Skip to main content
Xavier Fonseca, MD, Pulmonology, Billings, MT

XavierFonsecaMD

Pulmonology • Billings, MT

Critical Care Medicine

Physician

Join to view full profile

Dr. Fonseca is on Doximity

As a Doximity member you'll join over two million verified healthcare professionals in a private, secure network.

  • Gain access to free telehealth tools, such as our “call shielding” and one-way patient texting.
  • Connect with colleagues in the same hospital or clinic.
  • Read the latest clinical news, personalized to your specialty.

See Dr. Fonseca's full profile

Already have an account?

  • Office

    2800 10th Ave N
    Billings, MT 59101

Education & Training

  • Mayo Clinic College of Medicine and Science (Rochester)
    Mayo Clinic College of Medicine and Science (Rochester)Fellowship, Pulmonary Disease, 2018 - 2020
  • Mayo Clinic College of Medicine and Science (Rochester)
    Mayo Clinic College of Medicine and Science (Rochester)Fellowship, Critical Care Medicine (Internal Medicine), 2016 - 2018
  • Woodhull Medical and Mental Health Center
    Woodhull Medical and Mental Health CenterResidency, Internal Medicine, 2013 - 2016
  • Universidad Catolica de Santiago de Guayaquil
    Universidad Catolica de Santiago de GuayaquilClass of 2008, MD

Certifications & Licensure

  • MI State Medical License
    MI State Medical License 2022 - 2025
  • MT State Medical License
    MT State Medical License 2023 - 2025
  • WY State Medical License
    WY State Medical License 2024 - 2025
  • IL State Medical License
    IL State Medical License 2020 - 2023
  • MN State Medical License
    MN State Medical License 2016 - 2020
  • WI State Medical License
    WI State Medical License 2017 - 2019
  • American Board of Internal Medicine Internal Medicine
  • American Board of Internal Medicine Critical Care Medicine
  • American Board of Internal Medicine Pulmonary Disease

Publications & Presentations

PubMed

Dr. Xavier Fonseca, Dr. Xavier Fonseca, MD, Dr. X Fonseca