Joann has been a registered nurse for over 40 years. After graduating from nursing she spent 4 ½ years in the US Navy Nurse Corps. Her clinical experience includes work in Intensive Care, Medical and Surgical floors, Dialysis Unit, Emergency Room and private practice.

She has spent the past 5 years working with patients with venous problems. She was instrumental in helping establish Five Star Vein Institute, serving patients in Las Vegas, Mesquite, and the surrounding areas.

She is outgoing and friendly and enjoys working with patients and takes the time necessary to understand their problems. She particularly enjoys doing free vein screening for new patients. This gives her an opportunity to listen to their concerns and to educate them on venous disease and the modern treatments that are provided at the Five Star Vein Institute. She is a member of the American College of Phlebology [Vein Care] and regularly attends continuing medical education meetings to keep abreast of the latest advances in this field.

ColleenColleen was born and raised in Washington and is married, and has one child. She graduated with a BA in “Recreation-Youth Serving Agencies” from Eastern Washington University. Since that time she has worked in a variety of jobs including 15 years with the Spokane City Prosecutors Office. After moving to this area she worked as a legal assistant for a private law firm for 9 months.

Colleen is the first person that patients encounter when they come into the office. She is friendly, yet professional. She has become an expert in comprehending the complexities of medical insurance. She provides invaluable help to patients, helping them understand exactly what type of policy they have. She can tell them what they can expect in the way of fees from FIVE STAR VEIN, as well as what they can expect their insurance to cover. In this way she plays an essential role in this office.

At FIVE STAR VEIN we want the patient to fully understand their insurance coverage and their potential bills, so there will be no surprises. Colleen relates well to people and can answer the often confusing questions that come up in a friendly, clear manner.

Colleen states that she is “happy” now that she is working at FIVE STAR VEIN INSTITUTE and is currently living her dream of golfing, exploring Southern Nevada and Utah, enjoying opportunities in Las Vegas, and making new friends.


MargaretMargaret A. Czerwinski [Mizerska] is a Registered Vascular Sonographer [RVS]. She also holds a Masters degree in Medical Physics and Dosimetry from the University of Science and Technology in Krakow, Poland. She is a graduate of the American Institute of Medical Sonography in Las Vegas, Nevada.

Margaret is married and has 2 young girls and has settled in Las Vegas. She is very friendly and interacts well with patients. She is an excellent vein ultrasonographer. At Five Star Vein Institute, we feel that she is the best in Las Vegas.

Margaret likes computers and is interested in new medical technology and computer programs. She has been able to adapt quite quickly to the electronic medical records that are used at Five Star Vein Institute.

She enjoys hiking, swimming, skiing, and traveling.

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