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Dr. Mary Grehian, MD

Dr. Mary Grehian, MD

Internal Medicine*
20+ years of experience

Dr. Mary Grehian, MD is an internist in San Diego, CA and has over 20 years of experience in the medical field. She graduated from Northwestern University Feinberg School of Medicine in 2002. She is affiliated with Kaiser Permanente Zion Medical Center. She is not accepting new patients.

2.5 Star Rating
Based on 11 reviews 2.5 Star Rating (11 reviews)

Practice

4647 Zion Ave San Diego, CA 92120
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Compare Dr. Grehian with our nearby Internists at Palomar Health.

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Dr. Grehian's Reviews

Likelihood to recommend Dr. Grehian

2.5
11 ratings, 8 with a written review
5 star
36%
36%
4 star
0%
0%
3 star
0%
0%
2 star
0%
0%
1 star
64%
64%

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If it were possible to give Mary Grehian Yoo Zero Stars I would do so.
What went well
No results
What could be improved
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Appointment was rushed
  • Didn't trust the provider's decisions
Helpful
Former Patient – Mar 10, 2025
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Wonderful Doctor
All was fine better than expected
What went well
  • I felt respected
  • Staff friendliness
What could be improved
No results
Helpful
Victor G – Feb 27, 2025
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Lacks bedside manner, patience and empathy
Don’t dare ask this doctor any questions. She takes it as a challenge to her education and experience, and will let you know she’s gone to medical school. (As if we weren’t here for that very reason.) Full of ego or insecurity, I’m not sure. But this is the first doctor I feel compelled to review to encourage other patients to avoid (or at least know what to expect).
What went well
  • Appointment scheduling
  • Staff friendliness
  • Appointment wasn't rushed
  • Wait times
What could be improved
  • I didn't feel respected
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Didn't trust the provider's decisions
2 others found this helpful
Helpful
mek – Jan 01, 2025
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DO YOURSELF A FAVOR AND DO NOT SEE THIS DOCTOR
All I have to say about her is that she is dismissive, has poor bedside manners, and is sarcastic and will treat you like you are stupid.
What went well
No results
What could be improved
  • I didn't feel respected
  • Didn't listen or answer questions
  • Didn't explain conditions well
4 others found this helpful
Helpful
Feb 24, 2024
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I have been a patient of Dr. Mary Grehian Yoo for ten years. She is very knowledgeable and her advice is always spot on. She allows ample time to discuss concerns and questions. Dr. Yoo is very friendly and compassionate, but expect her to be upfront and honest. I appreciate that her personalized treatment has provided me with positive results.
What went well
  • Office environment
  • 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
Barbara R – Jan 23, 2024
Barbara, thank you so much for sharing your... Read More
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Caring, knowledgeable, always follows through.
What went well
  • Office environment
  • 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
1 other person found this helpful
Helpful
Georgia – Jan 01, 2023
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I went to see this dr because I thought I was pregnant due to home pregnancy test and he told me no, it’s menopause ! I told her, I am only 40 please send me for bood test or refer to OBG, she said no!! Any way I had miscarriage after that and she didn’t care about it! Now I am 47 and still have my cycle ! Stupid dr !
What went well
No results
What could be improved
  • Didn't trust the provider's decisions
3 others found this helpful
Helpful
Shirin – Jun 10, 2022
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Lacks empathy/ ego driven
Very informed and a true expert, but her ego overrides her expertise. Cold and lacks compassion. Miserable experience.
What went well
  • Wait times
What could be improved
  • Didn't listen or answer questions
6 others found this helpful
Helpful
Apr 02, 2022
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Know Before You Go

About Me

care philosophy

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.

  • Internal 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.

  • Ucsd Medical Center - Hillcrest

    Residency Hospital, 2005

  • Northwestern University Feinberg School Of Medicine

    Medical School, 2002
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.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

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Locations

Practice

Kaiser Permanente San Diego Medical Center4647 Zion Ave San Diego, CA 92120
1
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