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About Joseph M. Longnecker

Dr. Joseph Longnecker is a pediatrician in Placentia, California and is affiliated with multiple hospitals in the area, including St. Jude Medical Center. He received his medical degree from A.T. Still University Kirksville College of Osteopathic Medicine and has been in practice for more than 20 years.
Medical School

Kirksville College of Osteopathic Medicine


Doctor's Hospital Rotating Internship Program


Letterman Army Medical Center

Professional Associations

American Academy of Family Physicians

Board Certifications

  • American Board of Pediatrics, Pediatrics