Matthew K. Nienaber, DO
Santa Monica, CA 90403
The Doctors of Saint John's - Santa Monica Primary Care
1821 Wilshire Boulevard, Suite 100, Santa Monica, CA 90403

2026 Golden State Patient
Experience Award Recipient
The Golden State Patient Experience Awards is Providence’s California-wide program, recognizing providers in Northern and Southern California who consistently deliver outstanding patient experiences, based on patient feedback and experience scores.
Insurances Accepted
This information provides an overview of accepted insurance plan types for new patients. Coverage may vary by specific plan. Please verify with your insurance provider before visiting us for care. Established patients should call to verify insurance acceptance.
About Matthew K. Nienaber
A West Coast native, born in the Bay Area and raised in the Pacific Northwest with one foot in the sand and one in the water. Caring and compassionate, working with his patients to provide individualized healthcare. With a strong passion for helping the underserved, he participates in medical missions to Africa, South America, and Mexico. Formerly a competitive dragon boat racer, who plays piano and bass, with an eye for restoring classic British race cars.
Western University of Health Sciences
2014
Arrowhead Regional Medical Center
2015
Arrowhead Regional Medical Center
Internal Medicin\e
2017
- American Osteopathic Board of Internal Medicine, Internal Medicine
1821 Wilshire Boulevard, Suite 100
Santa Monica, CA 90403
Providence Saint John's Health Center
Community Reviews
At Providence, we're dedicated to providing you quality, personalized health care. We are constantly striving to optimize your experience.
As part of ensuring you have a positive experience with Providence, our online provider directory includes ratings and patient comments for select providers. More about our survey.
Very good in all areas!
Providence Patient
Dr. Nienaber is very approachable, listens patiently to what I have to say and never makes me feel rushed.
Providence Patient
Dr. Mathew is an extraordinary physician, his kindness and compassion are so appreciated
Providence Patient
Mathew Nienaber is engaging genuinely concerned observant and gives good feedback!!
Providence Patient
Dr. Nienaber is excellent!
Providence Patient
Dr n always takes the time needed with his patients. He is also my husband's and moms dr. He listens and treats everyone with respect and tailors care to the individual
Providence Patient