Call now 909.592.1961

Medical Weight Loss Clinic

Welcome to our practice—and to a thinner, more confident you. With our proven weight loss program, our patients enjoy a customized treatment plan to enhance your weight loss, improve your health, and renew your spirit. During your one-on-one treatment consultation, we will review your personal goals and develop a medically proven program designed just for you. Call to inquire about our state-of-the-art medical diet, nutritional supplements, and skin care products.

Safe and Secure Telemedicine Available

Thinner at Last
Medical Weight Loss Program

The Thinner at Last medical weight loss program is an effective physician-administered weight management system in the San Gabriel Valley in California. During your program, you will have access to a personal physician/nurse team. Each is available to discuss your progress, answer your questions, and consult throughout your treatment course. Clients love the Thinner at Last weight management program because there are no specialized foods to purchase or prepare, and no demanding diet to follow. This amazing plan has an astounding 95 percent success rate (10,000 patients since 1995)!

  • Diet
  • Exercise
  • Will Power
  • Self Control

With over two decades of experience helping clients look and feel their best, the Thinner At Last medical team are proud to help clients achieve their weight loss goals and age with grace. To learn more about our Thinner at Last diet plan administered by a qualified medical team, or to schedule a consultation for BOTOX, RADIESSE, or other non-surgical skin rejuvenation procedures, call 909.592.1961 or make an appoitment

What our patients are saying

Wonderful staff and great experience. I've been battling a weight problem for years and started looking around for a medicated diet program (I've tried every diet from Jenny Craig to HCG) and this is the only one that has worked for me. The office has a spa feel to it and I love going in for my check-ups.

- April M.*

I've been a patient of the practice for almost 10 years, and I would highly recommend this clinic for both weight loss and anti-aging therapies. Gail is warm and personable, and is always willing to take time to explain complex medical terminology and help me make the best decisions for my situation. I've referred others to this practice, and without exception all have been equally delighted with their results.

- Rick W.*
* Results may vary from person to person

Read Our Reviews On Yelp

    Make An Appointment

    About Us

    Since 1995, the Thinner At Last staff has built a lasting practice in Health and Wellness medicine. The staff are excited to present this informative website. They hope you will find it useful and visit it often. Gail Leroy is a Columbia University educated Registered Nurse and her specialty in health and wellness is what hundreds of patients attribute their new-found happiness with their overall weight and health. Gail Leroy and the medical staff are proud to have attained their level of expertise in everything having to do with looking and feeling good and they look forward to sharing their knowledge and enthusiasm with you personally.

    Business Hours

    • Tuesday -Thursday 8:30 AM - 5:00 PM
    • Friday8:30 AM - 1:30 PM
    Thinner At Last
    1305 West Arrow Hwy., Suite 107
    San Dimas, CA 91773
    Get Directions


      Make An Appointment