Balfour Dermatology

2221 Balfour Road, Suite A

Brentwood Ca, 94513          

  Dr. Robert E. Beer M.D.

  (925) 240-9116

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Dr. Robert E. Beer, MD

In 1999, Dr. Beer began his mission to bring quality medical care to East Contra Costa County. Dr. Beer founded Balfour Dermatology in Antioch in 1999. He believes in compassionate care though academic excellence and advanced diagnosis.

A skin cancer specialist and Mohs surgeon, Dr. Beer completed medical school with training at Baylor College of Medicine in Houston, Texas. He then performed his dermatology residency at Columbia in New York City.

Dr. Beer is a Fellow and Associate of the American College of Mohs Micrographic Surgery and Cutaneous Oncology. Dr. Beer completed an additional 3 years of training in Mohs and Laser surgery in Kansas City, MO. He is board certified by the American Board of Dermatology.

Additional training in Pathology at the University Hospital in Basel, Switzerland and Cosmetic Dermatology in Palm Springs, California. Dr. Beer was elected Chairman of Dermatology at the John Muir Medical Center in Walnut Creek, California. He serves as Dermatology Chairman since 2012.

Dr. Beer is a proud member of the medical staff at Sutter Delta Medical Center in Antioch. He performs his more complex surgical cases at the outpatient surgery center at Sutter Delta in Antioch or the John Muir Brentwood Surgery Center.

Christi Rodriguez, RN, MSN, FNP

Christi received her Master of Science in Nursing in 2000 from San Francisco State University.  She later returned to SFSU and completed her Family Nurse Practitioner Post-Master's Certificate in 2005.  She is a member of Sigma Theta Tau International Honor Society of Nursing and American Association of Nurse Practitioners.  She has worked in many areas of nursing including emergency and cardiac care.  

Christi was born and raised in the East Bay and is very excited to work in the same community.  Her joys in life, besides her family and career, are traveling, boating, and spending time with friends.  Christi loves being a nurse and she looks forward to working with you and providing you with excellent care and results!  

Denise Garcia, LE, CMT Esthetician

Denise is a Licensed Esthetician and Certified Skin Care Expert who joined the Balfour Dermatology team in 2005.   Her extensive training and vast knowledge of chemical peels, has made her one of the Bay Area’s leading providers of individualized beauty treatments.   She is passionate about refining skin peels and customizing treatments to enhance our clients’ natural beauty.

Certified by PCA Skin, Obagi Medical, and SkinMedica, Denise has also trained with Dr. Obagi in Beverly Hills and is a specialist with the Obagi System.  She received her Estheticians license in 1994, and has worked in many facets of the beauty industry including sales, management, spa settings and education.

Her knowledge of the chemistry of dermatological peeling is so vast that she is one of the few practitioners capable of developing customized peels uniquely tailored to each patient’s conditions and needs.  Furthermore, she educates and works with our clientele to develop at home beauty regimens that support and enhance their goals.

In addition to providing customized beauty treatments, Denise works with patients to help correct and treat a variety of skin conditions including acne, rosacea, aging skin, and sun damage, essential elements to helping our patients achieve younger and healthier functioning skin.

Balfour Dermatology’s unique medical environment allows Denise to combine her savvy knowledge with the use of medical grade products, treatments, and equipment.  Working closely with our patients, she believes in combining cosmetic treatments with other modalities such as lasers, fillers, and Botox, to achieve the best results.

Highly respected by her loyal clientele, Denise listens carefully to what our clients want, and is a critical component of helping them achieve the results they desire.

Supinder Tiwana, FNP

Supinder graduated with honors from Samuel Merritt University with Masters of Science in Nursing. Supinder developed a passion for skin related disease while experiencing first hand the effects of acne & psoriasis of her family members. Supinder specializes in Adult & Children's dermatology.

Alyssa Schenone, PA-C 


Alyssa has a Masters of Science from Concordia University, Wisconsin. Alyssa continues her family medical tradition. Alyssa's mother is a Registered Nurse & her Aunt, a Physician Assistant, both instilled her commitment and passion for patient care. Alyssa is thrilled to be back in her home town of Brentwood. Alyssa specializes in Adult & Children's dermatology.

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Timothy Ray, PA-C


Tim is happy to be returning to the East Bay with his family. Patient interaction has been his passion. Tim was exposed to the patient experience early on by his family's strong medical ties. Tim specializes in Adult & Children's dermatology.

Sandra Lee, FNP


Prior to joining the Balfour team, Sandra practiced dermatology in New York & Southern California. She specializes in Adult & Children Medical Dermatology & Adult Cosmetic Dermatology. Sandra began her early career as an esthetician & needed to fuel her quest for knowledge of skin conditions & diseases which led her into dermatology. Sandra grew up in the East Bay & is excited to continue her career serving her community

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Gretchen Tong, RT

Gretchen is a Radiation Therapist specializing in the treatment of skin cancers with over 30 years of experience in the field. Gretchen enjoys providing our patients a safe non-surgical option to remove their skin cancers.

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Bethany Collins, Treatment Coordinator

I grew up in the East Bay have been the Cosmetic Treatment Coordinator at Balfour Dermatology since 2013. I am a mom of three children and was born for motherhood. I have a nurturing personality and have always wanted to help people in whatever way I can, so I enjoy nurturing and caring for others through my work at Balfour Dermatology. I extend my nurturing spirit in both directions- caring for my patients as well as for the other people on staff. Our office maintains a family like atmosphere that extends beyond the staff to include our patients.


I am Dr. Beer’s Cosmetic Treatment Coordinator, Body Contouring Expert and licensed Medical Assistant. This is more than a mere job for me because I have a genuine passion for improving the lives of my patients and am dedicated to helping them achieve their aesthetic goals. Part of my success is following Dr. Beer’s core value of ensuring that all patients’ questions are answered and that their expectations are met or exceeded at every point, beginning with their first visit and continuing until treatment is completed.


My skills, training, and experience have prepared me to address a wide range of cosmetic procedures including Lasers, Injectables, both Botox and Juvederm and Spa Services.  I have had extensive training on our professional products as well as Vanquish BTL, which is the industry’s latest non-invasive Body Contouring device. I consult and administer Vanquish treatments to help patients sculpt and define each of their aesthetic concerns.


I’m dedicated to improving my patients’ skin problems from head to toe. My greatest payback comes from seeing my patients’ quality-of-life improve through the positive effects on their attitude, bearing, and self-confidence that result from the transformations we make in their appearance