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Marissa is a board-certified Family Nurse Practitioner with over 14 years of nursing experience. She is passionate about empowering patients through education, preventative care, and a holistic approach to health. Marissa earned her Bachelor of Science in Nursing from the University of Rhode Island and went on to complete her Master of Science in Nursing at Chamberlain University, specializing as a Family Nurse Practitioner. Before becoming an NP, she spent over a decade as a critical care nurse, gaining extensive experience in bedside nursing.
She values building strong patient relationships and works collaboratively to create personalized treatment plans centered around each patient’s goals. Marissa lives in North Kingstown with her husband, two daughters, and their two dogs. Outside of work, she enjoys beach days and spending quality time with her family.
Jason Xynellis is a board-certified Physician Assistant with 18 years of diverse clinical experience. He holds a Bachelor of Science in Biological Sciences from the University of Rhode Island and a Master’s degree in Physician Assistant Studies from Albany Medical College. Jason’s areas of clinical interest include diabetes management, medical weight loss, migraine treatment, and general neurology. Known for his thoughtful and evidence-based approach to care, he is committed to helping patients understand their health and feel empowered in their treatment plans.
In addition to his clinical work, Jason is passionate about educating the next generation of healthcare providers. He serves as a lecturer and clinical preceptor for three Physician Assistant programs across Rhode Island and Massachusetts, where he shares his knowledge, clinical insight, and real-world experience with students.
Carly is a Certified Medical Assistant, Licensed Medical Aesthetician, and Certified Medical Weight Loss Coach with a strong passion for patient care and wellness. With over nine years of experience as a CMA, she has worked in various clinical settings, including urgent care, gastroenterology, and primary care, where she gained extensive hands-on experience in triage, suture and staple removal, referrals, prior authorizations, and overall patient care.
Carly earned her Medical Assistant certification from Ridley and Lowell in 2016, and later pursued her passion for skincare, graduating from Cortiva Institute in 2020 with her Aesthetics License. She also holds certifications in ZO Skin Health, Dermalogica, and advanced aesthetic treatments, including Aquafirme, Jet Peel, Basic and Anti-Aging Facial, ZO peels, and dermaplaning.
Most recently, she became certified as a Medical Weight Loss Coach through the AFPA in 2025. Carly’s ability to seamlessly transition between medical and cosmetic care, combined with her compassionate approach and clear communication of treatment plans, makes her a valuable asset in both healthcare and aesthetics. She previously worked at a busy primary and urgent care practice and later gained spa experience at The Norwich Inn and Spa, as well as expertise in medical aesthetics.
Carly currently resides in Warwick, RI, with her boyfriend and their cat. In her free time, she enjoys working out and spending time with family and friends. Her long-term goal is to grow in the field of aesthetics while continuing to deliver high-quality results, care, and education to her patients.
Alyssa Giusti is the practice manager for the primary care office and brings 14 years of experience in healthcare, including 10 years in healthcare management within a large surgical practice. She previously held a leadership role at Brown Surgical Associates, where she played an integral part in overseeing day-to-day operations, improving workflows, and supporting clinical teams to deliver high-quality patient care.
Alyssa began her healthcare career at Skin Pros in Providence, Rhode Island, where she worked as a medical assistant in general dermatology as well as a Mohs surgical assistant. She has worked directly with patients across multiple specialties, including general dermatology, aesthetics, and colorectal surgery. Her clinical experience laid the foundation for her transition into leadership as a colorectal surgery practice supervisor and later as part of the management team overseeing surgical operations within Brown Surgical Associates across multiple multispecialty divisions.
With a strong background in both clinical care and healthcare management, Alyssa is known for her hands-on leadership style, commitment to operational efficiency, and focus on creating a positive experience for both patients and staff.
Alyssa is looking forward to bringing those talents and values to Oceanside Medical, Primary Care.
Outside of work, Alyssa resides in Cranston with her husband, two children, and French bulldog. In her downtime, she enjoys spending time with family and friends, shopping, and, of course, her daily Starbucks.
Nicole was born and raised in West Warwick and is a proud graduate of Saint Xavier’s Academy. A devoted mother of four, she brings warmth, empathy, and dedication to everything she does—especially her work in the medical field. With over 20 years of experience in healthcare, Nicole finds deep fulfillment in caring for others and helping patients feel better.
Her passion for medicine grew even stronger following the loss of her father, inspiring her to push forward, grow professionally, and continue making a meaningful impact in the lives of others.
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