--- title: "Practitioners | Board-Certified Psychiatrists | CARMAhealth" description: "Meet our board-certified psychiatrists and psychiatric nurse practitioners across Texas and Florida. Accepting new patients with 15+ insurance plans." canonical: https://carmahealth.com/providers source: https://carmahealth.com/providers mirror_of: carmahealth.com content_hash: sha256:b2d5c65d878070209b17fa08158b9e1720178599a61481672d004ccfb6e7a77d generated_at: 2026-07-08T23:20:17.555Z robots: noindex, follow --- Our Practitioners # Meet Your CARMAhealth Team Board-certified psychiatrists, psychiatric nurse practitioners, and specialists working together to deliver collaborative, whole-person care across Texas and Florida. [Schedule an Appointment](/new-patients) Physician-Led Care ## Collaborative Expertise Across Specialties CARMAhealth brings together a team of more than two dozen practitioners spanning general psychiatry, child and adolescent psychiatry, addiction medicine, neurology, and family medicine. Our physician-led model means your care is guided by board-certified psychiatrists and supported by experienced psychiatric nurse practitioners. Whether you need a [psychiatric evaluation](/services/psychiatric-evaluation), ongoing [medication management](/services/medication-management), or advanced treatments like [TMS](/services/tms-therapy) or [ketamine therapy](/services/ketamine-therapy), our practitioners work as a team to find the right path for you. With offices in Austin, Dripping Springs, and Coral Springs, plus [telehealth](/services/telehealth) across three states, quality psychiatric care is always within reach. Texas ## Texas Practitioners [ (image: Carlos Tirado, MD, MPH headshot) Austin, TX ### Carlos Tirado, MD, MPH Founder and CEO, General and Addiction Psychiatry Learn more ](/providers/carlos-tirado)[ (image: Isela Werchan, MD headshot) Austin, TX ### Isela Werchan, MD General Psychiatry and Addiction Medicine Learn more ](/providers/isela-werchan)[ (image: Jennifer Schaefer, MD headshot) Austin, TX ### Jennifer Schaefer, MD Child and Adolescent Psychiatry, Addiction Medicine Learn more ](/providers/jennifer-schaefer)[ (image: Casey Coton, DO headshot) Austin, TX ### Casey Coton, DO General Psychiatry Learn more ](/providers/casey-coton)[ (image: Steven Powell, MD headshot) Austin, TX ### Steven Powell, MD Family Medicine and Addiction Medicine Learn more ](/providers/steven-powell)[ (image: Robert Ulrich, MD headshot) Dallas-Fort Worth, TX ### Robert Ulrich, MD Neurology and Addiction Medicine Learn more ](/providers/robert-ulrich)[ (image: Jeff McCreight, MD headshot) Austin, TX ### Jeff McCreight, MD Emergency and Addiction Medicine Learn more ](/providers/jeff-mccreight)[ (image: David Walsh, PMHNP-BC headshot) Austin, TX ### David Walsh, PMHNP-BC COO, Psychiatric Nurse Practitioner Learn more ](/providers/david-walsh)[ (image: Lorie Kmetz, FNP headshot) Austin, TX ### Lorie Kmetz, FNP Family Nurse Practitioner Learn more ](/providers/lorie-kmetz)[ (image: Sally Reese, FNP/PMHNP headshot) Austin, TX ### Sally Reese, FNP/PMHNP Family and Psychiatric Nurse Practitioner Learn more ](/providers/sally-reese)[ (image: Alex Dodson, PMHNP headshot) Austin, TX ### Alex Dodson, PMHNP Psychiatric Nurse Practitioner Learn more ](/providers/alex-dodson)[ (image: Audrey Amburgey, DNP, PMHNP-BC