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21 Years
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Comprehensive Family Medicine & Urgent Care in Castle Rock
At Founders Family Medicine, we are dedicated to providing comprehensive, patient-centered healthcare for individuals and families in Castle Rock and surrounding communities. Established in 2005, our practice combines decades of collective medical expertise with a commitment to personalized care, offering services ranging from routine checkups to urgent care, preventive medicine, and chronic disease management. Our board-certified physicians and physician assistants prioritize building long-term relationships with patients, ensuring tailored treatment plans that address both immediate needs and long-term wellness goals.

With state-of-the-art facilities featuring on-site labs, X-ray services, and a secure patient portal, we streamline access to high-quality care while maintaining a welcoming environment. Our teams dedication to continuous learning and community health education underscores our mission to deliver reliable, evidence-based medicine that adapts to evolving patient needs. By integrating advanced technology with compassionate service, we strive to be the trusted healthcare partner for every stage of life.
Services
Family Medicine Urgent Care Preventive Care Pediatric Services Chronic Disease Management On-Site Diagnostics X-Ray Services Telehealth Visits Immunizations Wellness Exams
Details
  • Year established: 2005
Highlights and features
  • We offer 18 years of experience in family and urgent care medicine.
  • Our board-certified providers deliver personalized treatment plans for all ages.
  • We provide same-day appointments and extended hours for urgent needs.
  • Our practice features on-site diagnostics, X-rays, and a secure patient portal.
  • We maintain NCQA-recognized standards for patient-centered medical care.
Associations and certifications
  • National Committee for Quality Assurance (NCQA)
What people say
Excellent customer service Thorough and caring Minimal wait time Knowledgeable staff Trusted healthcare partner
Services
Family Medicine
Our family medicine practice provides lifelong healthcare for patients from newborns to seniors. Services include annual physicals, preventive screenings, chronic disease management, and acute illness treatment. Our providers build long-term relationships to address genetic, environmental, and lifestyle factors affecting health. With expertise in pediatrics, geriatrics, and womens health, we coordinate care across specialties while emphasizing patient education and wellness planning.
Urgent Care
Urgent care services treat non-life-threatening injuries and illnesses with extended hours and minimal wait times. We handle fractures, infections, allergic reactions, and minor trauma while offering X-rays and lab testing onsite. Our providers prioritize timely intervention for conditions requiring immediate attention but not emergency room resources, ensuring cost-effective care with seamless follow-up coordination.
Preventive Care
Preventive care focuses on early detection and health maintenance through screenings, immunizations, and lifestyle counseling. We offer cancer screenings, cholesterol checks, diabetes monitoring, and personalized nutrition/exercise guidance. By addressing risk factors proactively, we help patients avoid chronic conditions and reduce long-term healthcare costs through evidence-based interventions.
Pediatric Services
Our pediatric care covers well-child exams, vaccinations, and treatment for common childhood illnesses. Providers manage asthma, allergies, and developmental concerns while offering parental guidance on nutrition and safety. The practice maintains a child-friendly environment to ensure comfort during visits, with emphasis on building trust and establishing healthy habits early in life.
Chronic Disease Management
We specialize in managing diabetes, hypertension, arthritis, and other chronic conditions through tailored treatment plans. Services include medication management, lifestyle modifications, and regular monitoring to prevent complications. Our team collaborates with specialists when needed, using electronic health records to ensure continuity of care and patient empowerment through self-management education.
People
John T. Campbell
Physician
Dr. Campbell has practiced family medicine for over 25 years, joining Founders Family Medicine in 2006. He focuses on preventive care and mens health, emphasizing patient education and holistic treatment approaches.
Anthony Cerullo
Physician Assistant
Anthony Cerullo specializes in family practice and trauma medicine, with experience in rural healthcare settings. He prioritizes patient-centered care for acute and chronic conditions, including sports medicine and geriatrics.
Doris Kleinert
Physician
Dr. Kleinert provides comprehensive family care with a focus on evidence-based medicine. A former military physician, she treats patients across all life stages while emphasizing preventive health strategies.
Beth Hoekstra
Physician Assistant
Beth Hoekstra delivers personalized care with expertise in chronic disease management and preventive screenings. She maintains strong patient relationships through attentive communication and coordinated treatment planning.
Katie Masters
Physician Assistant
Katie Masters specializes in womens health and preventive care, conducting thorough well-woman exams and health risk assessments. She emphasizes patient education to promote long-term wellness.
Questions
What services does Founders Family Medicine offer?
We provide family medicine, urgent care, preventive screenings, chronic disease management, pediatric care, immunizations, and on-site diagnostics like X-rays and lab testing.
Do I need an appointment for urgent care?
Appointments are recommended but not required. We reserve slots for walk-in patients and typically treat urgent cases within an hour.
Are providers board-certified?
Yes, our team includes board-certified physicians and certified physician assistants with expertise in family medicine and urgent care.
How can I access my medical records?
Use our secure patient portal to view records, schedule appointments, and communicate with providers electronically.
What insurance plans are accepted?
We accept most major insurance plans. Contact our office for specific details about your coverage and billing.
Is telehealth available?
Yes, we offer telehealth appointments for non-urgent medical concerns, ensuring convenient access to care from home.
Videos
Reviews (6)
Christopher Thompson
Jun 10, 2022 Report
Wish I could share the same positive reviews that other people are sharing. I did not find the office to be warm at all. Very mechanical. That was my first and last time to use this clinic. I will give them credit for getting me back before my scheduled time. Ashley the PA spent less than 2 minutes in the room before sending me to get labs and then the tech wasn't sure how long it takes to get results.

It's day four and they still don't have the lab results back. Someone told me prior to going "they serve a purpose" and they weren't wrong lol. They served their purpose but I don't find them to be a fit when it comes to my primary care physician. If you are the type of person that just wants to get in and out of the office this place is for you. If you want to feel like the physicians and staff care about patients then I'd recommend finding another group.
Cindy Kennedy
Apr 15, 2022 Report
Customer Service is rare these days. My first visit was beyond my expectations. The office staff was kind, everything was automated and quick. There was barely any wait and the follow through was impeccable. The NP did an excellent job assessing. I will definitely go back.
Stephanie C.
Apr 07, 2022 Report
My husband and I are seen here and we always have such a wonderful experience! Dr. Campbell is great, and definitely worth the distance we travel to see him. He is extremely knowledgeable, friendly, and really takes the time to listen to our concerns. He also has a great sense of humor, and overall it is just such a rare find to have all these wonderful attributes in a doctor!
Kimberly Bonita
Apr 02, 2022 Report
Katie Masters takes the time to listen to you and offers many suggestions/solutions to health concerns. It's also nice they have someone to draw labs on site. The entire staff is wonderful, easy to get in touch with unlike the large corporate-style, hospital associated doctor's offices. Truly a good family medicine practice. Highly recommend.
Dylan Groat
Feb 21, 2022 Report
Founders family is a wonderful office! I will continue to visit them as long as I live in castle Rock. I had an issue and was able to get in same day. There was concern over the medication I needed and they accommodated me and took care of me. They are very professional staff and really do care about the patients.
Dave Maccracken
Feb 20, 2022 Report
Found her family medicine is a great primary Care and urgent Care facility. I have been going there for my primary care for about 5 years. The staff is great and seems to be always on time. Tony Cirillo is a great PA and always willing to help you out. I highly recommend this facility if you're looking for a primary care physician or an urgent care