Dr. Robin Berzin runs a boutique medical practice out of a WeWork coworking space in New York City. Every day, she runs into 20- and 30-somethings who are eager to share their concerns with her — like weight gain, sleep loss, and mood swings — in the communal kitchen.

At Parsley Health, Berzin and her colleagues want to help those people get off prescription drugs and avoid the eye-popping fees that specialists charge. The startup takes a holistic approach to care, with physicians taking in information about a person's history, lifestyle, and genetics, and offering treatment that puts alternative therapies ahead of traditional medicine.

Founded in 2014, the startup is part of the direct primary care trend, which has been called the future of medicine. These offices don't accept insurance, and instead, charge a monthly fee that covers visits and other services. Direct primary care has the potential to give patients better access to their doctors, since they can come into the office more often without shelling out.

Business Insider recently toured the startup's San Francisco location to see if this 21st-century primary care model is worth the price.