background
background
Dr. Mark Obrien, DO

Dr. Mark Obrien, DO

Internal Medicine*
35+ years of experience

Dr. Mark Obrien, DO is an internist in Oceanside, CA and has over 35 years of experience in the medical field. He graduated from Michigan State University College of Human Medicine in 1987. He is affiliated with Tri-City Medical Center.

4 Star Rating
Based on 4 reviews 4 Star Rating (4 reviews)

Practice

4002 Vista Way Oceanside, CA 92056

Experience Check

Search for experience in a specific area

Dr. Obrien's Reviews

Likelihood to recommend Dr. Obrien

4.0

4 ratings, 4 with a written review
5 Star
75%
75%
4 Star
0%
0%
3 Star
0%
0%
2 Star
0%
0%
1 Star
25%
25%

Your trust is our top concern. Learn more.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

RecentHighestLowestMost Helpful
What went well
  • Listened & answered questions
  • Staff friendliness
  • Appointment wasn't rushed
What could be improved
No results
Helpful
Chris Harper – Mar 15, 2025
×Post a ResponseAre you Dr. Mark Obrien, DO?
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Tim H – Feb 14, 2025
×Post a ResponseAre you Dr. Mark Obrien, DO?
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Sherry H. – Feb 14, 2025
×Post a ResponseAre you Dr. Mark Obrien, DO?
What went well
No results
What could be improved
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
Helpful
Mar 28, 2016
×Post a ResponseAre you Dr. Mark Obrien, DO?

Leave a review

How was your experience with Dr. Obrien?

About Me

biography

Dr. Mark Obrien, DO is an internist in Oceanside, CA and has over 35 years of experience in the medical field. He graduated from Michigan State University College of Human Medicine in 1987. He is affiliated with Tri-City Medical Center.
  • Internal Medicine

  • Hospital Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Henry Ford Hospital

    Residency Hospital, 1991
  • Flint Osteo Hospital

    Internship Hospital, 1988
  • Michigan State University College Of Human Medicine

    Medical School, 1987
American Board of Medical Specialties®
American Board of Internal Medicine®
Internal Medicine
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Online Care for Prescription Refills (Sponsored)

Insurance Check

Search for your insurance carrier and choose your plan type

Locations

Practice

Tri-City Medical Center4002 Vista Way Oceanside, CA 92056
1

Practice

Wu Medical Corporation3156 Vista Way Ste 405 Oceanside, CA 92056
2
Office2604 El Camino Real Ste B Carlsbad, CA 92008
3

Affiliated Hospitals

  • Tri-City Medical Center

    4002 Vista Way
    Oceanside, CA 92056
    Recipient of 3
    hospital awards

    How patients felt about the care they received at this hospital.

    84%
    Patients said they were given information about recovering at home
    73%
    Patients said that doctors always listened to them and explained things well

    3% lower than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality