Dr. Robert Zajac, MD

Dr. Robert Zajac, MD

Infectious Disease Medicine | Male | 61 years old

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Care Philosophy

Dr. Zajac specializes in Infectious Disease Medicine and practices in San Antonio, TX. He practices at 1 location.

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Dr. Zajac's Experience

Experience Match

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Board Certifications

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Conditions Treated

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Procedures Performed

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Background Check

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Awards & Recognition

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Languages Spoken

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Memberships & Professional Affiliations

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Visiting Dr. Zajac

Dr. Zajac accepts 12 insurance carriers

Affiliated Hospitals

Hospital Quality

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Hospital Quality Awards


Dr. Zajac's Reviews

Likelihood of recommending Dr. Zajac to family and friends
based on 34 total surveys (6 with reviews)
Key Survey Insights
  • Trustworthiness
  • Helpfulness
  • Staff
  • Scheduling
Experience with Dr. Zajac
  • Level of trust in provider's decisions
  • How well provider explains medical condition(s)
  • How well provider listens and answers questions
  • Spends appropriate amount of time with patients
Dr. Zajac's Office & Staff
  • Ease of scheduling urgent appointments
  • Office environment, cleanliness, comfort, etc.
  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)
    31 – 45 minutes (31)
Open Full Survey+
Pleasanton, TX |
Waited over an hr pass my scheduled appointment to see the Dr.
San Antonio, TX |
Very nice gentlemen but he seems more like a Homeopathic DO than a MD. Just had no confidence in his treatment plan or lack thereof. Admittedly there was some complications but there was no Plan B. Last visit waited 1 1/2 hours.
in San Antonio, TX |
The Doctor was advised that a treatment decision was imperative, listened to the symptoms, was unable to respond, but promised to advise within 24 hours. A month later, in spite of written encouragement, which he chose to ignore, he never did comment, but instead insisted upon maintaining his prepaid fee, which was raised by 75% from the initial quotation, due to an error. In summary, a futile waste of time for which overbilled.
in New York, NY |
Very knowledgable, thorough explanation of condition and treatment. Strong leaning toward natural supplements to bolster medical treatment. Listens well, empathetic
in San Antonio, TX |
What a long wait! 2 hours! N I just needed a refill on my medication ....he spends 5 mins n the office w u!
in San Antonio, TX |
They rarely answer the phone and don't respond to questions. Seems to have less time for patients and doesn't develop rapport.
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Dr. Zajac's experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Infectious Disease Medicine
  •  Board certified in Infectious Disease and Internal Medicine
  •  No malpractice claims found
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
    What is a recognized doctor
  • Media & Publications

    Dr. Zajac has no media or publications listed.

Background Check

  • 0
    Malpractice Claims

    No malpractice history found for Texas.

    What is medical malpractice
  • 0

    No sanctions history found for the years that Healthgrades collects data.

    What is a sanction or disciplinary action
  • 0
    Board Actions

    No board actions found for the years that Healthgrades collects data.

    What are board actions

Background Check

Why It Matters: Dr. Zajac's Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Infectious Disease
  • Internal Medicine

Conditions Treated

Dr. Zajac does not have any conditions listed. If you are Dr. Zajac and would like to add conditions you treat, please update your free profile.


  • Medical School
    La State Univ Sch Of Med In New Orleans

    Graduated in 1981

  • Residency Hospital
    Wilford Hall Med Center Aetc

Languages Spoken

  • English

Memberships &
Professional Affiliations

Dr. Zajac does not have any memberships or affiliations listed. If you are Dr. Zajac and would like to add memberships or affiliations, please update your free profile.


  • Infectious Disease Medicine

Procedures Performed

Dr. Zajac does not have any procedures listed. If you are Dr. Zajac and would like to add procedures you perform, please update your free profile.