Dr. Brian O'Sullivan, MD

Dr. Brian O'Sullivan, MD

Internal Medicine  ·  
Male  ·  
Age 51
Dr. Brian O'Sullivan, MD is an internal medicine specialist in Centennial, CO and has been practicing for 22 years. He graduated from Dartmouth Med in 1993 and specializes in internal medicine.

5555 E Arapahoe Rd

Centennial, CO 80122

Contact Information

Insurance Accepted

  • Kaiser Permanente

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Dr. O'Sullivan's Experience

Dr. O'Sullivan's experience matches your search based on the following criteria:
  • Based on total number of patients treated over the last 12 months
  • Specializes in Internal Medicine
  • Board certified in Internal Medicine
  • No malpractice claims found
  • No sanctions found
  • No board actions found

Care Philosophy

This content was provided by Dr. O'Sullivan "Health care leader whose mission is to keep you healthy. Under-one-roof convenience, 24-hour advice nurse, and online access to manage your health - anytime."

1  Specialties

  • Internal Medicine

1  Board Certifications

  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

83  Conditions Treated

Read Less

4  Procedures

Background Check

0 Malpractice Claims

No malpractice history found for Colorado.

0 Sanctions

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

0 Board Actions

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


  • Dartmouth Med
    Medical School | Graduated 1993
  • Wilford Hall Med Ctr
    Internship Hospital | Completed 1994
  • Wilford Hall Med Ctr
    Residency Hospital | Completed 1996

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. O'Sullivan has no media or publications listed.

Languages Spoken

  • English

Memberships & Professional Affiliations

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

Dr. O'Sullivan's Reviews

Likelihood to recommend Dr. O'Sullivan


Based on 6 reviews

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Average Wait Time
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Dr. O'Sullivan's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Brian O'Sullivan, MD
Dr Sullivan was on time & devoted much appointment time to asking me questions about my pain. He also did a physical exam & thoroughly explained the diagnosis , test that he ordered & rationale for the medication . He answered my questions & explained the follow-up. I am pleased and will not...Read More
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Helen Ricles in Centennial , CO – Oct 24, 2017
Hi Helen, thank you for sharing your experience...Read More
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Dr. O'Sullivan is very personable, professional and thorough. He listens carefully and asks good questions. He and his staff seem to be very proactive, spelling out where we are and what should come next. I feel very safe in his care.
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Barb Stuart in Centennial, CO – Aug 01, 2017
Hi Barb. Thank you for sharing these kind words...Read More
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My husband just saw Dr. Sullivan yesterday for a wellness check. He had not seen a Dr for over 20 years up to that point. He found Dr. Sullivan to be very professional , with a great bedside manner. He was very likable and easy to talk to, and he took ample time with my husband doing all the tests...Read More
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shannon f in Littleton, CO – May 07, 2017
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