David Wiss
Addiction Recovery · Cognitive Health
About
David Wiss is a nutrition and mental-health professional whose work focuses on the relationship between nutrition, physical health, and psychological well-being. He holds a PhD in Community Health Sciences from UCLA and is a Registered Dietitian Nutritionist (RDN). His approach combines functional medicine assessment, nutrition, and mental-health research to explore factors that may contribute to persistent mental-health symptoms.
Highlights
• Focus on complex and treatment-resistant mental-health presentations
• Functional medicine testing and personalized care plans
• Nutrition and health psychology included in the collaborative approach
• Free 15-minute discovery call
• Remote consultations and at-home testing options
• Optional ongoing membership after the initial assessment
Services & Expertise
Common concerns treated
Primary specialties
Practice
FxMed Mental Health
FxMed Mental Health is a collaborative functional medicine group practice in Los Angeles. Its approach combines functional medicine testing, nutrition, and health psychology to assess complex or treatment-resistant mental-health concerns. The team includes David Wiss and health psychologist Gretchen Kubacky, PsyD. The practice describes its process as a comprehensive assessment followed by a personalized nutrition, supplement, and lifestyle roadmap.
Licensed States & Languages
Licensed States
Languages spoken
Frequently asked by patients
Does the practice accept insurance?
The practice says it operates outside insurance. It can provide superbills for possible out-of-network reimbursement, and some services may qualify for HSA/FSA payment. Check with your insurer and the practice before enrolling.
Can appointments be done remotely?
Yes. The practice says consultations are conducted by secure video and that testing can be completed using at-home kits and local blood-draw services.
Is ongoing support included?
The practice describes ongoing membership as optional, with monthly sessions and continued nutrition and protocol support. Its current membership price was not confirmed.