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Timothy J Sullivan

Timothy J Sullivan, MD

Pediatrics

Accepting New Patients
Affiliated Provider
Online Booking
Need help scheduling? Call 209-536-5120

Highlights

Age Groups Seen

  • Infant 0-2
  • Child 2-12

Languages

  • English

Gender

Male

About Timothy J Sullivan

About The Provider

Timothy Sullivan, MD, completed medical school at Oregon Health Sciences University in Portland and a five-year residency in General Pediatrics at Blank Children’s Hospital in Des Moines, Iowa. Upon completing his residency, he served five years as General Pediatrician with the United States Air Force at RAF Lakenheath, United Kingdom, providing all aspects of pediatric care for the families of airmen serving at the base.
Growing up in Manhattan Beach, California, Dr. Sullivan had a young sister with a serious illness. From that time, he always had an interest in pursuing a medical career, particularly pediatrics.
When Dr. Sullivan isn’t busy providing patient care, he is always looking for outdoor adventures with his three kids.

Provider Type

Physician

Locations

  1. Pediatrics: Adventist Health Sonora
  2. Foothill Pediatrics: Adventist Health Sonora

Expertise

Education

  • Residency Program: Iowa Health
  • Medical School: Oregon Health & Science University

Board Certifications

  • Pediatrics: American Board of Pediatrics, 2002

Insurance

Please contact the practice directly to confirm your health plan is accepted.
Search plans
  • Aetna
  • Anthem Blue Cross
  • Anthem MediCal
  • Blue Shield
  • CA Health & Wellness
  • CCS (AHSR)
  • Cigna
  • CMSP (County Medical Services Program) (AHSR)
  • Health Net Medi-CAL (AHSR only)
  • HealthNet
  • Medi-cal ORP1
  • Medicare AHSR Part B
  • Stanislaus Foundation (AHSR)
  • Tricare
  • TriWest
  • UHC
  • Western Growers (AHCL) (AHSR)

Ratings & Reviews

4.9 out of 5

68 ratings, 12 reviews

Our providers are at the heart of delivering whole-person care. We encourage patients to share their experiences through a patient satisfaction survey they receive following visits. Provider star ratings are calculated using patient responses to provider-focused questions in this survey. Please see the provider’s star rating and patient reviews below. Thank you for giving Adventist Health the opportunity to support your best health.

Likelihood of recommending this provider
Search reviews
    5 out of 5 stars
    Reviewed on 3/9/2026

    Dr Sullivan is such a wonderful pediatrician

    5 out of 5 stars
    Reviewed on 3/9/2026

    I say I would 100% recommend Dr Sullivan to people, but I was to gate keep him for my own kids. He's smart, confident, listens, and always puts my kids needs first.

    5 out of 5 stars
    Reviewed on 11/20/2025

    Dr. Sullivan is wonderful. We have never had a bad experience with him and have been seeing him for about ten years.

    5 out of 5 stars
    Reviewed on 11/20/2025

    Dr. Sullivan is a very thorough doctor who makes us feel at ease and answers all our questions and is very attentive and kind.

    5 out of 5 stars
    Reviewed on 10/22/2025

    Dr Sullivan is an incredible pediatrician and we are so lucky to have him for our family. He listens to our concerns and takes them seriously. You can tell he is a parent who understands kids and their challenges.

    5 out of 5 stars
    Reviewed on 9/18/2025

    Dr S is the best, as always. He listened, he explained his thoughts and even called me the next day to check in on my child. He's truly a gem who cares deeply for the kids in the community!

    5 out of 5 stars
    Reviewed on 9/4/2025

    Dr. Sullivan is an awesome provider. He is lighthearted and also caring!

    1 out of 5 stars
    Reviewed on 9/4/2025

    He didn't even bother to look at our child before recommending vaccines. He looked at our child for 2 minutes and didn't take the time to look at our child's history or to see if we had any questions. He got defensive when we refused the vaccines at that time and then reported us to the social workers.

    5 out of 5 stars
    Reviewed on 8/25/2025

    Dr Sullivan was so awesome! He even called a few days later to check in and go over everything to make sure we didn't have left over questions. Above and beyond awesome!

    5 out of 5 stars
    Reviewed on 6/12/2025

    Always attentive and communicative

    5 out of 5 stars
    Reviewed on 5/30/2025

    We adore Dr. Sullivan. Very caring, not just for his patience.

    5 out of 5 stars
    Reviewed on 5/29/2025

    Super helpful and informative