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Mark Chang Hwa Liu

Mark Chang Hwa Liu, MD

Pulmonology

Accepting New Patients

Highlights

Age Groups Seen

  • Young Adult 18-25
  • Adult 26-64
  • Older Adult 65+

Languages

  • English

Gender

Male

Johns Hopkins Affiliations:

  • Johns Hopkins School of Medicine Faculty

About Mark Chang Hwa Liu

Primary Academic Title

Professor of Medicine

Johns Hopkins Physician

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Background

Dr. Liu is a pulmonary physician with additional expertise in allergy and immunology. He is an expert in the diagnosis and treatment of patients with severe asthma with a focus on developing new treatments for severe disease that has failed to respond to standard therapies.

Find a Clinical Trial

View all trials by this principal investigator.

Contact for Research Inquiries

Phone: (410) 550-2505

Research Interests

Allergic inflammation, Asthma, Chronic obstructive pulmonary disease, Inflammatory and immunologic response to asthma

Lab Website

Mark Liu Lab

  • Research in the Mark Liu Lab explores several areas of pulmonary and respiratory medicine. Our studies primarily deal with allergic inflammation, chronic obstructive pulmonary disease (COPD) and asthma, specifically immunologic responses to asthma. We have worked to develop a microfluidic device with integrated ratiometric oxygen sensors to enable long-term control and monitoring of both chronic and cyclical hypoxia. In addition, we conduct research on topics such as the use of magnetic resonance angiography in evaluating intracranial vascular lesions and tumors as well as treatment of osteoporosis by deep sea water through bone regeneration.

Research Summary

Dr. Liu studies the mechanisms of inflammation in the lung with an emphasis on the response to allergen exposures and the role of macrophages, dendritic cells, and T cells in allergic inflammation in human studies.  He conducts multicenter  clinical trials sponsored by pharmaceutical companies or the NIH to develop new treatments for severe asthma.

Locations

  1. Johns Hopkins Bayview Medical Center
    • 5501 Hopkins Bayview Circle, Allergy & Asthma Center, 2nd Floor, Baltimore, MD 21224
    • Get Directions

Expertise

Education

  • Fellowship: Johns Hopkins University School of Medicine, 1981
  • Residency: Johns Hopkins Bayview Medical Center, Internal Medicine, 1978
  • Medical Education: University of Maryland School of Medicine, Medicine, MD, 1975

Board Certifications

  • Allergy and Immunology: American Board of Allergy and Immunology, 1987
  • Pulmonary Disease: American Board of Internal Medicine, 1982
  • Internal Medicine: American Board of Internal Medicine, 1978

Insurance

Please contact the location directly to confirm your health plan is accepted.
Search plans
  • Aetna
  • CareFirst
  • Cigna
  • First Health
  • Geisinger Health Plan
  • HealthSmart/Accel
  • Johns Hopkins Health Plans
  • MultiPlan
  • Pennsylvania's Preferred Health Networks (PPHN)
  • Point Comfort Underwriters
  • Private Healthcare Systems (PHCS)
  • Veteran Affairs Community Care Network (Optum-VACCN)

Ratings & Reviews

4.9 out of 5

33 ratings, 16 reviews

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

Overall Rating by Patient
Provider Listened Carefully
Provider Explained Things Clearly
Provider Knew Medical History
Provider Showed Respect
Provider Spent Enough Time
Search reviews
    5 out of 5 stars
    Reviewed on 2/23/2026

    Dr. Liu is an excellent Pulmonologist who cares about his patients!

    5 out of 5 stars
    Reviewed on 2/6/2026

    Dr Liu is great, understanding and supportive

    5 out of 5 stars
    Reviewed on 1/23/2026

    Dr Liu is an awesome provider. He provides the most recent medical knowledge to treat my condition.

    5 out of 5 stars
    Reviewed on 1/12/2026

    Dr Liu is great!

    5 out of 5 stars
    Reviewed on 1/9/2026

    Thank you for the evaluation provided.

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

    Dr Liu was professional, thorough, caring and understanding. He took his time, explained everything and listened intently to my questions. I will most definitely recommend him to friends and family.

    5 out of 5 stars
    Reviewed on 10/24/2025

    Dr. Liu is excellent- he's been my pulmonary doc since 2009-I'm sticking with him. He conferred with a Hopkins infectious disease doctor to help find a way to make my life liveable.

    5 out of 5 stars
    Reviewed on 10/20/2025

    Always,very professional and u deter and ing personality

    5 out of 5 stars
    Reviewed on 10/17/2025

    Wonderful

    5 out of 5 stars
    Reviewed on 8/1/2025

    Listened carefully took notes was genuinely concerned about my well being

    5 out of 5 stars
    Reviewed on 7/28/2025

    Dr.Liu is easy to talk to and answersAll my questions .

    5 out of 5 stars
    Reviewed on 7/25/2025

    Dr. Liu is wonderful. Professionally, he is top tier. He has excellent bedside manner.

    5 out of 5 stars
    Reviewed on 7/21/2025

    Dr Liu is absolutely the best. He is extremely knowledgeable, kind, listens to all my concerns.

    5 out of 5 stars
    Reviewed on 7/18/2025

    He is an excellent provider. Takes medical history very well.

    5 out of 5 stars
    Reviewed on 7/7/2025

    Dr Liu is the BEST!

    5 out of 5 stars
    Reviewed on 6/27/2025

    Dr liu excellent talking about my health and medicine