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Deron Jean Tessier, MD

Photo of Deron Jean Tessier, MD
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My specialty:
Surgery: General

My provider affiliation:
Kaiser Permanente provider

I speak: English

My gender: Male


Find out about

Where I practice

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About me

Welcome to my Web page. I'm happy to have this chance to introduce myself to you and tell you about my surgical practice. I feel very fortunate to work at Kaiser Permanente because of all my wonderful colleagues and members.


I’m a native Southern Californian and was born at the Kaiser Permanente Fontana Medical Center. I grew up as a Kaiser Permanente member and was always impressed with the high quality of care that my family and I received. I completed my undergraduate studies at Cal State Fullerton, where I studied biology and biochemistry. During that time, I volunteered at Fontana Medical Center. After medical school and my surgery residency, I undertook further training in laparoscopic surgery at Washington University. I’ve given presentations at local, national, and international medical meetings and have published extensively in the field of general surgery. While at the Mayo Clinic for my residency, I received several honors. The one I’m most proud of is the Mayo Brothers Distinguished Fellowship Award, which is given once a year to the trainee at the Mayo Clinic who best exemplifies the qualities of the Mayo brothers in patient care, research, and outreach.

About my practice

My team and I strive to deliver the highest quality of care in a comfortable and compassionate way. Having trained with pioneers in surgery, I try to deliver the most up-to-date treatments. During my fellowship in minimally invasive surgery, I had the opportunity to learn from experts in laparoscopic procedures. I currently perform laparoscopic surgery for anti-reflux, paraesophageal hernia repair, achalasia (difficulty swallowing), and ventral and inguinal hernia repair. I also perform single-incision laparoscopic cholecystectomy (gallbladder surgery). I have developed a special interest in advanced abdominal wall reconstruction techniques and receive referrals from all over the Southern California Kaiser Permanente region. I'm a firm believer that all members who qualify should be allowed to benefit from laparoscopic procedures.

How I thrive

I enjoy spending my free time traveling the world and seeing other cultures. I work out as much as possible to keep physically fit. I also try to perform mission work as much as I can both in the United States and internationally.

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My office

Languages spoken by medical staff

Help is available in your language. Learn more.

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My provider type

Physicians and Surgeons

Medical groups and plans

Southern California Permanente Medical Group

List Header Plans Accepted
  • Exclusive Provider Organization (EPO)
  • HMO
  • Medi-Cal Managed Care
  • Point-of-Service Plan (POS)
  • Senior Advantage/Medicare Cost
General Surgery Department
9961 Sierra Ave, Fontana, CA 92335

I have admitting privileges at the following hospitals.

Contact information

  • Appointments/information
  • 1-833-574-2273 (toll free)
  • Information
  • 1-866-735-2922 (toll-free TTY for the hearing/speech impaired)

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My training, certifications and licensing

Medical school

UC Irvine Medical Center
Orange , CA

Board certification


American Board of Surgery

Medical training


General Surgery

Mayo Clinic-Arizona
Phoenix , AZ


General Surgery

Mayo Clinic-Arizona
Phoenix , AZ


Minimally Invasive and Bariatric Surgery

Washington University School of Medicine
St. Louis , MO

Joined Permanente Medical Group


Active license information

License number


License type


License issuing state


National Provider Identifier (NPI)

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My hospitals

All Kaiser Permanente physicians and podiatrists have admitting privileges or the ability to refer patients to our plan hospitals. Admitting privileges of other providers may vary by plan and facility. Contact your plan administrator for details.

9961 Sierra Ave, Fontana, CA 92335

I have admitting privileges at this hospital.

Setting the standard: Measuring care quality in our hospitals(PDF)

2295 S Vineyard Ave, Ontario, CA 91761

I have admitting privileges at this hospital.

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To find:

  • a provider's office hours, search our facility directory
  • providers in your plan or accepting new patients, call 1-800-464-4000 (toll free) or 711 (TTY for the hearing/speech impaired)

The information in this online directory is updated periodically. The availability of physicians, hospitals, providers, and services may change. Information about a practitioner is provided to us by the practitioner or is obtained as part of the credentialing process. If you have questions, please call us at 1-800-464-4000 (toll free). For the hearing and speech impaired: 1-800-464-4000 (toll free) or TTY 711 (toll free). You can also call the Medical Board of California at 916-263-2382, or visit their website.

We want to speak to you in the language that you’re most comfortable with when you call or visit us. Qualified interpreter services, including sign language, are available at no cost, 24 hours a day, 7 days a week during all hours of operations at all points of contact. We do not encourage the use of family, friends or minors as interpreters. Only the services of interpreters and qualified staff are used to provide language assistance. These may include bilingual providers, staff, and healthcare interpreters. In-person, telephone, video, and alternative modes of communication are available. Learn more about interpreter services

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Kaiser Permanente enrollees have full and equal access to covered services, including enrollees with disabilities as required under the Federal Americans with Disabilities Act of 1990 and Section 504 of the Rehabilitation Act of 1973.

Kaiser Permanente uses the same quality, member experience, or cost-related measures to select practitioners and facilities in Marketplace Silver-tier plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business.The measures may include, but are not limited to, HEDIS/CAHPS performance, member/patient complaints, patient safety scores, hospital quality measures, and geographic need. Members enrolled in KFHP Marketplace plans have access to all professional, institutional and ancillary health care providers who participate in KFHP plans’ contracted provider network, in accordance with the terms of members’ KFHP plan of coverage. All Kaiser Permanente Medical Group physicians and network physicians are subject to the same quality review processes and certifications.
Kaiser Permanente uses the same geographic distribution consideration to select hospitals in Marketplace plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business. Accessibility of medical offices and medical centers in this directory: All Kaiser Permanente facilities are accessible to members.


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