Dr. Heriberto J. Callejas, M.D.

Media Releases

Get to know Internist Dr. Heriberto J. Callejas, who serves patients in Texas.

A well-versed internist & a member of the American College of Physicians, Dr. Callejas can be found on staff at Methodist Dallas Medical Center in Texas.

From high quality medical services to nationally renowned medical education and residency programs, Methodist Dallas Medical Center is a leading healthcare resource in North Texas. It has been consistently recognized for its high standards of care for heart attack, heart failure, stroke, and other medical issues that require expert-level treatment.

In 1979, Dr. Callejas graduated with his medical degree from the Faculty of Medical Sciences of the National Autonomous University of Honduras. He then relocated to the United States, performing his residency in internal medicine at Memorial Health in 1996.

Subsequent to his training, he attained board certification in internal medicine through the American Board of Internal Medicine (ABIM). The ABIM is a physician-led, non-profit, independent evaluation organization driven by doctors who want to achieve higher standards for better care in a rapidly changing world.

Practicing general internal medicine, Dr. Callejas moved to Texas to join Oak Cliff Family Healthcare. For over 22 years, he managed a high volume practice with his three partners. He focused his practice on caring for highly complex patients, providing preventive care, as well as maintenance of chronic diseases with an emphasis on quality improvement. In 2017, he and his partners sold their practice to Wellmed and Dr. Callejas continued to work for Wellmed until he retired in March of 2019. On August 10th, 2020, he returned to work for Wellmed at the same office he retired from and continues to serve the community.

Internal medicine is the medical specialty dealing with the prevention, diagnosis, and treatment of adult diseases. Physicians specializing in internal medicine are called internists. They manage and prevent common and complex diseases by providing comprehensive care and promoting overall well-being.

Every year from 2013 to 2018, Dr. Callejas was recognized by D Magazine as one of the Best Doctors in Internal Medicine.

At present, he lives in Frisco with his wife of four decades. They have 5 grown children and 11 grandchildren.

Recommended Articles

• Is Chocolate Good for Us?

  Is Chocolate Good for Us?I will not stop eating or drooling over chocolates even if somebody tells me that it will kill me! I will still love and crave it. Is there a disease for where chocolate is the treatment? Guess I wouldn’t mind having that! I just can’t compare the happiness that I get...

• What Are Histamine Blockers and How Do They Work?

  What are histamine blockers?Histamine blockers also called as antihistamines are medications that block or reduce histamine to stop the symptoms of allergy. Histamine is a chemical that is released by a type of white blood cell called mast cell in response to allergies or injuries. The cells that...

• What Is Raynaud’s Disease: Causes, Symptoms, Diagnosis, and Treatment

  What is Raynaud’s disease?Raynaud’s disease, also known as Raynaud’s syndrome or Raynaud’s phenomenon, is a rare blood vessel disorder described by a French physician named Maurice Raynaud in 1862. In this condition, the blood vessels that carry blood from the heart to other parts of the...

• What Team of Specialists Should I Contact if I Have Meningitis?

  As complex as it is, meningitis can sometimes be a threat to life. Treating meningitis can be tricky, hence, it needs a team of medical practitioners to make a diagnosis and offer treatment for the condition.  You can call your doctor immediately under the following circumstances:...

• What Complications May Occur If Bronchitis Goes Untreated?

  Acute bronchitis may not cause any complications if it occurs the first time in a person. It usually goes away by taking proper rest after about two to three weeks. However, if bronchitis is left untreated, it can affect the respiratory system and damage the airways and lungs. Because of this...

• 7 Random Reasons for Irregular Periods

  The menstrual cycle normally happens every month with a series of monthly changes that occur in a woman’s body in preparation for the chance of pregnancy. Every month, women go through the process of ovulation, wherein one ovary releases an egg. When the egg is not fertilized, the uterine lining...