El Campo Medical Clinic | MHMG
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Memorial Hermann Medical Group El Campo

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  • Mon: 7:00am-5:00pm
  • Tue: 7:00am-5:00pm
  • Wed: 7:00am-5:00pm
  • Thu: 7:00am-5:00pm
  • Fri: 7:00am-5:00pm

General Information

About Your MHMG El Campo Clinic

The Memorial Hermann Medical Group (MHMG) El Campo medical office provides highest-quality primary care for patients in the Wharton County area. Our family physicians and specialists focus on precise diagnosis and up-to-date treatment, but the heart of our practice is caring and empathetic relationships with patients of all ages – newborns to seniors.

Why should MHMG be your first choice for health care? As an MHMG El Campo patient, you have access to:

  • State-of-the-art primary care, diagnosis and treatment conveniently located to serve patients from El Campo, Edna, Louise, Bay City and nearby communities
  • The wealth of clinical resources provided by the Memorial Hermann Medical Group – one of the Houston area’s largest and most experienced physician networks
  • MHMG’s convenient 24/7 online patient portal

Our physicians, who have years of experience in family medicine, focus on building long-lasting relationships with their patients. They are specially trained in diagnosis, treatment and prevention of disease and skilled in managing diabetes, hypertension, infectious diseases, kidney disorders and other chronic conditions.

Pediatrician Dr. Greg Dimmick earned his medical degree at the University of Nebraska at Omaha and completed his internship and residency at The University of Texas Health Science Center at Houston (UTHealth) Medical School. Board certified in pediatrics, he treats newborns through age 18.

Pediatrician Dr. Susan Winchell earned her medical degree from Baylor College of Medicine in Houston and completed her internship and residency in pediatrics through the Baylor-affiliated program at Texas Children's Hospital. Board certified in pediatrics, she sees patients from newborns to 19 years old. Her key clinical interests are asthma and allergies.

Internist Dr. John Wissinger, who comes from a family of physicians, earned his medical degree at The University of Texas Medical Branch-Galveston and completed his residency at Tulane University Health Sciences Center in New Orleans. Dr. Wissenger sees patients above the age of 18. His primary clinical interests are hypertension and diabetes.

Cardiologist Dr. Carlos Zorilla earned his medical degree from Universidad Peruano Cayetano Heredia in Lima, Peru. He completed a residency and fellowship in cardiology at the University Of Louisville School Of Medicine and St. Vincent's Medical Center. Board certified in cardiovascular disease and internal medicine, Dr. Zorilla specializes in cardiology and interventional cardiology. His primary clinical interests are cardiac angioplasty, cardiac ultrasound, heart catheterization and stress testing.

Certified physician assistant Jo Cain began her medical career as a medic with the U.S Army. She sees patients age two and older. She treats a number of conditions such as flu, cold and cough and also supervises women's examinations and Department of Transportation (DOT) physicals. She advocates preventive medicine and bases her practice on honesty and compassion.

Acute care nurse practitioner Anne Mazel earned her master's degree from University of Texas Health Science Center at Houston (UTHealth). Specially trained in critical care and cardiology, she sees patients above the age of 12 years. She treats and manages a number of clinical conditions including hypertension, congestive heart failure, high cholesterol and arrhythmias. She focuses on patient education with the goal of reducing future health problems.

Certified pediatric nurse Megan Riha earned her bachelor’s degree in nursing from the University of Texas Medical Branch-Galveston and her master's from the University of Texas Health Science Center at Houston (UTHealth). An experienced neo-natal intensive care nurse, she provides annual checkups, immunizations, sports physicals and other disease management for patients up to 18 years old.

Memorial Hermann Medical Group El Campo is located just north of Interstate 69 (Highway 59). It is conveniently accessible for patients from Wharton County and the surrounding area, including El Campo, Edna, Louise, Bay City, Hillje, Danavang, Ganado and Glen Flora. Ample parking is available.

MHMG El Campo is accepting new patients.

