Providers

Dr. Antonio Mancera | Internal Medicine, Rheumatologist

Dr. Mancera is a native of Laredo and product of it’s schools. He graduated from Alexander Magnet High School and received his B.S. from Baylor University.

Dr. Antonio Mancera

Internal Medicine, Rheumatologist

Dr. Antonio Mancera

Dr. Mancera is a native of Laredo and product of its schools. He graduated from Alexander Magnet High School and received his B.S. from Baylor University.

Over the next 10 years he completed his training in San Antonio. He attended the UT Health Science Center at San Antonio where he received his Medical Degree. He did his Internal Medicine Residency at the University Hospital and Audie Murphy V.A. Hospital. He then spent additional years specializing in Rheumatology.

Dr. Mancera has also attended many training courses in musculoskeletal ultrasound. With the ultrasound machine (also known as a sonogram machine), he can provide joint or carpal tunnel injections with more accuracy. The ultrasound machine also helps with diagnosis of certain conditions.

Dr. Mancera specializes in the latest treatment of severe autoimmune conditions such as lupus, psoriatic arthritis, vasculitis, and rheumatoid arthritis. The Laredo Arthritis & Rheumatology Center also has an infusion suite to provide I.V. medications such as Remicade, Actemra, Orencia, Benlysta, IVIG, Cytoxan, and Rituxan if necessary.

Dr. Mancera is excited to bring his services to South Texas and help people with arthritis and rheumatological conditions live a more a happier and a productive life.

Physician Assistants & Staff

Physician Assistants are trained health care providers who have received a Bachelor’s and subsequent Master’s Degree in Physician Assistant Studies.
They are trained to diagnose and treat diseases under the supervision of a physician.

Our PA’s have been extensively trained by Dr. Mancera and are an invaluable resource to our community.

Marcela Gallegos | Physician Assistant

Marcela Gallegos was born and raised in Brownsville, Texas. It was growing up in a border town that exposed her to the importance of community service in an underserved area. She has participated in numerous community service events such as Mexico Missions program for 3 years as a student leader to help those in need. It was through her passion for community service that triggered a desire to continue serving others through the medical field. She moved to San Antonio to complete her Bachelor’s degree at the University of the Incarnate Word. As a student, she continued her passion for community service and served as a Physician Assistant Representative in the Health Professions Society and instituted a Wellness Initiative to educate others on the active process of improving all the dimensions of wellness. She completed her bachelors of Science in Biology and graduated Magna Cum Laude. She is part of Alpha Lambda Delta National Honor Society and Alpha Chi National College Honor Society. She continued her studies in master of physician assistant studies at the University of Texas Health Science Center and graduated in 2014. Marcela is board certified by the National Commission on Certification of Physician Assistants and licensed by the Texas State Board of Medical Examiners.

Prior to joining Laredo Arthritis & Rheumatology Center in 2015, Marcela worked in a dermatology practice, where she had her initial exposure to many skin manifestations that may be seen in Rheumatologic diseases. She has been thoroughly trained under the guidance of Dr. Mancera and has completed a course for ultrasound guided joint injections. She looks forward to participating in patient care and values the importance of clear, compassionate communication. In her free time, Marcela enjoys participating in community service events, running, playing tennis, spending time with family, and traveling.

Marcela Gallegos

Physician Assistant

Bernice Esteghamatdarshad | Physician Assistant

Bernice Esteghamatdarshad Guerra joined Laredo Arthritis & Rheumatology Center, PLLC as a physician assistant in 2015. Born and raised in Eagle Pass Texas she graduated from Eagle Pass High School and earned her Bachelor’s degree in Chemistry with a minor in Biology from Texas A&M International University. Following graduation, she became a science teacher at Lyndon B. Johnson High School in Laredo Texas. Then, she attended the University of Texas Health Science Center of San Antonio at the Laredo Extension Campus obtaining her master’s in Physician Assistant Studies in 2013. Bernice has embraced Laredo well enough to call it home and is engaged in many community activities; such as being a member of the Rio Grande International Study Center as well as volunteers and donates her money to assist homeless animals. Her hobbies included watching movies, sporting events, and attending music concerts. She enjoys attending Comic Con and professional wrestling events. She likes basketball and football and her favorite teams are the San Antonio Spurs and the Dallas Cowboys. She also plays the piano in her spare time.

Bernice Esteghamatdarshad

Physician Assistant

Sara Alvarez | Office Manager

Sara Alvarez

Office Manager

Griselda Don Juan | Office Clerk

Griselda Don Juan

Office Clerk

Raul Ugalde, Jr | Chief Operating Officer

Raul Ugalde, Jr

Chief Operating Officer

Belinda Sanchez | Assistant Office Manger

Belinda Sanchez

Assistant Office Manger

Alejandra Ramirez | Radiologic Technologist RT(R)

Alejandra Ramirez

Radiologic Technologist RT(R)

Sylvia Melendez | Registered Nurse

Sylvia Melendez

Registered Nurse

Becky Maldonado | Licensed Vocational Nurse

Becky Maldonado

Licensed Vocational Nurse

Evelyn Hernandez | MA - Infusion Coordinator

Evelyn Hernandez

MA - Infusion Coordinator

Elizabeth Gonzalez | MA - Infusion Admin

Elizabeth Gonzalez

MA - Infusion Admin

Sylvia Rogerio | Billing Specialist

Sylvia Rogerio

Billing Specialist

Susie Carrizales | MA – Billing Admin

Susie Carrizales

MA – Billing Admin

Victor Gutierrez | Medical Assistant

Victor Gutierrez

Medical Assistant

Denise Sanchez | Medical Assistant - Labs

Denise Sanchez

Medical Assistant - Labs

Laura Valdes | Admin Assistant – Registration

Laura Valdes

Admin Assistant – Registration

Arely Nunez | Admin Assistant – Registration

Arely Nunez

Admin Assistant – Registration

Analee Martinez | Medical Assistant

Analee Martinez

Medical Assistant

Angelica Espinoza | Infusion Medical Assistant  

Angelica Espinoza

Infusion Medical Assistant  

Maria Landa | Medical Assistant 

Maria Landa

Medical Assistant 

Josie Aguirre | Medical Assistant

Josie Aguirre

Medical Assistant

Gabby Mendoza | Infusion Admin Assistant

Gabby Mendoza

Infusion Admin Assistant

Dariela Tovias | Medical Assistant Ultrasound Tech

Dariela Tovias

Medical Assistant Ultrasound Tech