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David R. Thomas, MD

Photo of David R. Thomas, MD
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My specialty:

My provider affiliation:
Kaiser Permanente provider

I speak: English

My gender: Male


Find out about

Where I practice

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  • Pharmacy services
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About me

I grew up in Arizona, which is also where I completed medical school and my pediatric training. While I made the decision to become a physician in high school, I have always enjoyed many areas of medicine and didn’t decide on pediatrics until I was in medical school. I moved to Colorado to enjoy outdoor activities. Since residency I have been in private practice and worked at Kaiser Permanente, practicing both pediatrics and medical informatics. As my kids have grown and the opportunity to return to Kaiser Permanente came my way, I jumped at the chance to return to the style of practice that I feel is best. Practicing pediatrics at Kaiser Permanente allows me to care for children the way I was trained to do, in an environment that is supportive of both the physician and the patient.

About my practice

I have always enjoyed interacting with children and I try to get them involved in their own care. As the kids get older I encourage them to talk to me about their health and have an understanding of what they can do to maintain or improve it. I frequently find myself agreeing with the old saying that laughter is the best medicine and bring humor into my interactions with patients and families, while being serious when needed. During your visit, I strive to educate your family on how to care for yourselves and provide the information you need to join with me in making health care decisions. I feel that this results in quality care that makes everyone more comfortable.

How I thrive

I can frequently be found in the mountains hiking, biking, skiing and camping. I also enjoy motorsports such as riding ATVs, dirt bikes and boating. I do most of my own home and yard maintenance along with car care. This gives me more ways to relax as well as something I can take pride in. I feel staying busy in a variety of activities is a key to having a balanced life. Laughing and enjoying life may be the best path to good health. This is what I try to do both at work and on my own time.

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My office

Languages spoken by medical staff

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Medical groups and plans

Colorado Permanente Medical Group

Pediatrics Department name
4318 Trail Boss Dr., Suite 100, Castle Rock, CO 80104
List Header Plans Accepted
  • HMO
  • Medicare Senior Advantage

Contact information

  • Appointments/Cancellations/Information
  • 303-338-4545

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My training, certifications & licensing

Medical school

University of Arizona College of Medicine
Tucson , AZ

Board certification


AM BD of Pediatrics

To verify board certification for an individual practitioner, please visit the American Board of Medical Specialties, the American Medical Association, or the American Osteopathic Association websites.

Medical training



Tucson Hospitals Medical Education Program Inc
Tucson , AZ



Tucson Hospitals Medical Education Program Inc
Tucson , AZ

Joined Permanente Medical Group


Provider ID

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My hospitals

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Information in this online directory is updated periodically and applies to commercial plans underwritten by Kaiser Foundation Health Plan of Colorado. The availability of physicians, hospitals, providers, and services may change. To verify whether a provider accepts Kaiser Permanente plans, contact the provider directly. Current provider information is available at This information is updated within 72 business hours of receipt from providers. Kaiser Permanente of Colorado attempts to ensure the online directory contains up-to-date information. However, providers are responsible for notifying of any changes to their information, and untimely communication may result in outdated provider information appearing on the website. The printed directory is current as of the date of publication. Kaiser Permanente is not responsible for use of outdated directories.

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  • Size and demographics of the population to be served;
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  • Application of rigorous credentialing criteria encompassing but not limited to educational training, licensing, professional experience, board certification, and professional references.

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The TTY number is now 711 for all KPCO

You can also call the State of Colorado Board of Medical Examiners at (303) 894-7690.

Referrals to affiliated/contracted physicians/providers in Denver/Boulder

Affiliated/contracted physicians/providers are not part of the Colorado Permanente Medical Group (CPMG). They are physicians/providers who have a contract with the CPMG.

If your CPMG physician decides that you require covered services not available internally from CPMG, he or she will refer you to an affiliated/contracted physician/provider.

You must have a written referral to the affiliated/contracted physician/provider in order for Kaiser Permanente Colorado to cover the services. A referral is a written authorization from Kaiser Permanente for you to receive a covered service from an affiliated/contracted physician/provider.

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