Meet our Managers!

Rick Adamich, President, with Oxygen One since 2008 

I love working at Oxygen One because our unique family-like culture keeps us focused on our mission to serve our patients, referral sources, and each other. I am responsible for the overall leadership and strategic direction of the company. I ensure we are operating in a manner consistent with our company playbook. I currently serve as Vice President of the Midwest Association of Medical Equipment Services (MAMES) and also on the State Leaders Council for the American Association for Homecare. I am a proud single father of 3 amazing girls and we love to travel as much as possible, primarily to visit family. 

Oxygen one is not my job - it is my family. As someone once said, "If you do what you love, you'll never work a day in your life." Oxygen One has made this my reality. The people I work with and the customers I serve make each day worthwhile. My primary focus is business management and billing. I work to ensure that we are able to maximize each person's benefits, so he/she may get the care and equipment needed. I have a daughter who is a teacher in the Waukesha School District. I love to read and spend time outdoors, whenever the sun is shining. I also love to spoil my doggies with their favorite toys and treats.

Lori Corey, Vice President, with Oxygen One since 2000 

Ashley Bergner, Director of Patient Care and Field Ops, with Oxygen One since 2005 

For me, Oxygen One has been a place where not only have I been able to grow, but a place that I can foster growth in others. I oversee several different areas of the company's operations that are directly related to the care of our patients, equipment they receive and our delivery services. In my time here, I have also had the privilege to lead our Planning Committee. This team in large part, has helped to foster the company culture that we have today. We take a lot of pride in making work more enjoyable and ensuring that people on our team feel like we are a family. I love taking vacations as often as I can and spending time with friends and family.
I enjoy working with people and being able to help others. Working in a small company like Oxygen One, you get the sense of a family atmosphere from your co-workers and patients. To be able to help others and get to know them on a more personal level, is a rewarding aspect of this job. My job is to ensure that the patients are being taken care of. I like all sports, especially baseball and the Milwaukee Brewers. I look forward to my coffee each morning. When not at work, I enjoy spending time with family and friends. Whether it's going to the park, playing golf, softball or any other activity.

Dan Corrie, Patient Care Manager, with Oxygen One since 2011 

Tina Stache, Patient Intake Manager, with Oxygen One since 2008 

I enjoy being able to help people. I am here to serve and with the diversity of our patient population I am able to help every age group from infants to older adults. I also enjoy working for a small business, like Oxygen One. I oversee the operations of our Intake department where we process all new referrals/patients. I am married and have 1 son. We enjoy traveling to the family cabin in Northern Wisconsin during the summer, camping, watching movies, and exploring new places and activities in our area. 
I like the opportunity to be a steward in serving our patients and referral sources. I also like knowing that I work for a company and with a group of people that are hard-working and wholesome. I am the Business Development Manager/Outside Sales Rep at Oxygen One. My responsibilities include maintaining relationships with current and potential referral sources. I have 2 amazing daughters who keep me very busy! I enjoy snowmobiling, playing volleyball, water skiing, spending time with my family and friends, and going up north! 

Macy Anderson, Business Development Manager, with Oxygen One since 2015 


 Petra Vollendorf, Racine Branch Manager, with Oxygen One since 2018 

I love working for Oxygen One because everyone here cares about me and my professional growth. This truly creates a family environment where everybody is there for each other. I manage our Racine Office and help ensure the day to day operations in order to offer the best customer service possible. I am married and have a blended family of 7. We love to go camping every summer where we spend the majority of our time in the pool. I love singing, baking, and making thoughtful gifts for others.