Providing care for adults of all ages, I enjoy educating my patients about their current health condition and recommending ways to improve it. My main focus is on prevention of chronic illness and disease. In my spare time, I enjoy traveling with my family, reading, and being active.

Nancy Ross comes from a long line of health care professionals and is a long time nurse, first specializing in cardiac surgery, then wanting more patient contact, obtained her master's degree and becoming a Nurse Practitioner. From there Nancy worked in a private solo practice in Alvin for three years, enjoying seeing a wide variety of patient conditions, including our older patients. Upon coming to UTMB, Nancy worked with oncology patients in the Department of Surgery before working in primary care and enjoyed the professional challenges of working with the patient population.

A recurrent theme of Nancy's career is that she enjoys challenges and learning at every opportunity to provide the best outcomes for her patients. When her mother retired at 67 from nursing, her mother found new challenges to enjoy in a new career as a published poet and author. Nancy took this to heart, understanding that every phase of life is a challenge to be relished and enjoyed. Nancy also enjoys quilting, baking, travelling and reading a good book.

Melissa Smith-Phillips is an Associate Professor of Pediatrics. She received her B.S. in Biology from Louisiana College, after which she completed a two-year research fellowship with the National Cancer Institute. She completed her M.D. and Ph.D. in 2011 through UTMB's Combined Degree Program and subsequently was accepted into UTMB's Pediatric Residency Program which she completed in 2014.

Tiffany Perez, DO is originally from Houston, Texas. She received her bachelor’s degree in Biochemistry from Baylor University in Waco, Texas. Following this, she attended medical school at Edward Via College of Osteopathic Medicine in Auburn, Alabama. She completed residency at Oklahoma State University/OMECO Teaching Health Center in Tulsa, Oklahoma.

Dr. Perez puts the needs of her patients at the forefront of everything she does and continually strives to deliver the best levels of patient care at all times. She pursued family medicine because she enjoys taking care of patients of all ages and backgrounds. Her clinical interests include minor procedures, women's health, and preventive medicine.

Dr. Perez’s hobbies include spending time with family, playing with her dog, and traveling. She is excited to join UTMB and hopes to make a positive impact in the community.

Dr. Karl Crudo is board certified in Family Medicine by the American Board of Family Medicine. He completed his residency at the Western Pennsylvania Hospital - Forbes Campus in Pittsburgh, Pa., and received his medical degree from the University of Santo Tomas, Philippines.

Dr. Manuela Murray received her medical degree from Instituto de Ciencias de la Salud Medical School in Medellin, Colombia in 2002. She completed her residency in Pediatrics at UTMB in 2008.

After finishing this training, she was promoted to the rank of Assistant Professor and currently serves as the Medical Director for Pediatric Urgent Care Centers and Ambulatory Operations. She is Co-Director for General Academic Pediatrics.

Her goal is to provide excellent patient care at every encounter and to make sure every patient and parent leaves the clinic with all their concerns addressed and questions answered.

Dr. James Yao Doe was born and raised in Ghana. He attended University of Science and Technology in Ghana where he completed his medical training. Upon completion, he worked as a general medical practitioner at Koforidua Regional Hospital and then Battor Catholic Hospital (both in Ghana), before relocating to the United States.

He was a resident in the Department of Family Medicine at University of Oklahoma in Tulsa. After completing residency, Dr. Doe initially worked as a locum doctor both in Oklahoma and in Houston, Texas seeing patients in primary care clinics, urgent care clinics and emergency rooms. He was then employed by the Coastal Health and Wellness Clinic (former 4c's Clinic) and then by University of Texas Medical Branch Correctional Managed Care. Dr. Doe recently joined the UTMB Community Based Clinics in March of 2016.

He is actively involved in Texas Association of Family Physicians Galveston Branch. Dr. Doe and his family are active members of the Ghanaian community in Greater Houston.

Dr. Kalia was born and raised in Texas, is a Texas A&M University Alumni, and is here to serve her community. She likes to come up with individualized realistic health plans and medical treatments with her patients. She truly enjoys the variety of medical conditions she gets to treat as a primary care physician, as well as the bonds she creates with her patients. Currently, she is an assistant clinical professor for UTMB who enjoys teaching also.

Medicine is her hobby. Outside of medicine, she enjoys spending time with her family which includes laughing at her husband's dad jokes and son's humor, cooking, audio-books, movies, volunteering, and research. Her grandmother, parents, and siblings all reside in League City.

Dr. Campbell comes to UTMB Health from the East Carolina University Brody School of Medicine, where he most recently served as the Senior Associate Dean for Academic Affairs, Chief Academic Officer, and Associate Professor of Family Medicine. He also served as their Associate Dean for DEI and Director of their Research Group for Underrepresented Minorities in Academic Medicine. Prior to his tenure at East Carolina University, Dr. Campbell served on the faculties at Florida State University College of Medicine and the University of Florida College of Medicine.

Dr. Campbell earned a Bachelor of Science (BS) from Florida A&M University in Tallahassee, FL and a Doctorate of Medicine from the University of Florida College of Medicine in Gainesville, FL. He completed a residency with the Tallahassee Memorial Family Medicine Residency Program in Tallahassee, FL.

Dr. Campbell currently holds the Sealy Hutchings and Lucille Wright Hutchings Chair in Family Medicine.

Dr. Crystal Sierra joined UTMB Health in November 2010.  After completing her undergraduate studies at The University of Texas - Pan American in Edinburg, Texas, Dr. Sierra earned her medical degree from The University of Texas Medical Branch in Galveston in 2006. In 2009, she completed her Residency in Pediatrics at UTMB. Prior to working for UTMB, Dr. Sierra worked as a pediatrician in Clear Lake.

Dr. Sierra is board certified by The American Board of Pediatrics. She is also certified in Basic Life Support and Pediatric Advanced Life Support. She has her Texas medical license, and is a member of The American Academy of Pediatrics.

Dr. Sierra is married to Dr. James T. Sierra, a dentist in Friendswood, and they have two beautiful daughters, Gabriella and Francesca.  Dr. Sierra is fluent in Spanish and also enjoys reading and traveling with her family in her spare time.  She has enjoyed living in the area, and is excited to be giving back to the community!