Lauren Mathias MD | Rheumatology | Downey | PIH Health
Lauren Marie Mathias

Lauren Marie Mathias MD


Internal Medicine and Rheumatology
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4.7 / 5 (based on 133 Reviews) View 31 Comments
  • Group

Lauren Mathias, MD is a rheumatologist with extensive training in autoimmune and musculoskeletal pathology. She chose rheumatology as a career due to her interests in immunology and longitudinal humanistic care. She strives to treat and improve her patients’ chronic conditions to help them lead fulfilling lives. 

Dr. Mathias has a special interest in musculoskeletal ultrasound. Her training from the Ultrasound School of North American Rheumatologists (USSONAR) and the University of Southern California culminated in a Musculoskeletal Ultrasound Certification in Rheumatology (RhMSUS) from the American College of Rheumatology. 

Outside of medicine, Dr. Mathias is an avid traveler and hiker. During her free time, she enjoys exploring the beautiful Southern California landscape and spending time with her family.

Office Information

Hospital/Group Affiliation

PIH Health Downey Hospital

PIH Health Whittier Hospital





  • Internal Medicine
  • Rheumatology


Medical School

University of Oklahoma College of Medicine (Oklahoma City)


LAC + USC Medical Center


LAC + USC Medical Center


LAC + USC Medical Center

Board Certifications

  • Internal Medicine
  • Rheumatology

Patient Reviews

April 25, 2022
The nurse who attend was kind and respectful
March 29, 2022
The doctor was patient, compassionate and professional with quality time.
March 29, 2022
The doctor was very comfortable to relay any messages, to enter feedback was very grateful. Thank you.
March 28, 2022
Everything was perfect. The doctor was so professional, and very, very nice. Thank you.
March 24, 2022
Dr. Mathias is wonderful! So kind and caring.
March 24, 2022
She was there for me
March 21, 2022
Dr. Mathias is WONDERFUL!!! She has helped me so much!!
March 16, 2022
The doctor ordered an x-ray for me and I went to the hospital immediately after I finished with her. Wait time 1 hour and 1/2. Time for the x-rays 5 minutes . Thanks
March 15, 2022
Dr. M is a breath of fresh air! She took the time, listened and did her research regarding my many chronic conditions. Well done. (PHI removed)
February 28, 2022
I received a call before the appointment saying my insurance is not accepted by PIH. I have been using this same insurance, and I have secondary insurance, for many years. Not sure why I received this call, and it was not helpful. They also asked me to pay the $61 I owed. A very small amount I could have paid when I visited, I did not really need to be called.
February 24, 2022
She made me very comfortable throughout the procedure.
February 07, 2022
Well, I was very satisfied with the consultation that the doctor gave me and yes I would recommend her 100%, thank you.
January 26, 2022
Yes, Dr. Mathias, she made me feel so comfortable and of course, I'm going to come back with her, you know to check on me because she make me feel so good, and she helped me a lot, she listen to me and you make me feel like she care about me, about my health, so thank you very much and congratulation for the doctors. Thank you.
January 25, 2022
All was very good. We are happy with the care they gave us.
January 24, 2022
I feel she was truthful with me, and when I asked her something, she told me what I needed to hear...not what I wanted to hear, what I needed to hear.
December 16, 2021
Question 1 was supposed to be 4 but I didn't know there was a 4. So yeah, Dr. Mathias did excellently well and she is confidence with her patients and was cautious and care. Okay. Thank you very much.
December 14, 2021
hi, so I was just there a few days ago and I have swollen knee and, you know, she, she thought that there is fluid but it was no fluid in my knee and she put she stick the needle in my knee. But actually I think I I felt that the needle actually touch my bone. The bone service. So I was worried about if my bone or the knee cap blacken or something. So that was very not necessary because there was no fluid and also I was just you know, I think that you need to touch my bone which shouldn't touch. So yeah, that's it. Everything else is good.
December 14, 2021
The doctor was very nice and helpful and explained everything and also answered all of my questions. I did not feel rushed. The only problem was that I was called in 45 minutes later than my scheduled time.
November 23, 2021
She was very nice. She was very thorough.
November 22, 2021
She was patient and clear. Very attentive and offer additional suggestions beyond other doctors.
November 16, 2021
Dealing with chronic illness required an immediate appointment. Dr. Maehara was not available, but he informed me earlier that Dr. Mathias had joined PIH and gave me a flyer introducing her to us. So all that to say, having her made it easy for me to be seen the next day. She covered everything very well, clear and helpful. I was concerned we'd have to review everything to bring her up to speed but she was on top of my history and treatments and covered all my concerns.
November 16, 2021
Even though I have Medicare and my plan limits a lot, you guys have always been able to see me within a reasonable amount of time. The one time I had an emergency, they were able to see me immediately even though it was almost after-hours.
November 15, 2021
I felt like I was being heard and the provider did and is doing everything she could to help alíviate my pain.
November 12, 2021
It was my first medical appointment with Dr. Mathias and I really liked the attention and explanation he gave me. An excellent Doctor.
November 12, 2021
Concerned with front office staff and someone had brought their child to work the day I was there. The boy was standing around at the front desk with 3 of the receptionists while they were working. I saw him at the beginning of my appointment back there. I was wondering if he was vaccinated? After my appointment when I was leaving, he was still there hanging around the computers. This does not seem safe. Even if he was a child of one of the physicians, still very unappropriate. Boy appeared about 10-11 years old. I didn't think the front desk people seemed very centered on patient care.
November 09, 2021
Although I seen a new rheumatologist at this location, she listened to what I had to say and she was very attentive and explained everything thoroughly
November 08, 2021
This doctor was very informative, and she was very pleasant. Had a good bed side manner, and I enjoyed meeting her. Thank you.
October 29, 2021
I'm happy that everything was explained to me and the appointment wasn't rushed
October 07, 2021
I think that you could improve by giving the patients their appointments with in a timely manner. I had to wait almost 3 months to see a specialist in rheumatology and the rheumatologist of the first visit, did not even accept the was not even interested, really in the letter of the paperwork. That was mailed to me regarding my house and all the questions were questions from their office. So I felt I felt like it was a little bit concerning to know that something that had taken over an hour worth of my time to fill out.does not even acknowledged, or taken into consideration. Another thing also felt was a little bit concerning besides the letter and
October 07, 2021
I am very satisfied with my doctor, he gave me a lot of confidence, he was very kind, and he helped me a lot for me to feel much better, thank you very much, excellent
October 04, 2021
Amazing Doctor, very knowledgeable about my condition. I completely trust this provider with my care plan.
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