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Meet the Team


Our office TEAM truly makes the visits to our office FUN! With over 100 years of combined experience in the dental field our TEAM truly loves what they do. We have the following TEAM members to help with all your needs!


Tiana at Joseph R. Gregg Orthodontics Scheduling Coordinator: My name is Tiana and I joined Dr. Gregg's staff in February of 2018. As a scheduling coordinator one of the most important aspects of my job is to make sure our patients and their family members feel welcomed and at home when they visit our office. I enjoy getting to know our patients and watching their new smiles emerge as they come in for treatment.

As for my personal life, I have lived in the Gresham area since my early teens. I've been married to my wonderful firefighter husband Alan for 29 years. Together we share two terrific adult children, Cameron and Madison, and two fur babies, Marlee (a Puggle) and Abbie (a Boston). We enjoy doing CrossFit, spending time with friends and family, and have recently taken up hiking.


Mary at Joseph R. Gregg Orthodontics New Patient Coordinator: "Having years of experience in various positions of the orthodontic office, I have truly found my passion as New Patient Coordinator. I believe the difference we make creating beautiful smiles is life changing.

When I am not working, I love spending time with family, being creative in the kitchen, gardening or anything outdoors." - Mary


Tracy at Joseph R. Gregg Orthodontics Financial Coordinator: Tracey joined the staff in 2011. She is a graduate of Brigham Young University with degrees in Organizational Psychology and Sociology. She has been a business owner and grant writer. She grew up in Arizona and California. She now makes her home in Gresham. She is married and has two adult sons and two German Shepherds. When she is not at work, she spends time volunteering with her church, reading, and spending as much time as possible in her pajamas.

Stacy at Joseph R. Gregg Orthodontics Office Manager: My name is Stacy and I have worked in the Orthodontic field for over 30 years. I started working as a Patient Manager and have recently taken on a new role as Office Manager. I really enjoy managing Dr. Gregg's office because it allows me to be a part of helping the whole team and working with all patients and families.

When I'm not at work, I'm enjoying time with my husband, our two adult daughters and son-in-law. Now that we aren't watching our daughter's competing in sports, we enjoy traveling and exploring new places.


Patient Managers: Mandi, Nicole and Genelle are the Patient Managers that work with patient care directly and aid Dr. Gregg with all chairside assisting. They are also trained and certified in expanded functions in orthodontics.

Nicole at Joseph R. Gregg Orthodontics "My name is Nicole and I have worked in the dental industry for over 20 years in both orthodontics and general dentistry and am so pleased to be a part of the Gregg Ortho team. We have a great group that provides exceptional service. My training includes certification in CDA, EFDA, EFODA, amongst others. My husband and I live in Gresham and we have two children. In my free time I enjoy running, boating, and paddle boarding. I am an avid runner and participate in the annual Hood to Coast Relay and have also run in the Pac Crest Marathon. You might catch my co-worker Mandi Sievertsen and I spending our lunch break out on a "runch."


Mandi at Joseph R. Gregg Orthodontics "My name is Mandi, I graduated from the Portland Community College Dental Assisting Program in 2005. I worked as a general dental assistant for almost 13 years before switching over to Orthodontics in 2017, and finding my new "work home" with Dr Gregg. I'm so blessed to be a part of the GreggOrtho team where we all strive for exceptional service, and creating beautiful smiles.

I'm an avid runner, I will run anytime, anywhere, including during lunch, I "runch", with my co-workers Nicole and Genelle. Hood to Coast relay has become an annual tradition. I have completed 3 half marathons and always have a race on the calendar to keep me running.

My husband, Jesse, and I got married in 2004. We have 4 children who are very involved in sports. When we're not working, we are transporting kids to various sporting events. We have strong family values and enjoy vacationing together, Lincoln's City and Black Butte are two of our favorite places."


Genelle at Joseph R. Gregg Orthodontics "Hi, I'm Genelle and I'm so excited to be a part of Dr. Gregg's team! Orthodontics has always been my passion. I love the fast pace, fun environment, and watching patients' confidence grow as their healthy smiles emerge. I have over 20 years experience as an Orthodontic Assistant, and am recently re-entering the workforce after staying home to raise my two boys.

I've enjoyed being heavily involved over the years at my sons' school in the Parent Club, planning fundraisers and volunteering in the classrooms as much as I can. I also am a volunteer coach for Girls on the Run, a national program that I'm passionate about which helps empower young women. In my spare time, I love running and fitness, reading, cooking (and eating!), and spending as much time as possible with my husband and sons! Fun fact: I am obsessed with llamas!"


Ally at Joseph R. Gregg Orthodontics Marketing Manager: Hi my name is Ally and I am the Marketing Coordinator here at Gregg Ortho. I recently received my Business Administration Degree in Marketing at Portland State University and I am very excited to be a part of this team. In my free time, I love to try new restaurants, travel and spend time with my husband, Cody.


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Gresham (503) 489-4546 1201 S.E. 223rd Ave., Suite 220

Hood River (541) 490-9990 1625 Woods Ct

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