headshot) Austin, TX ### Audrey Amburgey, DNP, PMHNP-BC Psychiatric Nurse Practitioner Learn more ](/providers/audrey-amburgey)[ (image: Samantha Hurlbut, PMHNP headshot) Austin, TX ### Samantha Hurlbut, PMHNP Psychiatric Nurse Practitioner Learn more ](/providers/samantha-hurlbut)[ (image: Kim Sterling, PMHNP headshot) Austin, TX ### Kim Sterling, PMHNP Family and Psychiatric Nurse Practitioner Learn more ](/providers/kim-sterling)[ (image: Heather Tvinnereim, FNP headshot) Dripping Springs, TX ### Heather Tvinnereim, FNP Family Nurse Practitioner Learn more ](/providers/heather-tvinnereim)[ (image: Katie Farsy, PMHNP-BC headshot) Austin, TX ### Katie Farsy, PMHNP-BC Psychiatric-Mental Health Nurse Practitioner Learn more ](/providers/katie-farsy)[ (image: Nirali Amin, FNP-C headshot) Austin, TX ### Nirali Amin, FNP-C Family Nurse Practitioner Learn more ](/providers/nirali-amin)[ (image: Karyn French, PMHNP-BC headshot) Texas ### Karyn French, PMHNP-BC Psychiatric Nurse Practitioner Learn more ](/providers/karyn-french)[ (image: Susan Gonzales, FNP-C headshot) Austin, TX ### Susan Gonzales, FNP-C Family Nurse Practitioner Learn more ](/providers/susan-gonzales)[ (image: Jasmine Ghee, FNP-C headshot) Telehealth, TX ### Jasmine Ghee, FNP-C Family Nurse Practitioner Learn more ](/providers/jasmine-ghee)[ (image: Allison Slack, PMHNP-BC headshot) Telehealth, TX ### Allison Slack, PMHNP-BC Psychiatric Nurse Practitioner Learn more ](/providers/allison-slack) Florida ## Florida Practitioners [ (image: David Kramer, MD headshot) Coral Springs, FL ### David Kramer, MD Psychiatry Learn more ](/providers/david-kramer)[ (image: Braulio Mariano-Mejia, MD headshot) Coral Springs, FL ### Braulio Mariano-Mejia, MD Medical Director, Florida Learn more ](/providers/braulio-mariano-mejia)[ (image: Henna Jafri, DNP, PMHNP-BC headshot) Coral Springs, FL ### Henna Jafri, DNP, PMHNP-BC Psychiatric Nurse Practitioner Learn more ](/providers/henna-jafri)[ (image: Joey-Ann Alexander, PMHNP headshot) Coral Springs, FL ### Joey-Ann Alexander, PMHNP Psychiatric Nurse Practitioner Learn more ](/providers/joey-ann-alexander)[ (image: Ruth Kreis-Orkoulas, NP headshot) Coral Springs, FL ### Ruth Kreis-Orkoulas, NP Nurse Practitioner Learn more ](/providers/ruth-kreis-orkoulas)[ (image: Sarah Fultz, FNP-C headshot) Coral Springs, FL ### Sarah Fultz, FNP-C Family Nurse Practitioner Learn more ](/providers/sarah-fultz)[ (image: Giselle Valladares, NP headshot) Coral Springs, FL ### Giselle Valladares, NP Nurse Practitioner Learn more ](/providers/giselle-valladares)[ (image: Allison Slack, PMHNP-BC headshot) Coral Springs, FL ### Allison Slack, PMHNP-BC Psychiatric Nurse Practitioner Learn more ](/providers/allison-slack) Insurance & Coverage ## Most Major Plans Accepted We accept 15+ insurance plans and offer self-pay options for services not covered by insurance. +6 more [Verify Your Coverage](/insurance) [Call (512) 212-4670](tel:5122124670) Aetna · BCBS · Cigna · United Healthcare · Humana · and 6 more Take the First Step ## Start Feeling Like Yourself Again Whether you're exploring treatment for the first time or looking for a new practitioner, our psychiatrists are here to listen. [Book an Appointment](/new-patients) [Call (512) 212-4670](tel:5122124670) Accepting new patients · 15+ insurance plans accepted · Telehealth available