Meet the Team

Our Chiropractors

  • Donald P. Ringer
    D.C. Chiropractic Physician

    'I was first exposed to chiropractic after experiencing a disabling back injury. The treatment not only relieved my pain, it changed my life! I have dedicated my life to helping others benefit as I have. I truly welcome the opportunity to help you too.'

    Dr. Ringer combines a gentle touch with a scientific approach to provide fast-acting, long-lasting pain relief. During his 20 years of experience, Dr. Ringer has helped thousands of satisfied patients walk away from pain. When Dr. Ringer started his practice, he was determined not only to be your choice for fast and effective pain relief, but also to provide that care with friendliness, convenience and affordability.

    Chiropractic Experience:

    • Chiropractic Doctor: Palmer Chiropractic
    • Undergraduate: California State University Fresno
    • Board-Certified: National Board of Chiropractic Examiners
    • Clinical Fellowship: Palmer-West Clinic, Sunnyvale
    • Fellow: American Back Society
    • Member: American Chiropractic Association, California Chiropractic Association, San Joaquin Chiropractic Association
    • Qualified Medical Examiner for Work Comp Injuries: State of California
    • Qualified Expert Witness: California & Nevada Superior Court
    • Certified Industrial Disability Evaluator: California Chiropractic Foundation

    If you have any questions about our Tracy chiropractor, or would like to learn more about chiropractic care at Ringer Chiropractic, please call us at 209-835-2225 today!

  • Dr.
    Robert M. Marlowe

    'It is truly an honor to be a part of the Ringer Chiropractic Team! I am excited to have this opportunity to use my 15 years of experience to help patients obtain great results from excellent treatment given by caring doctors and office staff. I am looking forward to helping guide our patients in their care and improve their function!'

    Dr. Marlowe's passion for health and nutrition has inspired him to help others be an 'active participant' in one's own health. He has extensive experience and knowledge of various musculoskeletal conditions, the use of active rehabilitation, and treatment of occupational and sports injuries.

    'My first experience with chiropractic care occurred after a wrestling injury in high school. After receiving and discovering the benefits from my treatment, I began the quest to better understand 'health'. I dedicated my education towards this amazing field with a focus on natural healing which encompasses rest, nutrition, positive mental attitude, exercise and chiropractic adjustments.'

    Chiropractic Experience:

    • Doctor of Chiropractic- Life University; Marietta, GA
    • Board Certified- National Board of Chiropractic Examiners (Part 1, 2, 3 & 4)
    • Clinical fellowship- Life University; Marietta, GA
    • Certifications- Industrial Disability Examiner (certified by CCA-2002)
    • Medical Director for Basic Chiropractic Health Plan of CA (BCHP) from June 2005 to July 2008.

    Community Involvement:

    'I strongly believe the benefits of building a strong family foundation and giving back to your community are invaluable. I stand by the motto - Blessed to be a Blessing!'

    Dr. Marlowe has traveled to impoverished communities in Peru where he provided chiropractic care and helped address basic health issues & questions. Locally, he volunteers as a mentor for a church youth group and donates time at the St. Mary's Medical Clinic.

    Dr. Marlowe grew up and currently resides in Stockton, California with his wife and three children. He enjoys staying active by lifting weights, running marathons, training Brazilian jiu-jitsu, coaching youth sports, participating in church related activities, and making memories with his family.

Our Staff

  • Mindy Martinez

    Mindy joined the Ringer Chiropractic team in July 2013 as Billing Manager. She was previously the Office Manager for a doctor in the Livermore area. She attended Heald College and obtained her Diploma in Medical Assistant in 2011. Mindy brings a strong work ethic and professionalism to her position She grew up in San Jose and moved to Tracy in 2004., attending Merrill F. West High School. Mindy loves working with people, which shows in the interactions that she has with our patients and staff. We feel fortunate to have Mindy as a part of our management team.

  • Mireya Moreira-Torres

    Hi my name is Mireya. I am a mother of two children. I love being active and going on long hikes and doing CrossFit on my own time. I am a social person who enjoys interacting with people which is the reason I love my job. So, come on in today. I look forward to helping you on your quest for a healthier you.

  • Perla Zuniga

    Hello, my name is Perla, I am a middle child in a family of 5 not including my “fur” babies 2 dogs and a cat. My hobbies are simple anything nature and Disneyland. I’m a huge fan of both. I’m a very outgoing and I consider myself talkative person, so I can’t wait for you to come in to meet you.


Find us on the map

Office Hours

Our Regular Schedule


9:00 am - 12:00 pm

3:00 pm - 7:00 pm


9:00 am - 12:00 pm

3:00 pm - 7:00 pm


9:00 am - 12:00 pm

3:00 pm - 7:00 pm


9:00 am - 12:00 pm

3:00 pm - 7:00 pm


9:00 am - 12:00 pm

3:00 pm - 6:00 pm








Reviews By Our Satisfied Patients

  • "Dr. Ringer and his team are absolutely outstanding to work with whether you are post injury or just need a good adjustment. They are nothing but professional and helpful - even when you are being a challenging patient! Convenient evening appointments - I have never been turned away for a time to come in. Dr. Ringer taught me the correct exercises to help strengthen my neck and back and took this very fearful and cynical RN and made her a believer!!!! I now look forward to my adjustments because"
    Patricia G. February 2015