Dr. Mark B. Ringer | Pomona, CA | Emergency Medicine

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Dr. Ringer graduated from the Loma Linda University School of Medicine in 2020. He works in Pomona, CA and 2 other locations and specializes in Emergency Medicine. Dr. Ringer is affiliated with Troesh Medical Center, San Antonio Regional Hospital and Pomona Valley Hospital Medical Center.

4.4

7 Ratings
6 years of experience
Loma Linda University School Of Medicine
7 written reviews
1 specialty
3 hospital affiliations
4 office locations
Male

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Ringer's Ratings and Reviews

4.4

7 Ratings with 7 written Reviews

Average Wait Time 51 Minutes

How was your appointment with
Dr. Ringer?

Patients’ Perspective

Gave an accurate diagnosis: (6) Did WellNeeds Improvement (1)
Had a good bedside manner: (6) Did WellNeeds Improvement (1)
Spent time with me: (6) Did WellNeeds Improvement (1)
Provided follow-up after the visit: (6) Did WellNeeds Improvement (1)
Flexible scheduling: (5) Did WellNeeds Improvement (1)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

7 ratings & reviews

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Showing 1 to 7 of 7 reviews

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Great doctor especially if you're bringing in an older family member or friend. He took time to answer all my dad's questions and explained things well. I know my dad was nervous and hates hospitals so it was nice that Dr ringer was the one to see him. My dad felt much better after asking his questions and getting a better idea of what was going on.

March 24th, 2026

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I'd like to say thank you to Dr. Ringer who treated my daughter in Pomona and I believe saved her live. I am grateful he listened to all my concerns and was able to identify the problem. great care!

December 14th, 2025

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Good doc, very calming. Thank you for make it easy as possible

August 29th, 2025

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great doc, made it an easy visit. long wait time at hospital but good care when i got seen.

August 22nd, 2025

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I’m very thankful for the care I received from Dr. Ringer during my ER visit. He was attentive and thorough, making sure all my concerns were addressed. He explained my treatment clearly and gave me helpful guidance for follow-up at home. His kindness and professionalism made a stressful situation much easier.

August 22nd, 2025

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Dr. Ringer was a great doctor. He took his time and was interested in whar I shared. He explained things very well and make me feel comfortable. I appreciated that he took extra time to sit with me and help me understand what was going on with me.

August 22nd, 2025

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I brought my elderly father to Pomona Valley Hospital for evaluation and was seen by Dr. Mark Ringer. Unfortunately, our experience with him was deeply disappointing. During the evaluation, Dr. Ringer was rude, dismissive, and made my father feel like a burden. He downplayed my father’s symptoms and implied that he should not have come to the ER. Unsatisfied with the care provided, we sought a second opinion at USC, where another physician conducted a thorough evaluation. A CT scan ordered there revealed a hemorrhage, which was missed during our visit to Pomona Valley. We don’t typically leave reviews, but given these findings and the discomfort caused by Dr. Ringer’s behavior, we feel it is important to share our experience so others are aware. If you have also experienced substandard care or mistreatment from this physician, we strongly encourage you to report your concerns. It could save a life.

December 1st, 2024

Pomona Valley Hospital Medical Center

1798 N Garey AvePomona, CA 91767

Tel: (909) 865-9500

Dr. Mark Benjamin Ringer

11234 Anderson StLoma Linda, CA 92350

Troesh Medical Center

11234 Anderson StLoma Linda, CA 92350

Tel: (909) 558-4000

San Antonio Regional Hospital

999 San Bernardino RdUpland, CA 91786

Tel: (909) 985-2811


Dr. Mark Benjamin Ringer	Christopher Carleo, MD	Dr. Frank Byoung Lee, MD	Dr. David Anthony Martinez
Emergency Medicine	Emergency Medicine	Emergency Medicine	Emergency Medicine
	Accepts New Patients	Accepts New Patients
4.4 (7 Ratings)	4.3 (3 Ratings)	5 (2 Ratings)	0 (0 Ratings)
6 Years of Experience	28 Years of Experience	23 Years of Experience	10 Years of Experience
No Virtual Visit Option	Virtual Visit Available	Virtual Visit Available	No Virtual Visit Option
	Speaks English	Speaks English, Spanish, Tagalog, Portuguese
Pomona , CA	East Setauket , NY	Allen , TX	Baldwin Park , CA
Med School: Loma Linda University School Of Medicine	Med School: Suny Stony Brookhealth	Med School: New York Medical College	Med School: St Georges University School Of Medicine
Current Profile	View Profile	View Profile	View Profile

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Emergency Medicine

MEDICAL LICENSE

Medical Doctor, California, 2026, Active

EDUCATION & TRAINING

Medical School

Loma Linda University School Of MedicineGraduated in 2020

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Does Dr. Mark Ringer accept my insurance?: You can see the insurance plans that Dr. Mark Ringer accepts on their Vitals profile.
Which hospitals is Dr. Mark Ringer affiliated with?: Dr. Mark Ringer is affiliated with Troesh Medical Center, San Antonio Regional Hospital, and Pomona Valley Hospital Medical Center.
How can I make an appointment with Dr. Mark Ringer?: You can find contact information for Dr. Mark Ringer here on Vitals.
Is Dr. Mark Ringer accepting new patients?: Dr. Mark Ringer has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Where is Dr. Mark Ringer's office located?: Dr. Mark Ringer's office is located at 1798 N Garey Ave, Pomona, CA, 91767.

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