Dr. John Sullivan , MD
Pediatrics • New Haven, CT
Professional Overview & Biography Verified Profile Summary
Dr. John Sullivan, MD is a certified Pediatrics practicing in New Haven, CT. With approximately 7 years of clinical experience since graduating from University Of Massachusetts Medical School in 2019, Dr. Sullivan delivers high-quality medical care to the local community at PO BOX 208064.
Dr. Sullivan is affiliated with Yale University and accepts Medicare assignment.
Practice Location & Contact Primary Location
Po Box 208064
New Haven, CT 065208064
Medicare Profile & Education
University Of Massachusetts Medical School
2019
✓ Accepts Assignment
In-Person Only
Specialty Benchmarks & Practice Insights
Comparative analytics for Pediatrics in New Haven, CT
Practicing in New Haven, CT (1087 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Clinical Seniority & Experience Comparison
Medical Specialties & State Licenses
CMS Verified: 2025-08-18NUCC Taxonomy Code: 208000000X
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
NUCC Taxonomy Code: 390200000X
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Hospital & Practice Group Affiliations
Yale University
1 Park St, New Haven, CT 065048901
Phone: 2037854081
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Pediatrics - Pediatric Cardiology
Doctor of Medicine (M.D.)
Pediatrics
Doctor of Medicine (M.D.)
Nurse Practitioner - Pediatrics
Advanced Practice Registered Nurse
Pediatrics
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Pediatrics - Pediatric Pulmonology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at PO BOX 208064, NEW HAVEN, CT 065208064 (Tel: 2037854081)
Registered at PO BOX 208064, NEW HAVEN, CT 065208064 (Tel: 2037854081)
Recorded as JOHN SULLIVAN, MD
Registered at 111 MICHIGAN AVENUE NW, WEST WING, 3RD FLOOR, SUITE 200, WASHINGTON, DC 20010 (Tel: 2024764568)
Registered at 111 MICHIGAN AVENUE NW, WEST WING, 3RD FLOOR, SUITE 200, WASHINGTON, DC 20010 (Tel: 2024764568)
NPI status registered as active in NPPES database
Registered at 20 YORK ST, NEW HAVEN, CT 065103220 (Tel: 2036884242)
Registered at 20 YORK ST, NEW HAVEN, CT 065103220 (Tel: 2036884242)
Recorded as JOHN SULLIVAN
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
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NPI Administrative Meta
Mailing Address
Po Box 208064
New Haven, CT 065208064
Phone: 2037854081
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.