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Our Medical Practitioners

Photo of Dr. Clayton De Jong

Clayton De Jong, MD


It has been my privilege to build my career and raise my family here in Long Beach.  The best part of being a physician is developing a true caring relationship that makes a difference in the patient being able to better understand, cope and recover from their illness.

Medical Education:



University of Iowa College of Medicine

Doctorate of Medicine

Iowa City, Iowa

Internship and Residency:



St. Mary's Medical Center

 UCLA School of Medicine

Los Angeles, CA

Chief Resident:


St. Mary's Medical Center

UCLA School of Medicine

Los Angeles, CA

Hobbies and Interests:

I enjoy the outdoors and my hobbies include baseball, bass fishing, golfing and photography. My wife and I have three great boys that I am very proud of and am active in my church.

Photo of Dr. Tyler De Jong
Tyler De Jong, MD

I'm proud to be a part of the group and I'm excited to join the practice.  It is an honor to follow in my father’s footsteps in becoming a physician. What I love most about it is being able to use my gifts and talents to help people in a real and tangible way. I look forward to the lasting relationships with my patient’s and their families.

Medical Education:


Keck School of Medicine- USC

Doctorate of Medicine

Los Angeles, CA

Internship and Residency:


Kaiser Los Angeles Medical Center

UCLA School of Medicine

Los Angeles, CA

Hobbies and Interests:

My wife and I love to travel and explore new places together. We enjoy hiking,

photography and being outdoors. Family is very important to both of us and we have deep roots here in the Long Beach and Orange County area.

PA photo (1).JPG

Quiana Sanchez, PA-C


As a lifetime Long Beach local, I am ecstatic to be joining the team at De Jong and De Jong and feel incredibly blessed to be able to serve this community. I strive to be an advocate by affirming patient dignity and delivering individualized care to meet each patient’s health goals. I look forward to building relationships with patients and contributing to this wonderful community.


University of California, Davis
Master of Health Science, Physician Assistant Studies
Davis, California

Hobbies and interests:
My hobbies include staying active through aerial silks and hiking. I am a voracious reader and love exploring the world with my family through travel and new cuisines.

Our Practice


Our practice has deep roots in Long Beach as it was first established in this location over 110 years ago. Dr. Clayton De Jong took over in the late 80's and his son Dr. Tyler De Jong is excited to continue the legacy. Ours has always been a private practice that focuses on quality patient care.  As specialists in Internal Medicine, we are well-equipped to meet your needs and take care of you in the community and in the hospital.  As primary care providers, we know it isn't just about treating a patient's disease, but rather building a relationship of trust to provide you the best care possible.


Latest Clinic News:


June 2016

The office had a major remodel to update floors, walls and add photo art taken by both Doctors De Jong to add a personal touch.  We hope you enjoy our new look.


July 2017


Dr. Tyler De Jong's first day as a full time physician in our practice.  He looks forward to meeting you!

Sept 2020

Nurse Practitioner Sarah Fihn joins the practice and is eager to help!

May 2023

NP Sarah Fihn starts a new chapter in her life out of state

June 2023

PA Quiana Sanchez joins the practice and is eager to help!

Photo of both Doctors
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