Psychiatric nurse practitioner at 8950 Villa La Jolla Dr, Suite C230, La Jolla, CA 92037, practicing through LifeStance Health's multidisciplinary team alongside psychiatrists, psychologists, and fellow PMHNPs like Megan Gotiangco. Karissa Chisum has no Google reviews under her individual listing. The PMHNP role within LifeStance's model handles psychiatric evaluations and medication management with the same prescriptive authority as the suite's psychiatrists — a staffing structure that expands scheduling availability for patients who need medication-related appointments sooner than a psychiatrist's calendar allows. Ana Lopez Hopkins, PMHNP-BC at Mind Bloom La Jolla on Silverado St provides a comparable scope of prescriptive services in a smaller, independently branded practice that also offers TMS — a treatment modality not available through LifeStance's Suite C230 office.