Dr. Errol O. Grannum graduated from the Yale University School of Medicine in 1993. He works in McAllen, TX and specializes in Ophthalmology. Dr. Grannum is affiliated with Doctors Hospital At Renaissance. He speaks English and Spanish.
Years in Practice: 21 Years
Languages Spoken: English, Spanish
Medical School: Yale University School of Medicine
Graduation Date: 1993
Hospital Affiliations: Doctors Hospital At Renaissance