Meet Dr. John H Greiner
Board-Certified Endodontist | Escondido, CA
Dr. John H. Greiner is a board-certified endodontist serving patients in Escondido, San Marcos, Vista, Poway, and throughout North County San Diego. He practices exclusively in endodontics, with a strong focus on personalized, precision care. Dr. Greiner approaches each patient by what he calls the “Platinum Rule” — treating every individual the way they want to be treated, taking time to understand their concerns, preferences, and goals before beginning treatment.
Dr. Greiner completed his undergraduate education in Computational and Systems Biology at the University of California, Los Angeles (UCLA) in 2009, and earned his Doctor of Dental Medicine (DMD) from Boston University Henry M. Goldman School of Dental Medicine in 2013. Following dental school, he served in the United States Navy, completing an Advanced Education in General Dentistry residency at Camp Pendleton and practicing as a general dentist for three years before pursuing specialty training.
Dr. Greiner completed his endodontic residency at the Naval Postgraduate Dental School in Bethesda, Maryland, and earned a Master of Science in Oral Biology from the Uniformed Services University of the Health Sciences. Following residency, he served as an endodontist in Okinawa, Japan, before returning to Camp Pendleton for his final Navy tour. He has practiced exclusively as an endodontist since 2018 and achieved board certification shortly thereafter.
Dr. Greiner is an active member of the American Association of Endodontists, American Dental Association, California Dental Association, and San Diego County Dental Society. He lives in North County San Diego with his wife, Rachel, and their two sons.
Honor
Honor in maintaining the highest levels of professionalism, integrity, and respect for every patient and referring provider.
Courage
Courage in pursuing innovation, embracing challenges, and advocating for patient-centered solutions.
Commitment
Commitment to lifelong learning, collaborative teamwork, and compassionate care in a calm and supportive environment.
