
Douglas Family Medicine
Quick Facts
| Practice Type | Hybrid |
| Location | Castle Rock, Larkspur, Sedalia, Castle Pines, Parker |
| Doctors | Douglas Hallmark MD, Family Medicine |
| Telehealth Type | Phone or video call |
| Insurance Accepted | Aetna, Anthem Blue Cross, Cigna Open Access, Humana, Medicare, Tricare, United Health Care |
| Telehealth Available | Yes |
About
At Douglas Family Medicine, Dr. Douglas Hallmark has spent more than two decades building a community-rooted family medicine practice in Castle Rock, Colorado. His goal from the beginning was to know his patients as people, not just as appointments. That philosophy shapes every aspect of how the practice operates.
The practice covers a broad clinical range, from annual physicals and preventive care starting at age two to women's health, hormone replacement therapy, and in-office procedures. Dr. Hallmark performs skin excisions, arthritic joint injections, and care of minor fractures on-site. An onsite phlebotomist handles lab draws, sending samples to LabCorp or an insurance-covered lab. The practice also offers CIMT testing to detect carotid atherosclerosis and fasting blood panels using advanced lipid screening. Patients can participate in phase 3 and phase 4 clinical research studies through a partnership with Northwest Clinical Trials. A concierge membership layer adds same-day appointments, direct physician access, and a dedicated care coordinator, while medical care continues to bill through insurance.
Details
Address
1189 S. Perry St., Suite 230, Castle Rock, CO 80104
Phone
(303) 688-3434Website
Visit websiteMembership Details
Concierge medicine membership fee; medical care billed to insurance separately. Concierge services cover non-health service amenities such as same-day appointments, direct contact with physician, care coordinator for scheduling/prescriptions/billing/insurance.
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Frequently Asked Questions
Douglas Family Medicine uses a hybrid model. Patients pay a concierge membership fee that covers enhanced-access benefits. These include same-day appointments, direct contact with Dr. Hallmark, and a dedicated care coordinator who handles scheduling, prescriptions, billing, and insurance questions. Medical care itself bills to your insurance separately, just as it would at a standard primary care practice.
No. Douglas Family Medicine provides standard primary care to all patients, billing through insurance in the usual way. The concierge membership is an optional add-on for patients who want enhanced access and a more streamlined experience. You can receive full family medicine care without enrolling in the membership.
Douglas Family Medicine sees patients starting at age two. Dr. Hallmark provides annual physicals and preventive care for children, adolescents, and adults. The practice also offers comprehensive women's health services, including well-woman exams and gynecologic care.
Yes. Douglas Family Medicine offers telemedicine as either a phone or video call with the provider. The practice schedules these visits at a specific time, just like an in-person appointment. Telemedicine visits bill to your insurance.
Dr. Hallmark performs a range of outpatient procedures directly in the office. These include skin lesion removal, skin biopsy, skin excision, arthritic joint injections, cryotherapy, and care of minor fractures and sprains. Handling these procedures on-site saves patients the time and cost of a separate specialist visit.
Douglas Family Medicine has an onsite laboratory with a registered in-house phlebotomist. The practice sends samples to LabCorp or an insurance-covered lab depending on your plan. The practice also offers CIMT testing to screen for carotid atherosclerosis and fasting blood panels using advanced lipid screening methods.
SottoPelle is a bioidentical hormone replacement therapy the practice offers for both men and women. Dr. Hallmark implants small pellets that release low doses of estradiol and testosterone steadily over three to six months. The therapy tailors hormone levels to each patient's individual needs.
Yes. The practice partners with Northwest Clinical Trials to offer patients access to phase 3 and phase 4 clinical research studies. Interested patients can ask the practice for more information or visit the Northwest Clinical Trials website directly.
You can call Douglas Family Medicine at 303-688-3434 or request an appointment through the patient portal. The practice uses athenahealth as its patient portal platform. m. m. m. to noon.
Practice last updated March 21, 2026



