Clinical Office Staff

With a diverse set of skills and specialties, our dedicated staff is here to make your experience comfortable and successful.


Vascular Lab Technicians:

Kathryn J. Pazienza
Kathryn J. Pazienza, LPN, RVT, joined the Vascular Center of Northern Michigan in 2008, bringing with her eighteen years of experience and professionalism in the vascular field. Kathy graduated from Mott Community College and pursued a career at McLaren Regional Medical Center as an LPN. She moved on to Michigan Vascular Center, Flint, Michigan as a registered vascular technologist. Kathy developed a deep vein thrombosis and pulmonary embolism case study used in physician presentations at McLaren Regional Medical Center. She then moved on to St. Joseph Mercy Hospital in Ypsilanti as an RVT.

She developed the expertise in vascular studies which included renal, abdominal, carotid, arterial, AVF and venous duplex. She also performed peripheral arterial testing, venous reflux and graft surveillance studies. Kathy has also been an active lab instructor at Baker College in Auburn Hills, Michigan. Kathy with her excellent technical skills, balanced with genuine compassion is an excellent asset to the team at the Vascular Center of Northern Michigan.


Annette Casciano
Annette Casciano, RVT, joined the Vascular Center of Northern Michigan in 2009. She brings with her 7 years of experience as a professional in the vascular technology field. Annette previously worked as a certified medical assistant and a medical billing specialist. After additional training she received her certificate of Vascular Technology in 2005. She spent the next 4 years at the Michigan Vascular Center before joining the practice at the Vascular Center of Northern Michigan.

Her professional experience includes all areas of vascular testing: carotid, renal, abdominal, venous, arterial, AVF and bypass duplex. She is also very experienced in peripheral arterial testing and has done vascular studies in the operative setting.

Annette is a well-rounded and experienced vascular technologist and we are thrilled that she has chosen to move her family north and join our team.


Jamie S. Arnold

Jamie Arnold, BSRS, RDMS, RVT, joined the Vascular Center of Northern Michigan in 2016. Jamie graduated from Armstrong State University in Savannah, GA with a Bachelor of Science in Radiologic Science degree, specializing in Diagnostic Medical Sonography. While working on his degree, he gained experience at several renowned institutions such as Emory University in Atlanta, GA and the Medical University of South Carolina in Charleston, SC, providing him with a diverse educational and clinical background. Jamie is registered in three different sonography specialties including Vascular Technology, Abdomen, and OB/GYN. Out of all the subsets of ultrasound, vascular imaging is his passion.

Jamie has a wide arrange of experience which includes working in general ultrasound, assisting in the operating room with hospital procedures, and performing vascular studies. A non-exhaustive list of proficient exams consist of renal, abdominal, urological, carotid, bypass, AVF and peripheral venous and arterial tests.


Jessica Knapp

Jessica Knapp, RVT, brought her vascular knowledge in ultrasound to the Vascular Center of Northern Michigan in November 2016. Jessica graduated with her ultrasound degree from Baker College and became a registered vascular technologist in June 2016. She decided to begin her career in Northern Michigan where she can sharpen and strengthen her skills. She worked diligently in her clinical rotations at Detroit Medical Center – Harper Hospital and applied a vast majority of her educational knowledge there.

Jessica is a determined and hard-working individual which compliments the vascular team at Northern Michigan Vascular Center very well. Her plethora of knowledge in vascular anatomy and pathology makes her a valuable asset to the team.


Office RNs:


Charlotte Rykse

Charlotte Rykse, RN, joined the team at the Vascular Center in 2014.  She graduated as a Registered Nurse in 2007 and began her career at Munson Medical Center.  Charlotte honed her skills as a critical care nurse in the CCU for two years and then moved to the Post-Anesthesia Care Unit.  While in PACU, Charlotte cared for a multitude of surgical patients including orthopedic, pediatric, vascular, OB/GYN, reconstructive, and general surgery.  After a year, Charlotte took on the role of charge nurse, overseeing the flow of patient care in the PACU, and directing placement of patients within the hospital.

Upon moving to the Vascular Center, Charlotte became an important member of the surgical suite team acting as the pre-operative and post-operative nurse in the outpatient endovascular surgical suite.  She maintains her certifications in Basic Life Support and Advanced Cardiac Life Support and has helped developed many procedures and protocols to ensure the highest level of quality care in the endovascular suite.

Additionally, under the mentorship of Dr. Colburn and Dr. Boros, Charlotte has developed her skills as a talented Sclerotherapist.  She received her certificate from Empire Medical Training in Advanced Sclerotherapy and Laser Techniques and currently provides assessment and treatment of spider veins in the office. The addition of this service to our patients completes the full spectrum of vascular care offered at the Vascular Center of Northern Michigan.



Sarah Winter

Sarah Winter, R.N., brought her extensive nursing experience to the Vascular Center of Northern Michigan in April 2016. Sarah graduated with her nursing degree and became a registered nurse in 1999. She began her career in southeastern Michigan at Herrick Hospital in Tecumseh. She worked diligently in Obstetrics/Labor and Delivery for three years before moving to the Emergency Department, where she spent the next eleven years. While at Herrick. Sarah developed an immense understanding of wound and critical care, as well as peripheral vascular disease and its treatment.

Sarah has traveled extensively with her husband, and her skills were polished at Holland Hospital Urgent Care in Holland, MI and at a rheumatology clinic in North Carolina. Her work as an infusion nurse is especially helpful when she works in the VCNM Surgical Suite, preparing patients for procedures and caring for them while in recovery. Her knowledge in a vast assortment of chronic conditions makes her a valuable asset to the Vascular Center team. Her husband’s career brought Sarah and the family pets to Traverse City this year, where all are enjoying the healthy outdoor lifestyle Up North.


Laura Golembiewski

Laura Golembiewski, BSN, RN, joined the Vascular Center clinical staff in 2016. Laura graduated with her Associates Degree in Nursing in 1996 from Owens State College in Ohio. She then advanced her education and earned her Bachelor of Science in Nursing Degree from Bowling Green State University in 2009.

Laura brings to Northern Michigan her wide array of experiences, specializing in wound care, bleeding disorders, and vascular nursing, as well as surgical nursing and emergency care. She has expanded and honed her expertise working for ProMedica Wound Care and Emergency Department in Toledo at St. Luke’s Hospital, the Hemophilia Center at Toledo Children’s Hospital, Northwest Ohio Cardiology Consultants, and at the St. Vincent Mercy Health Vascular Unit.

Laura’s knowledge and skills are important assets to all Vascular Center patients. Patients treating wounds, or undergoing vascular procedures in the VCNM Surgical Suite will find her calm demeanor and highly capable care essential to their recovery.

Laura and her husband relocated to the Traverse City area in the spring of 2016. Their new home is a great place to explore their hobbies and interests such as beekeeping, camping, and gardening.