Patient Testimonials

Mary has always treated me with courtesy and respect. She is a very caring assistant. - Anonymous

Dr. Wissinger is a good provider, he has the ability to explain at my level. I can understand him. - Patient of Dr. Wissinger 

Very courteous and helpful. - Anonymous 

 

Physicians

  • Dr. Gregg J. Dimmick, MD

    Pediatrician

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    Dr. Gregg J. Dimmick, MD

    Pediatrician

    Gender

    Male

    Specialties

    Pediatrics

    Medical Education

    University of Nebraska at Omaha - Registrar 1977

    Residency

    University of Texas at San Antonio - GME 1980

    Cities Served

    Danevang, El Campo, Glen Flora, Hungerford, Lane City, Louise, Pierce, Wharton

  • Dr. Susan A. Winchell, MD

    Pediatrician

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    Dr. Susan A. Winchell, MD

    Pediatrician

    Gender

    Female

    Specialties

    Pediatrics

    Medical Education

    Baylor College of Medicine - Registrar 1985

    Residency

    Baylor College of Medicine - Graduate Medical Education 1988

    Cities Served

    Danevang, El Campo, Louise, Pierce

  • Dr. John F. Wissinger, MD

    Internist

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    Dr. John F. Wissinger, MD

    Internist

    Gender

    Male

    Specialties

    Internal Medicine, Primary Care

    Medical Education

    University of Texas at Galveston 1982

    Residency

    Tulane University Health Sciences Center 1985

    Cities Served

    Danevang, El Campo, Louise, Pierce

  • Dr. Carlos D. Zorrilla, MD

    Cardiovascular Disease Specialist

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    Dr. Carlos D. Zorrilla, MD

    Cardiovascular Disease Specialist

    Gender

    Male

    Specialties

    Cardiovascular Diseases

    Medical Education

    Universidad Peruano Cayetano Heredia 1971

    Residency

    St Vincent's Medical Center 1974

    Fellowship

    University of Louisville Hospital 1977

    Cities Served

    Beasley, Danevang, El Campo, Glen Flora, Hungerford, Lane City, Louise, Needville, Orchard, Pierce, Richmond, Rosenberg, Wharton

  • Janie Avila, MSN RN FNP-BC

    Family Nurse Practitioner

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    Janie Avila, MSN RN FNP-BC

    Family Nurse Practitioner

    Gender

    Female

    Bio

    Janie M. Avila, MSN, RN, FNP-BC, family nurse practitioner at the Memorial Hermann Medical Group, received a Master of Science in Nursing from Prairie View A&M University School of Nursing in Houston in 2009. She also earned her Bachelor of Science in Nursing from Prairie View in 2004 and has more than 18 years of nursing...

  • Ann Mazel, M.S.N., RN, ACNP-BC

    Acute Care Nurse Practitioner

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    Ann Mazel, M.S.N., RN, ACNP-BC

    Acute Care Nurse Practitioner

    Gender

    Female

    Bio

    Anne Mazel, MSN, RN, ACNP-BC
    Acute Care Nurse Practitioner

    acute care nurse practitioner for Memorial Hermann Medical Group Wharton and El Campo practices, Anne Mazel, M.S.N., RN, ACNP-BC, sees patients from 13-years-old and up, and has a special interest in cardiology and critical care.

    Mazel received her master’s in nursing...

  • Megan Riha, MSN, RN, CPNP-PC

    Pediatric Nurse Practitioner

    Show More >

    x

    Megan Riha, MSN, RN, CPNP-PC

    Pediatric Nurse Practitioner

    Gender

    Female

    Bio

    Megan Riha, MSN, APRN, CPNP-PC, certified pediatric nurse practitioner at El Campo, received her bachelor’s in nursing from the University of Texas Medical Branch at Galveston and her master’s in nursing from the University of Texas Health Science Center in Houston. She sees patients from newborn to 18-years-old, and has a special interest in...

Parking

Memorial Hermann Medical Group El Campo is located just north of Interstate 69 (Highway 59). It is conveniently accessible for patients from Wharton County and the surrounding area, including El Campo, Edna, Louise, Bay City, Hillje, Danavang, Ganado and Glen Flora. Ample parking is available.