Nurse Practitioners

The Nurse Practitioners of South Denver Cardiology Associates are highly skilled professionals with impressive credentials. They function in our practice as physician extenders and collaborate with physicians in an ongoing manner to enhance and improve the quality of care provided to our patients. They attend treadmills and tilt tables and are part of our team approach to consultations, hospital follow-ups, and discharge teaching.




Amber Abrams, MSN, FNP-BC, I am originally from Dickson, TN, and completed my BSN degree at the University of Iowa with honors. My career as an RN began in Iowa, Florida, and Colorado caring for cardiac, pulmonary, neuro and multi-trauma patients. I then obtained my MSN- FNP at Kaplan University. My focus on education and practice began in family medicine and primary care. I quickly realized my joy in my career lies in cardiology, and I began to specialize in structural heart disease in the hospital setting. I now have joined SDCA to further pursue the care of cardiology patients in both the hospital and outpatient clinic settings. I am a member of the American Academy of Nurse Practitioners.

I love spending time with my husband and two dogs, trail running, traveling, hiking, fishing, and enjoying many outdoor activities.


Elizabeth Carter, MSN, APRN, AGACNP-BC, FNP-BC: I am from Mahnomen, Minnesota.  I earned a Bachelor of Science in Speech-Language and Hearing from Moorhead State University.  I later attained a Bachelor of Science in Nursing from Metropolitan State College of Denver’s Accelerated Nursing Program.  My nursing experience included hospital work on the telemetry floor, progressive care unit, and 6.5 years in the intensive care unit.  I accomplished a Master of Science in Nursing with Sigma Theta Tau Honors from Colorado State University.  I joined South Denver Cardiology in April of 2013 after becoming dual board-certified in Acute Care and Family Practice.  I enjoy collaborating with all the SDCA team members to provide excellent care for those with complex cardiovascular disease processes.  I am proud to be a part of the nurse practitioner team that is flexible, educated, strong, and motivated.  I am a member of the American Association of Critical Care Nurses.

I like to run, hike and ski.  I love spending time with my husband and daughter.  We enjoy our summers with our extended family in Minnesota and North Carolina boating and swimming on the lake.


IMG_7750 Julie crop

Julie Garside, MSN, APRN, ANP-BC:  I received my Bachelor degree in Biology from the University of Colorado, Boulder, in 1992, followed by a Bachelor of Science in Nursing from Regis University in 1996 with the honor of Sigma Theta Tau. I gained extensive nursing experience in a level one Emergency Department prior to graduating with honors from the University of Colorado Health Sciences Center in 2001 with a Master of Science in Nursing. I then followed my interests in cardiology patient care with Western cardiology and have continued my practice with SDCA since 2007.  I enjoy the challenges that cardiology brings on a daily basis.

I am a Colorado native, married with two boys. I love the outdoors and enjoy many activities including tennis, running, skiing, hiking, yoga, reading and of course, savoring quality time with my family.


Elizabeth Grossnickle, MSN, APRN, ANP-BC: I grew up in Indianapolis, Indiana.  I moved to Colorado to study integrative physiology and biology at the University of Colorado in Boulder.  During college, I worked as a CNA on the orthopedics floor of the hospital.  Soon after graduating, I earned a second bachelor degree, with high honors, from Metropolitan State College of Denver’s accelerated nursing program.  I gained nursing experience in critical care, spinal cord rehabilitation, and outpatient cardiology while working on my Master of Science in Nursing at the University of Colorado Health Sciences Center.   I am a member of Sigma Theta Tau Nursing Honors Society.  I was also nominated for the Daisy Award.  Shortly after attaining ANCC board certification as an adult nurse practitioner, I joined the SDCA team in 2012.  I really enjoy my coworkers and take pride in being part of such a great practice.

I spend my spare time with my friends and family.  I love traveling.  In fact, I’ve had a long-standing tradition of visiting at least one new country annually.  I engage in an active lifestyle, which consists of running, biking, hiking, and skiing.  I also like playing games, going to concerts, reading, and enjoy delicious food – especially when others cook it.


