Our Providers

Martin County Hospital has one of the most skilled and experienced medical staffs in West Texas. Our team of providers will ensure you receive the absolute best care.

Calvin Cargill, M.A., M.D., FAAFP

Dr. Cargill is a graduate of University of Texas Health Science Medical Center San Antonio, Texas with a Master of Arts in Physiology. He was granted acceptance as a Fellow of the American Academy of Family Physicians in 2015 after 25 years of practicing.
Dr. Cargill has been practicing over 28 years, the last two years as the Chief of Medicine for MCHD and the last three years as Medical Director and Physician of MCHD Family Clinic.
Dr. Cargill's patient loyalty is attributed to his caring and gentle manner. He practices with a common sense approach to medicine and tries to always balance between what is reasonable and necessary for a high standard of care. A hug and a kind word are always helpful with medical illness and elderly life issues.

FOR AN APPOINTMENT WITH DR. CARGILL - CALL (432) 607-3243 - Option 1

Melencio Juan, M.D.

Dr. Juan is a graduate of the University of Santo Tomas in Manila, Philippines. Dr. Juan completed a post graduate internship in Santo Tomas University Hospital leading him to a staff position at San Antonio District Hospital in Nueva Ecija, Philippines. Shortly thereafter, he immigrated to the US working in multiple satisfying healthcare positions. In 1999, Dr. Juan completed Family Practice residency training at Whichita Falls Family Practice. Moving to Big Spring in 2001, Dr. Juan practiced Family Medicine in both the inpatient and outpatient setting until accepting a family practice position at MCHD in 2014 where he currently enjoys practicing family medicine and his close patient interaction that a small rural community brings. Dr. Juan is board certified from the American Board of Family Practice and currently sits a member of the Permian Basin County Medical Society.

FOR AN APPOINTMENT WITH DR. JUAN, CALL (432) 607-3243 - Option 2

Hima Pachuri, D.O.

Dr. Parchuri joined Martin County Hospital District in November 2019 along with her husband Dr. Mark Salcone. Dr. Parchuri grew up in Lansdale, PA, a suburb of Philadelphia. After receiving her medical degree from Rowen University School of Osteopathic Medicine in 2005, she completed a Family Medicine Residency in 2008. Upon completing her Residency training she pursued a two-year Geriatric Fellowship graduating in 2010. She is currently board certified in Geriatrics and Family Medicine.
Dr. Parchuri states “taking care of patients and being something positive in someone’s life is what makes her career rewarding.” She enjoys taking the most complicated patient and together, finding the right balance for them to live their best life.

FOR AN APPOINTMENT WITH DR. PACHURI, D.O. - CALL (432) 607-3243 - OPTION 3

Mark Salcone, D.O.

Dr. Mark Salcone joined Martin County Hospital District & Family Clinic in November 2019. He is from Mullica Hill, New Jersey, a city twenty minutes south of Philadelphia. He graduated from Rowen University School of Osteopathic Medicine in 2005 and completed his residency training in general surgery in 2010. Dr. Salcone continued his advanced training and completed a Fellowship in Bariatric and Minimally Invasive Surgery at Virginia Commonwealth University (VCU), Richmond Virginia in 2011.
Upon completion of his surgical training he spent the next eight years providing surgical services at Our Lady of Lourdes Medical Center in Camden, New Jersey, with five of those as the Director of the Minimally Invasive and Bariatric Center of Excellence. There he performed minimally invasive procedures such as gallbladder removals, hernia repairs, gastric bypasses and gastric sleeves. Dr. Salcone will be offering general surgery, colonoscopy, and endoscopy procedures at Martin County Hospital.

Dr. Salcone is now accepting referrals and new patients in the Martin County Family Clinic, 432-607-3243 Option 4 or 432-607-3699.

Robin Alvarado, FNP-C

Robin Alvarado graduated from Texas Tech University Health Science Center with a Master's in Nursing and is a member of the American Academy of Nurse Practitioners. Robin is the hospitalist at MCHD and a provider at MCHD Family Clinic RHC. Robin has been a Nurse Practitioner since she graduated from Texas Tech in 2009 and practiced at MCHD since 2013 with a passion for women's health and primary care. Robin's years of nursing has instilled a strong belief that listening to her patients and giving each person the individualized attention they require at any age is the key benefit to care. Robin has a charismatic and practical approach to family medicine and always goes the extra mile for her patients.

FOR AN APPOINTMENT WITH ROBIN, CALL (432) 607-3243 – Option 5

Megan Chandler, FNP-C

Megan Chandler is a graduate of Texas Tech University Health Sciences Center School of Nursing where she completed her Masters in Nursing and is a Board Certified Family Nurse Practitioner. She also completed her undergraduate degree at Texas Tech. Megan is able to care for all age ranges and this includes wellness exams from birth through the end of life. She prides herself on providing thorough care and excellent patient satisfaction. She is confident in managing chronic illness but also more acute care concerns. Megan has enjoyed family practice and holds a special spot for pediatrics.

FOR AN APPOINTMENT WITH MEGAN, CALL (432) 607-3243 – Option 6

Linda Wiebe, FNP-C

Linda has been with the MCHD family since 2009, she started as a Licensed Vocational Nurse and over time advanced her career to a Nurse Practitioner all while remaining dedicated to MCHD and the patients of Martin County.
Linda received her Bachelor of Science in Nursing in 2014 and continued her education obtaining her Family Nurse Practitioner in 2018; both from Texas Tech University. Between education and accumulated years of experience with MCHD, she has built solid relationships with the community, her patients, and staff. She prides herself in establishing thorough care and focusing on the individualized needs of all the patients in her practice.
FOR AN APPOINTMENT WITH LINDA, CALL (432) 607-3243 – Option 7

Keith Gist, CRNA

Keith Gist, CRNA, APRN, NSPM-C has been affiliated with Martin County Hospital District since 2016. He received his Bachelors of Science in Nursing (BSN) in 2011 from Texas Tech University. He attended Union University in Jackson, TN for the Certified Registered Nurse Anesthetist (CRNA) program graduating in 2014. He recently added to his education by completing a Fellowship in 2018 at Texas Cristian University becoming board certified in Non-Surgical Pain Management.
Keith received three years of critical care experience in the Intensive Care Unit at Covenant Medical Center in Lubbock, TX before attending the CRNA program. After completion of the program, he moved to the Permian Basin working as a CRNA at Midland Memorial Hospital for two years in the surgery department.
Keith desires to make each person and their family as comfortable for surgery as possible. He enjoys being a part of the patient’s physical and emotional healing process from beginning to end.

For more information regarding pain management and other services offered at Martin County Hospital District and Family Clinic, please call (432) 607-3243.