Parsley Health | Functional Medicine

Parsley Health operates a functional medicine practice in New York, NY, founded and led by Dr. Robin Berzin, MD, who developed a clinical model centered on identifying root causes rather than symptom management. The practice employs board-certified physicians alongside health coaches and phlebotomy-certified technicians to deliver comprehensive care plans that integrate advanced diagnostic testing with nutrition, lifestyle modification, and targeted supplementation. Patients access care through a hybrid model combining in-person visits at the New York location with telehealth consultations available to residents of New York and California.

The clinic's diagnostic approach includes expanded laboratory panels beyond standard primary care testing, with particular emphasis on hormonal markers, metabolic function indicators, micronutrient levels, and gut microbiome analysis. Dr. Berzin and the medical team use these detailed biomarker assessments to construct individualized protocols addressing conditions such as autoimmune disorders, thyroid dysfunction, insulin resistance, chronic fatigue, digestive disorders including SIBO and inflammatory bowel conditions, and mood disorders with metabolic components. Each treatment plan typically combines pharmaceutical interventions when indicated with evidence-based supplementation protocols, dietary modifications tailored to individual food sensitivities and metabolic needs, and stress management techniques.

The care model pairs each patient with both a physician and a dedicated health coach who provides ongoing support between medical appointments. Health coaches hold regular sessions to implement dietary changes, review supplement regimens, track symptom patterns, and adjust lifestyle factors including sleep hygiene, movement practices, and stress reduction techniques. This coaching component distinguishes the practice from conventional primary care by providing accountability and education throughout the treatment process rather than limiting patient contact to quarterly medical visits.

New patients undergo an initial consultation lasting 60-90 minutes during which the physician conducts a comprehensive health history review and orders baseline laboratory work. Follow-up appointments occur at intervals determined by condition complexity, typically every 4-8 weeks initially, then extending to quarterly visits as patients stabilize. The practice operates on a membership model rather than fee-for-service billing, with members receiving unlimited messaging access to their care team, extended appointment times, and coordination of outside specialist referrals when needed. Laboratory testing is billed separately through insurance or available at negotiated self-pay rates.

Parsley Health maintains its New York office for patients preferring in-person phlebotomy, physical examinations, and face-to-face consultations, while offering full telehealth services for established patients and those in California. The practice does not accept insurance for membership fees but provides superbills for potential reimbursement and works with HSA/FSA accounts. Dr. Berzin has trained the physician team in her functional medicine protocols, ensuring consistency in the diagnostic and treatment approach across providers. The practice focuses on patients with complex chronic conditions who have not achieved resolution through conventional care, particularly those with multiple overlapping symptoms affecting energy, digestion, hormonal balance, and mental clarity.