IMG_7719 Whitney crop

Whitney Groth, MSN, APRN, ANP-BC: I was raised in Arlington, Texas and began my nursing education at Texas Christian University with a Bachelor of Science in Nursing.  I worked at Parkland Hospital in Dallas in the cardiac intensive care unit. After moving to Denver, my experience in surgical and trauma intensive care, as well as working in the emergency department at Denver General, drove my desire to continue my education. I earned my Master of Science in Nursing, focusing on family practice, at the University of Colorado.  I am board-certified as an Adult Nurse Practitioner.  I joined SDCA in the summer of 2000.  I thoroughly love the field of cardiology and it’s ever-evolving therapies, procedures, and treatments, as well as the tried-and-true preventative arm, including diet and exercise.

When I began work at SDCA, I had a 5-month-old boy, and two years later came a little girl.  My husband and I have enjoyed watching their sports, and as a family, we’ve loved skiing and traveling together.  My perspective has changed a bit over the years, starting out as a young mother, and now having teenagers and aging parents, but my passion for learning and expanding my knowledge base, so that I can provide the highest level of care to our patients, is steadfast.   I look forward to many more rewarding years in this field.


Christine Harms, DNP, APRN, FNP-BC: I am a family nurse practitioner that joined the South Denver Cardiology family in May of 2018.  I was born and raised in Florida and obtained my first nursing degree at the age of 19 years old.  Shortly after, I achieved a bachelor’s of science in nursing at Arizona State University and practiced in several different specialties throughout my career. I graduated from the University of Colorado, Colorado Springs with a Doctorate of Nursing and became an independent nurse practitioner serving the community in a primary care setting.  My love for a challenge brought me to the SDCA team where I now play an important role in the lives of our patients.

I reside in Colorado with my husband, Dave, and we enjoy fitness, family, friends and the great outdoors.


Tessa Henderson, MSN, APRN, AGACNP-BC, FNP-BC: I am a native Coloradan from Littleton. I attained my Bachelor in the Science of Nursing from Regis University in 2004, then my Master of Science in Nursing from Colorado State University-Pueblo in 2012. I am board certified in acute care for adult and geriatric population, as well as family practice across the lifespan. My nursing experience has been focused on critical care in the emergency room, intensive care, and trauma units and as a Hospitalist Nurse Practitioner. I joined SDCA in 2018 and love being part of a collaborative team and making a difference in people’s lives. I am a member of the American Nurses Association, Sigma Theta Tau Nursing Honor Society and the Society of Hospital Medicine.

My family loves spending time together, especially with our dogs and cat. We also enjoy traveling and living an active lifestyle.


Brianna Jackson, MSN, APRN, ACNPC-AG: I earned a BS in Microbiology at Colorado State University in 1999. After several years working as an Immunohistochemist and Histotechnologist I decided to return to school for a career working more directly with patients. I graduated summa cum laude from the University of Colorado College of Nursing in 2009 and was a member of Sigma Theta Tau honor society. After 10 years as a telemetry and progressive care RN, I returned to school for my Masters of Science in Nursing at Colorado State University-Pueblo and am board certified as an Adult/Geriatric Acute Care nurse practitioner. I am excited to be working with the team of exceptional cardiology professionals I have enjoyed collaborating with throughout my nursing career.

I have lived in Colorado for 25 years and enjoy hiking, skiing, and camping with my family in our free time.



