Physician Assistants

What is a Physician Assistant?

Physician Assistants (PAs) are health professionals licensed to practice medicine with physician supervision. PAs perform a comprehensive range of medical duties, from basic primary care to high-technology specialty procedures. PAs often act as first or second assistants in major surgery and provide pre and postoperative care.

While our PAs may assist in the delivery of your healthcare, they will never be substituted for a physician without your knowledge and consent. If at any time you have questions regarding the services you receive at Heart and Vascular Institute of Wisconsin, please do not hesitate to ask. All of the above teams work together to provide HVI patients with high-quality cardiac care.


Erin Diedrick, PA

Maria Stumo, PA

Maria Stumo, PA

Josh White, PA

Josh White, PA

Nurse Practitioners

What is a Nurse Practitioner?

Nurse practitioners (NPs) are registered nurses who are prepared, through advanced education and clinical training, to provide a wide range of preventive and acute health care services to individuals of all ages. NPs complete graduate-level education preparation that leads to a master’s degree. NPs take health histories and provide complete physical examinations; diagnose and treat many common acute and chronic problems; interpret laboratory results and X-rays; prescribe and manage medications and other therapies; provide health teaching and supportive counseling with an emphasis on prevention of illness and health maintenance; and refer patients to other health professionals as needed.


Julie Berger, APNP

Hillary Breidel, APNP

Hillary Keeler, APNP

Laura Butch, APNP

Laura Butch, APNP


Peggy Flease, APNP

Ann Mayer, Nurse Practitioner

Ann Mayer, APNP


Lisa Wilson, APNP