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Clinic Closure Alert:

Optum – Madison Center is partially closed due to a facility issue. Patients with upcoming appointments will be contacted directly. We apologize for the inconvenience.

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Mark Keller, MD

Mark Keller, MD

Optum Provider

Specialty

Pediatrics

Languages

English

Phone Number

1-360-629-1500

Fax Number

1-360-629-1513

Seeing patients at

Patient Reviews

Patient review summary

Learn about our survey

5

4

3

2

1

4.8

4 reviews

    • Reviewed on May 8, 2026
    • Verified Review

    We love Dr Keller. Always professional, super kind, and knowledgeable

    • Reviewed on Apr 23, 2026
    • Verified Review

    Dr Keller was really wonderful. Calm and helpful for our situation.

    • Reviewed on Feb 5, 2026
    • Verified Review

    Dr. Keller has been wonderful with our child since the first week of her life. He is patient, helpful, reassuring, and kind.

    • Reviewed on Sep 14, 2025
    • Verified Review

    Dr. Keller was super personable and really friendly with my kiddos. I am grateful to have found them a good pediatrician.

  • About Mark Keller, MD

    As a Type I diabetic, I had a lot of experiences early on with amazing medical professionals who inspired me to go into medicine so I could try and give similarly inspiring experiences to children. I hope to provide a comforting, uplifting and informative experience to my patients and families. With a background in urgent care and emergency medicine, I offer care for a wide range of acute conditions.

    Philosophy of care

    I work to provide the least invasive but most effective approach to caring for my patients. I focus on informed discussions about health care goals, preventive care and treatment options. It's important to me to help create the most stress-free experience possible.

    Gender

    Male

    Board certifications

    American Academy of Pediatrics

    Employed or contracted

    Employed

    Network Name

    Optum Care Washington

    NPI

    1497138861

  • Medical School

    • St. George's University

      Grenada, West Indies

    Residency

    • Albert Einstein Medical Center

      Philadelphia, PA

    Internship

    • Albert Einstein Medical Center

      Philadelphia, PA