Our Providers

Llewellyn Lee, MD

Vascular and Interventional Radiologist

Dr. Llewellyn Lee is a board-certified Vascular & interventional Radiologist and the Chief Medical Officer and Director of Interventional Radiology at VasCare. Dr. Lee completed his undergraduate degree at the United States Military Academy at West Point and attended medical school at the Uniformed Services University of the Health Sciences in Bethesda, Maryland. Upon graduation, Dr. Lee completed a transitional internship at Eisenhower Army Medical Center, his residency in Diagnostic Radiology at Madigan Army Medical Center, and a fellowship in Vascular and Interventional Radiology at the Yale University School of Medicine in New Haven, Connecticut.

Dr. Lee served is a retired Colonel in the U.S. Army and served in various roles to include the Chairman of Radiology of community and Army medical centers in Texas and Virginia. Dr. Lee has extensive experience across the full spectrum of Interventional Radiology and is widely recognized as a key opinion leader in venous disease, peripheral arterial disease, end stage renal disease and embolization procedures.

Dr. Lee has helped develop numerous medical devices in use today and he actively consults with the medical device community. He has been treating patients for over 20 years and has successfully performed thousands of procedures.

Memberships and Recognitions:

• Board Certification: American Board of Radiology
• CAQ: American Board of Radiology – Vascular and Interventional Radiology
• Society of Interventional Radiology (SIR): 2007 – Current

Jennifer Mike-Mayer, MD, FACS

Vascular Surgeon

Dr. Jennifer Mike-Mayer is a board-certified Vascular Surgeon at VasCare. She completed her undergraduate degree at Texas A&M University in College Station, Texas and attended medical school at the University of Texas Medical Branch in her hometown of Galveston, Texas. She continued there to complete her internship in General Surgery and residency in Vascular Surgery. Prior to joining VasCare, she was an assistant professor in Vascular Surgery at the University of Texas Medical Branch and assistant program director of the Vascular Surgery residency program. She has the distinguished title of Fellow of the American College of Surgeons. She was recognized as one of Texas Monthly Magazine’s Top Doctors Rising Stars in 2021, 2022, and 2023.

Dr. Mike-Mayer is proficient in a wide range of vascular surgical procedures including treatment of aneurysms, carotid artery disease, end stage renal disease, renal artery disease, venous disease, and peripheral artery disease. She is particularly passionate and adept in peripheral artery disease and limb salvage procedures. During her time in academic practice, she was actively involved in the education of future vascular surgeons and published multiple book chapters and journal articles.

Memberships and Recognitions:

• Board Certification: American Board of Vascular Surgery
• Fellow of American College of surgeons
• Texas Monthly Top Doctors Rising Stars: 2021 – 2023

Charles Gutierrez, MD, FACS

Surgeon

Dr. Charles J. Gutierrez is a board-certified general surgeon and fellow of the American College of Surgeons. Dr. Gutierrez received his Doctor of Medicine from the University of California, Los Angeles School of Medicine in 1994.

Dr. Gutierrez completed his surgery residency at Huntington Memorial Hospital-USC in Pasadena, California in 2000 and has been in private practice since being recruited to Texas in 2000. He retired as an Army Reservist in 2012. During the course of his career, Dr. Gutierrez has treated patients with venous disease, ulcers, and complicated wounds with endovenous ablation therapy and other procedures. In 2010, Dr. Gutierrez began exclusively managing and treating venous disease.

With Dr. Gutierrez’s expertise in venous disease and surgery, he is an invaluable physician with VasCare. He is currently working out of our Beaumont Clinic. To schedule an appointment with Dr. Gutierrez, please fill out a request form or give us a call.

Memberships and Recognitions:

• Board Certification: American Board of Surgery
• Board Certification: National Board of Physicians and Surgeons.
• Fellow of American College of surgeons
• Fellow of American Vein and Lymphatic Society

Marco Serrano, RPA, RCSA

Radiology Physicians Assistant

Marco Serrano is a board-certified interventional radiology practitioner assistant at VasCare. With more than 20 years of experience, Marco specializes in diagnostic and interventional radiology, including endovascular procedures. Marco routinely works with venous disease, peripheral arterial disease, end-stage renal disease, and vascular embolization procedures. Marco is committed to providing quality care, ensuring patient well-being and health. Marco holds his Bachelor’s degree in Advanced Radiology Science with a focus on Radiology Practitioner Assistant from Weber State University.

Berenice Garcia, FNP-C

Nurse Practitioner

Berenice Garcia is a dedicated nurse practitioner at VasCare. She proudly earned her Master of Science in Nursing from Chamberlain University in 2020. Fluent in Spanish, Bernice is effective in communicating with patients ensuring they receive care in a trusting and safe environment. Bernice is focused on venous disease, peripheral vascular, emergency nursing, cardiac nursing and trauma nursing. She is a member of the American Nurse Practitioner Association and the Coastal Bend Advance Practice Association.