Meet the GI Nutrition NW Team

Tina Patnode, RDN, LD, CD [Owner and Practice Manager]

Tina Patnode is a Registered Dietitian Nutritionist (RDN) with over 25 years of experience providing Medical Nutrition Therapy (MNT) for individuals with gastrointestinal conditions such as Irritable Bowel Syndrome (IBS), Inflammatory Bowel Disease (IBD), Small Intestinal Bacterial Overgrowth (SIBO), Intestinal Methanogen Overgrowth (IMO), Celiac disease, and Gastroparesis.

As a GI Dietitian, Tina works with those individuals who have not received a definitive diagnosis but suffer from nausea, vomiting, loss of appetite, acid reflux, abdominal bloating, abdominal pain, diarrhea, and constipation.

Tina has always had a dream to start her own private practice. So, that is exactly what she did! In 2018, Tina founded GI Nutrition NW, LLC and opened her office in Southwest Portland. In March of 2020, Tina began providing Telehealth to those who reside in Oregon, Washington, California, Arizona, and Colorado.

Outside of her thriving private practice, Tina is advancing her practice as an Integrative and Functional Nutrition Certified Practitioner applying a food as medicine approach to optimizing digestive health. She successfully completed the GI Dietitian’s Roadmap Course and is a Certified Gastroenterology Nutritionist through the SIBO Academy.

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Alyssa O'Brien, RDN, LD, CD [Registered & Licensed Dietitian]

Alyssa has over 15 years of experience as a registered and licensed dietitian using medical nutrition therapy to improve quality of life. She has a depth of knowledge to draw upon as a nutrition coach and counselor as she has worked in various healthcare settings. Alyssa has gained expertise in GI nutrition while working at wellness clinics in Minnesota and Gastroenterology clinics in Oregon. Alyssa works with, but not limited to, the following conditions:

Irritable Bowel Syndrome (IBS)
Inflammatory Bowel Disease (IBD), Crohn’s, Colitis
GERD, Acid Reflux
Celiac Disease
Gastroparesis
Small Intestinal Bacterial Overgrowth
Food Allergies and Intolerances
PCOS
Endometriosis
Perimenopause/Menopause/Post-Menopause
Blood sugar and weight challenges

Alyssa practices using a functional nutrition approach to get to the root of chronic conditions to sustain long-term wellness. She believes in a whole-body approach to nutrition interventions and values mind-body connection to healing. Alyssa has completed the GI Dietitian’s Roadmap Course and is a Certified Gastroenterology Nutritionist through the SIBO Academy.

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Leah Browning, RN, Patient Care Coordinator

Leah is the dedicated Patient Care Coordinator at GI Nutrition NW, LLC where she serves as a vital link between our patients and providers. With a background in Nursing and Administrative Assistance, Leah brings exceptional organizational skills, warmth, and compassion to her role. She is passionate about creating a welcoming and supportive environment, ensuring each patient feels valued and heard from the moment they contact the practice.

Leah manages scheduling, coordinates patient appointments, and assists with inquiries to help streamline each individual’s experience. Known for her attention to detail and approachable nature, Leah is committed to making the administrative process seamless so that patients can focus fully on their health and nutrition journey.

Outside of the office, Leah enjoys hiking, cooking new recipes and having fun with her 3 kids.

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Our Team

Hear from our Amazing Clients

Tina is a very caring professional with a strong handle on her area of expertise; I feel like I’m in very good hands when she is providing her medical suggestions and guidance. She offered to intercede on my behalf regarding a specialist referral which I greatly appreciated. Tina is a kind- hearted good person who I feel very fortunate to have found.

Tina is amazing!! Thank you Tina for caring, listening, problem solving and valuing my comments and concerns. You make me feel justified in my complaints and my attempts to heal. You are a gem! Thank you!

Tina is an excellent dietitian. She keeps up to date on new information for patients. She does her best to help the patients reach their goal. She helped me to reopen my life to living it again. Totally appreciate Tina.

Tina was professional, knowledgeable, and helpful in assisting me with a personal and individualized, optimal nutrition plan. I appreciated her information, input and willingness to help educate me regarding a healthier diet plan.

Tina has always answered my questions and sited the latest reliable information about my IBS and about FODMAPS research. I am very happy with my interactions with her and with the results I have had. My quality of life has improved and I feel as if I am making informed dietary choices instead of guessing and having no way to improve my symptoms. I am more confident and less apprehensive about food.

I was referred to GI Nutrition from my doctor. I had such a great experience. Not knowing what to expect Alyssa was amazing to work with. Extremely knowledgeable and helpful. My appointments were about ways to encompass realistic and helpful ways to improve my life. We did NOT focus on how many pounds I had or hadn't lost. Such a relief. Timely, professional, and kind! I'd send everyone I know there.

Alyssa O'Brien has been very knowledgeable and helpful, and very relatable also. She was encouraging and kind in her approach. I very much enjoyed working with her, and my understanding of my condition has improved greatly.

Alyssa O’Brien was so attentive to my unique issues and challenging diet constraints. Her creativity was top notch and helped put me back on a path to help even with long covid.

Our Team

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