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Harpreet Tiwana, DDS, is a general dentist at Laguna Oaks Dental in Elk Grove, California. He has been working in the greater Sacramento region for over five years. 

He graduated from New York University in 2002 and completed his general practice residency in Chicago, Illinois. Dr. Tiwana then completed a mini-residency in pediatric dentistry from the University of Minnesota as well as one in endodontics (root canal treatment) offered by prominent endodontist Dr. John West at IDEA Academy in California. He has also been extensively trained by Dr. Michael Duggan, DDS, PhD, of The Duggan Institute of Dentistry in Costa Mesa, California.

Dr. Tiwana has taken several continuing education courses including courses offered by Dr. Gordon Christensen in Provo, Utah, and continually updates his knowledge through continuing education courses at the University of Pacific, San Francisco, and various other courses. 

He is committed to providing excellent care to his patients and also caters to fearful patients by providing nitrous oxide sedation. Dr. Tiwana enjoys treating both children and adults, and enjoys listening to his patients and helping them attain optimal dental health.

In his off time, Dr. Tiwana enjoys spending time with his family, reading, and traveling. 

Dr. Gaganjot Khera, DDS, is the owner and lead dentist at Signature Smiles Dental Group in Milpitas, California. With more than 15 years of clinical experience, she provides comprehensive family, cosmetic, restorative, and preventive dental care for patients of all ages. Dr. Khera is committed to helping patients achieve healthy, confident smiles through personalized treatment plans, advanced technology, and compassionate care. A graduate of the University of Oklahoma College of Dentistry, Dr. Khera combines evidence-based dentistry with a gentle, patient-centered approach. She offers a wide range of services, including preventive exams and cleanings, cosmetic smile enhancements, Invisalign® clear aligners, veneers, teeth whitening, crowns, root canal therapy, and emergency dental care. Known for her warm chairside manner, Dr. Khera takes the time to listen to her patients' concerns, thoroughly explain treatment options, and ensure every patient feels comfortable and informed. Her goal is to build long-term relationships based on trust, education, and exceptional clinical outcomes. Dr. Khera is an active member of the American Dental Association and the California Dental Association and remains dedicated to continuing education and the latest advancements in dentistry. She has been recognized as an America's Best Dentist recipient in 2024 and 2025 for her commitment to excellence in patient care. Fluent in English, Hindi, Punjabi, and Urdu, Dr. Khera enjoys connecting with patients from diverse backgrounds throughout the Bay Area. Outside the office, she enjoys traveling, exploring new cuisines, and spending time with her family. Specialties & Interests Family Dentistry Cosmetic Dentistry Invisalign® Clear Aligners Smile Makeovers Teeth Whitening Veneers & Crowns Root Canal Therapy Preventive Dental Care Emergency Dentistry Restorative Dentistry

Sierra Oaks Dental is a general dentistry practice in Sacramento, California. Under the care of skilled sedation and cosmetic dentist Peter Kim, DDS, and his compassionate team, the practice aims to deliver the best treatment outcomes for their patients. 

Dr. Kim has been serving the Sacramento community for over eight years, and he is well loved by families for his personalized approach to care and delivering excellent treatments. He always makes himself available to his patients, even after hours on weekdays, weekends, and holidays, when they have emergency dental concerns like root canals. 

He enjoys forming bonds with the patients in his care, developing lifelong relationships to ensure their beautiful smiles can last a lifetime. Dr. Kim grew up in the Bay Area, where he completed his undergraduate education at UC Berkeley and his doctorate in dental surgery at UOP, San Francisco. 

Dr. Kim holds dental implant certification from the world-renowned AIC Education Center and Invisalign® certification. He is highly skilled in a variety of cosmetic treatments, including professional teeth whitening and veneers. 

Through thorough oral exams, patient education, and transparent discussions, Dr. Kim and his staff look out for patients’ oral health and take care of their dental needs with the highest quality of care. The practice’s philosophy is based on integrity, and every team member is committed to empowering patients to make decisions that are best for their health.

Dr. Kim and the hygienists at Sierra Oaks Dental are honored to be a part of many people’s dental care, and are looking forward to serving new and returning families. Call the office to arrange a visit or schedule an appointment online today.

MODERN DAY DENTAL

We strive to use modern technology in order to promote ease and convenience for our patients. When you come in for a check up, we can show you first hand how your teeth look by taking high quality photos that are available to view immediately on our computer screens. Professional opinion, along with your personal preferences are all taken into consideration when we create your personalized treatment plan.

Modern technology in the dental field is top priority for Dr. Andrew Day. New technology and studies are presented everyday in dentistry. Dr. Day strives to learn and study the best of the best out of all that is offered. By frequenting seminars and continued education classes locally and nationally, only the best practices are considered when planning out each patient's treatment.

Meet Our Team    Meet Dr. Day

Raoul Shah, DDS, is an experienced general dentist at Willow Glen Dental Center in San Jose, California. Dr. Shah is dedicated to making all of his patients happy and enjoys building long-lasting relationships with each of them.

Dr. Shah was born and raised in Michigan. He attended the University of Michigan in Ann Arbor for his undergraduate studies, where he majored in anthropology-zoology and biology. He was always interested in the medical field and ultimately chose to pursue dental school at the University of Michigan, where he graduated in 2000.

From 2000 to 2005, Dr. Shaw worked in various dental offices in Michigan, Virginia, and Georgia, before finally moving to California. Dr. Shah previously owned a dental practice in Fremont, California, for 10 years before selling it and partnering with Meridian Dental Associates in 2015, now renamed Willow Glen Dental Center. 

Dr. Shah enjoys all aspects of dentistry and has taken numerous continuing education courses throughout his career. He specifically studied the placement and restoration of dental implants and has experience treating full-mouth implant rehabilitation cases. Dedicated to providing stellar service, Dr. Shah has worked with various consultants to find ways to improve the doctor-patient relationship and  ensure his practice is headed in the right direction. 

When he’s not in the office, Dr. Shah spends most of his time with his family. His wife, Neha, and their three kids keep him very busy, attending boy scout events, gymnastics competitions, and various dance performances. He also enjoys visiting wineries, playing the occasional round of golf, and traveling.