Meet Dr. Brenda L. Kueckels

Best Upland Dentist | Dr. Brenda L. Kueckels, DDS

Dr. Brenda L. Kueckels, DDS

Dr. Brenda L. Kueckels received her dental degree from UCLA School of Dentistry in 2000. In 2001, she completed a General Practice Residency at the Loma Linda VA Hospital, where she received advanced clinical training. In 2016, Dr. Kueckels joined Dr. Van Doren in his state-of-the-art dental practice in Upland, CA. She purchased the practice upon his retirement in 2018.

Dr. Kueckels is experienced in basic oral surgery, periodontal health techniques, endodontics, prosthodontics, implant and pediatric dentistry. She is trained and certified in the use of dental laser therapy, as well as Invisalign and Lumineers techniques. She is an active member of the Academy of General Dentistry, SPEAR education and the prestigious Mt. Baldy Study Club, where members share a commitment to dental excellence and exceptional patient care.

Dr. Kueckels believes in providing dental care to her patients with excellence, compassion and integrity to be the best Upland dentist for all who see her. She strives to empower her patients through education so that they maintain happy, healthy smiles.

In her free time, Dr. Kueckels enjoys hiking, skiing along with landscape and wildlife photography. She also enjoys cooking, especially for happy occasions!

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Diana Garfias, DA

Diana joined our team after working in another dental office for several years. She earned her Dental Assisting diploma in 2013, and she is skilled in both front and back office procedures. She enjoys providing exceptional care to our patients while she continues her studies in pursuit of a career as a dental hygienist. In her spare time, Diana enjoys painting and going out for walks with her dog, Billy.

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Brenda Dunak, RDA

Brenda received her Registered Dental Assistant License in 2010. She interned at the office of Dr. Van Doren and continued to work with him until he sold the office in 2018. She stayed on with Dr. Kueckels so that she could continue to provide patients with the compassionate dental care that they were accustomed to. In her spare time, Brenda enjoys writing, knitting and gardening. She also loves spending time with her five grandchildren and her Black Labrador, Patience.

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Pam Mendez, RDH

Pam has been working in the dental field for forty-two years. She received her Registered Dental Assistant license and A.S. degree from Chaffey College in 1978. After obtaining her A.S. degree, she worked as an Orthodontic Assistant for fifteen years. She received her Registered Dental Hygiene license in 1994 from Pasadena City College and was awarded the In Clinic Professionalism Award. Since then, she has enjoyed working in general dentistry and periodontics. Pam worked with Dr. Van Doren for twenty-five years and continued with Dr. Kueckels when he sold the office in 2018. She is dedicated to her profession and passionate for the oral health care of her patients. In her spare time, Pam enjoys boating and camping with her husband.

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Eric Kueckels

Technical and Team Support

Quality We Stand Behind

At our practice, we want the absolute best for each patient that comes through our doors. We genuinely care about our patients and proudly stand behind our work for you.

Clinical Excellence

It is our goal to provide the highest level of quality dentistry for our patients, and we know that is only possible as we commit ourselves to diagnosing, treating and interacting with patients at the highest standard of excellence. We use top quality materials and laboratories. We don't skip steps. We work with careful, detailed expertise. Additionally, we are networked with outstanding doctors in the specialty branches of dentistry to ensure the most favorable outcomes. You deserve the highest quality of care, and we deliver.

Comfortable Environment

We're proud of the fact that we provide a safe and comfortable environment where patients are pampered from their very first visit with us! Our friendly team members will remain attentive to your needs and do everything they can to help you feel at ease. Your comfort is a top priority.

Honest, Customized Recommendations

We believe in practicing with integrity while finding the right solution for your needs. We will provide an honest evaluation of your oral health and offer only treatment recommendations that are within your best interests. If needed, we'll put our heads together with other trusted specialists to come up with the best, most comprehensive plan for your care. Our goal is to help you build a customized dental plan that will allow you to achieve lasting health in a way that aligns with your needs and goals. We seek to earn your trust.

Patient Education

Not only do we provide exceptional dental care, we also provide thorough patient education. We will teach you how to protect the smile you've worked so hard to achieve through customized, at-home hygiene protocols. Additionally, we will take the time to answer any questions you might have and address all concerns prior to any treatment. You will feel informed, knowledgeable and empowered to take the reins on a healthier quality of life.

Exceptional Team Members

Our team members are exceptional at what they do! We provide outstanding customer service for our patients and do so in a loving, caring and professional manner. We make your needs a priority and take the time to listen closely to you. You will be treated exceptionally well here! When you join our practice, you join our dental family tree!


If you value these qualities in a dental team, call us today! We’re passionate about your smile and passionate about helping you achieve optimal health!

Request an Appointment Today!

Office Hours

Mon 8am - 5pm
Tues 8am - 5pm
Wed 8am - 5pm
Thur 8am - 5pm
Fri 8am - 12pm