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Majonel L Ontanillas, MD

Optum Provider

Specialty

Internal Medicine

Languages

English

Seeing patients at

Patient Reviews

Patient review summary

Learn about our survey

5

4

3

2

1

4.4

127 reviews

  • Apr 30, 2026
    Verified Review

    I did all the blood tests and wanted to know the results about blood sugar and cholesterol and other I forgot to ask and he didn't do his job to share them with me and on my way out I realized and returned to the nurse and while I was waiting for him he told her falsely that he already shared the information with me, I really wasn't appreciated since I went through all the trouble for the blood tests and then seeing him for nothing, I reported it and I was told someone would be calling me and discussing the results with me but I never received any calls

  • Apr 27, 2026
    Verified Review

    He is good & listens what ever is your problem regarding your health & explain clearly

  • Apr 26, 2026
    Verified Review

    Because he is paciente and calm and listen to me all my problems.

  • Apr 23, 2026
    Verified Review

    We're sorry to hear he's retiring. We'll miss him

  • Apr 14, 2026
    Verified Review

    Yes he very helpful and caring ,and you feel so much better after you see him, Thank you Dr. Ontanillas.

  • Apr 13, 2026
    Verified Review

    Doctor Ontanillas is very good at helping me managing my health. I give him high marks in all aspects of working with me.

  • Apr 12, 2026
    Verified Review

    A very caring doctor

  • Apr 3, 2026
    Verified Review

    Best Doctor I've ever had

  • Mar 28, 2026
    Verified Review

    Very satisfied, very professional

  • Mar 27, 2026
    Verified Review

    He is very caring and understanding.

  • Mar 26, 2026
    Verified Review

    He listens to you and explains everything.

  • Mar 26, 2026
    Verified Review

    Doctor Ontanillas has been my doctor for over 10 years and he has taken excellent care of me. He is very friendly and feels like family to me.

  • Mar 24, 2026
    Verified Review

    Listens,advises,courtious,knowledgeable,good thinker

  • Mar 21, 2026
    Verified Review

    The doctor is considerate answers questions and listens

  • Mar 21, 2026
    Verified Review

    Best primary physician I’ve ever had

  • Mar 20, 2026
    Verified Review

    Dr. Ontanillas has always asked and listened to my needs, and he always takes time to address the best course of actions when needed.

  • Mar 14, 2026
    Verified Review

    Very communicative

  • Mar 12, 2026
    Verified Review

    Medication he prescribed has really worked well 👏

  • Mar 7, 2026
    Verified Review

    I've been a Patient with Dr Ontinillas for many, many years and Dr Ontinillas is Amazing in every possible way! Five Stars!!

  • Mar 7, 2026
    Verified Review

    i met him for the first time at my latest visit to SMA. right now, i like him. he talks to you, not at you. he listens. i am hopeful.

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  • Gender

    Male

    Board certifications

    American Board of Internal Medicine

    Licenses

    NV, 12413

    Employed or contracted

    Employed

    Network Name

    OptumCare Network of Nevada

    PCP ID

    UHC HMO & D-SNP ID - 00040006026, UHC PPO ID - 00040357514, Humana ID - 000408002

    NPI

    1235105313

    Hospital affiliations

    Milford Regional Medical Center