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About Dr. Callahan

Dr. Mary Callahan completed her undergraduate degree in Biology at The George Washington University in Washington, DC. She went on to attend The George Washington University School of Medicine and graduated in 2004 with her medical degree. She moved to Richmond, VA where she completed her Pediatric Residency, and shortly thereafter, relocated to Fredericksburg, VA to practice outpatient pediatrics. She feels blessed to have had the privilege to accompany many children and families in the community on their health journeys over the last 12 years.

Dr. Callahan has a passion for helping families raise strong, confident, health-conscious children who can be supported to live up to their God-given potential. She also believes that every child needs structure and encouragement from parents who feel supported by their pediatrician. She strives to work with parents and children as a team to build and maintain that support.

Licensed States

Virginia, Kansas (Telehealth Only), Illinois, Florida (Telehealth)

In Network Carriers

Aetna, Cigna, Medicare Tricare Select, UnitedHealthcare
United Healthcare Networks Include: Choice (Plus POS, EPO, HMO, HMO Plus), Surest Plan, Navigate & Navigate Plus, Core (EPO, HMO, Choice Plus POS), Charter (HMO, PPO, EPO), NexusACO (RB, NRP, OA, OAP, RP, R, NR, NRB), Select (HMO, HMO Plus), Veteran Affairs, Doctors Plan (EPO, Plus POS, HMO), Select (EPO, Plus POS, Plus HMO), PPO
BlueCross BlueShield Networks Include: BCE – Blue Choice PPO Preferred, PPO – Preferred Provider Organization, BCO – Blue Choice Options, BCS – Professional Blue Choice PPO,  TNF – Blue Cross Community Health Plans, DUE – Dual Eligible MMAI

NOTE: This provider does not bill Medicaid.

Accepts those who are insured with:
Christian Brothers Ministry Services Plan
Diocese of Saint Petersburg, Florida
Christendom College

Services Offered

  • Pediatric health and wellness
  • Convenient care for minor illnesses
  • Vaccination consultation
  • Pediatric behavioral help including depression, anxiety, ADHD
  • Adolescent medicine from a Catholic perspective
  • All general pediatric and adolescent needs

Patient Testimonials

Dr. Callahan has been our pediatric provider for over 15 years. She is warm, friendly and outgoing with a knowledge base in her field that can’t be matched. Our family receives concierge care at an affordable rate. A recent health emergency with our college student left us in tears of gratitude as Dr. Callahan became our daughter’s health advocate when the healthcare system failed her. Dr. Callahan’s bedside manner, diagnostic skill, and heart for caring for her patients, reminds us of health care back when docs made house calls and felt like family. God blessed us with Dr. Callahan!


Dr. Callahan sees patients from birth through young adulthood.
*Languages: English