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Hailyn Nielsen
4.9 out of 5 (53)
Hailyn Nielsen

Hailyn Nielsen, MD, PhD

Rheumatology

Rheumatology Clinic
400 Parnassus Ave., Floor B1,
San Francisco, CA 94143
(415) 353-2497
4.9 out of 5 (53)
Virtual visits available
4.9 out of 5 (53)
Virtual visits available
Rheumatology Clinic
400 Parnassus Ave., Floor B1,
San Francisco, CA 94143
(415) 353-2497

About me

Pronouns: She | Her | Hers

Insurance plan info

Dr. Hailyn Nielsen is a rheumatologist who cares for patients with autoimmune, autoinflammatory and arthritic conditions. When not working with patients, she is working in the lab to better understand how the immune system functions.

Nielsen earned her medical degree and a doctorate in molecular microbiology and microbial pathogenesis at Washington University School of Medicine in St. Louis. She completed a residency in internal medicine and a fellowship in rheumatology at UCSF.

  • Board Certifications

    American Board of Internal Medicine, Rheumatology

    American Board of Internal Medicine, Internal Medicine

  • Fellowships

    UCSF Graduate Medical Education, Rheumatology

  • Residencies

    UCSF Graduate Medical Education, Internal Medicine

  • Internship

    UCSF Graduate Medical Education, Internal Medicine

  • Degree

    MD, Washington University School of Medicine in St. Louis

Where I see patients (1)

    My reviews

    4.9

    Overall Experience
    53 Ratings
    About our process
    Nov 21, 2025
    Dr. Nielsen has been amazing in managing my condition.
    Nov 14, 2025
    Doctor Nielsen is very kind, patient and thorough.
    Sep 05, 2025
    As a patient of Dr. Nielsen I have to say that she is always attentive to my concerns and is careful about my treatment.
    May 30, 2025
    Dr Nielsen is very patient with me
    Feb 23, 2025
    Dr. Nielsen is a very caring and knowledgeable doctor. I feel lucky to be in her care for my autoimmune issues.
    Feb 18, 2025
    Dr. Nielsen was extremely kind, caring, and knowledgeable. She listened to everything I had to say and was very articulate when answering my questions. Not once did I feel rushed or not listened too. She spent over an 1 1/2 hours listening, evaluating, and answering my questions. By far one of the best doctors I have had.
    Feb 14, 2025
    Excellent experience I felt Hurd ,helped ,seen
    Feb 14, 2025
    Dr. Nielsen is great! Always listens and gives me straight forward answers.
    Aug 25, 2024
    Stellar experience
    Aug 05, 2024
    Dr. Neilson is an outstanding doctor, and I am very lucky to be one of her patients. Dr. Nielson is proactive, communicates very clearly, and is a true partner in keeping me well.
    Jul 30, 2024
    Dr Nielsen was excellent
    Apr 19, 2024
    Outstanding. Really took time to listen. Squeezed me in for a last minute appointment. She's wonderful.
    Apr 12, 2024
    Dr Neilson took her time, quizzed me deeply and was truly interested in finding the details of my situation. A warm problem solver. I felt her care and concern. Her diligence to resolving my situation was exemplary. Thank you for you time.

    Selected research

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