can bring lasting relief to his patients. Dr. Patel’s surgical specialties include minimally invasive fusion; microdiscectomy; laminectomy; spinal stabilization; kyphoplasty; minimally invasive TLIF, XLIF and DLIF surgeries; vertebroplasty; scoliosis correction; corpectomy fusion and more. Dr. Patel earned his medical degree and completed his residency training at the University of Michigan in Ann Arbor and undertook his advanced fellowship training at William Beaumont Hospital in Royal Oak, MI.

*Premier Doctors award – compiled by DataJoe Research

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Christy Walls, APRN

Urology

Christy Walls, APRN, is an advanced practice registered nurse. After graduating from Southwestern Illinois College, Christy received her Bachelor of Science in Nursing from St. Louis University. She went on to complete a Master of Science in Nursing at Chamberlain College of Nursing. Christy is a highly experienced clinician committed to whole-person care of the body, mind, and spirit of every patient.

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Steve Williams, MD

Urology
4.4stars rating (482reviews)

Steven Williams, MD, is a board-certified urologist with fellowship training in minimally invasive robotic urologic procedures and endourology. He specializes in diagnosing and treating patients with kidney stones, urologic cancers, bladder disorders, benign prostatic hyperplasia and prostate cancer. His clinical excellence and research acumen, particularly in the field of urologic oncology, establishes him as a leading provider of urologic care in Central Florida. As part of the highly credentialed urology team at AdventHealth Medical Group, he sees patients in his offices in Altamonte Springs, Apopka and Lake Mary. Dr. William's medical credentials include back-to-back fellowships in urologic oncology and robotics and endourology at the University of Miami and Jackson Memorial Hospital, as well as his dual residencies in general surgery and urology at the Albert Einstein College of Medicine. He earlier completed a urology residency in England and received his medical degree at the University of the West Indies.

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Location Details

Insurances accepted at AdventHealth Lake Mary Health Park

Disclaimer:

The list below is for reference purposes only and is subject to change. Please check with your health plan to confirm that this doctor is included before scheduling an appointment.

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  • AHS MC
  • AdventHealth Advantage Plan
  • Aetna
  • Allegiance
  • Av-Med Commercial
  • Blue Cross Blue Shield
  • Cigna
  • Coventry/First Health
  • Devoted Health Medicare
  • FHHS/AdventHealth
  • Florida Community Care Medicaid
  • Florida HealthCare Plans
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