Paula McDermottPaula McDermott, MS, APRN, CCNS, CCRN, AACC: I am originally from South Dakota. I began my nursing education at South Dakota State University in 1986 as a Bachelor of Science degree with a major in Nursing and a minor in Military Science. My nursing residency was completed at Tripler Army Medical Center in Hawaii and continued at Fitzsimmons. I transitioned from the Army as a Captain to pursue higher education at the University of Colorado Health Science Center in 1993, where I earned my Master of Science in Nursing and graduated with honors as a Clinical Nurse Specialist. My clinical experience has been focused in critical care, cardiac transplant, cardiology, and now heart failure. Educating patients, colleagues, nurses, and the community are inspiring to me and I have taught workshops for professionals throughout my career. I joined SDCA in 2003 and now enjoy my focus in the Transitional Heart Failure Clinic. I am a member of the American College of Cardiology, Heart Failure Society of America, American Association of Critical-Care Nurses and the American Association of Heart Failure Nurses. I have been honored with the Regional Florence Nightingale Luminary Award.

Spending time with my husband and daughter is the source of my enjoyment. I also take great pleasure in shopping, staying fit, and meeting up with friends.


Shari Nieman, MSN, APRN, ACNP-BC, FNP-BC Advanced Practice Nursing Supervisor, Transitional Heart Failure Clinic Supervisor. I am originally from Hollywood, Florida and attended my first nursing school in Gainesville, Florida. I completed my educational degrees at Metropolitan State College and the University of Northern Colorado. My nursing experience includes caring for patients in intensive care, medical, surgical and burn units. I have also worked in community clinics prior to focusing only on cardiology in 1994. I joined SDCA in February 1999 and found my home caring for our patients in both the hospital and clinic settings. I have a great passion for cardiology, our practice, and our patients, and it keeps me up late nights studying quite often. I am a member of Sigma Theta Tau Nursing Honor Society, Colorado Nurses’ Association, American Nurses’ Association, American College of Cardiology, Heart Rhythm Society, and the American Academy of Nurse Practitioners. I have a wonderful family that enjoys the outdoor lifestyle offered in Colorado.

We spend a great majority of our time hiking, skiing, biking and you will often see us at concerts -as we all love music, singing, and dancing.


IMG_7734 Barb P cropBarbara Poole, MS, APRN, FNP-BC: I am originally from Jefferson City Missouri. My nursing career began in 1984 with my BSN from the University of Missouri – Columbia. I then continued on to study Counseling and earned a Masters of Arts degree from Colorado Christian University in 1994. My love for caring for patients drove me to continue my nursing education and pursue a Masters of Science at the University of Colorado- Health Sciences Center with a focus on Family Nurse Practitioner. My career began in Family Practice, but with my critical care, interventional radiology and cardiac cath lab nursing experience, I knew cardiology was the area and population of patients that guided my career choices. I joined South Denver in June of 2000. I am a member of the American College of Cardiology and of the Heart Rhythm Society. The collegial relationship with the other advanced practice nurses, the SDCA physicians, and the community providers is a very fulfilling part of my career at SDCA.  And, of course, the wide variety of patients with which I  interact, are what have kept me enjoying my career choice.

Enjoying Colorado outdoors is why so many of us enjoy living here and I am no exception.  My family and I love biking, hiking and the many cultural events that Denver has to offer.


IMG_7752 Bonnie cropBonnie Scheckenbach, MSN, APRN, ACNP-BC: As a child, I lived in many states including New York, Ohio, Pennsylvania and Illinois. I attended St. Mary’s College at Notre Dame, Indiana and graduated with a Bachelor of Science in Nursing in 1992. My nursing experience began at Northwestern Memorial Hospital in Chicago as an ICU nurse in the medical and cardiac intensive care units. I spent 6 years there as I continued my education with an advanced nursing degree. In May 1998, I graduated from the University of Illinois at Chicago with my Master of Science from the Acute Care Nurse Practitioner Program. Later that Summer I moved to Colorado with my husband Greg and was excited to join SDCA in February of 1999.  During my tenure at SDCA, I have been allowed to grow both professionally and personally working with such a supportive and well-respected group of physicians and nurse practitioners.  I continue our professional standards by maintaining my memberships with the American College of Cardiology, Heart Rhythm Society, and the American Nurses Association.

I have been married for greater than 20 years to my college sweetheart, Greg. In my spare time, I support my 3 children in their endeavors, including several sports that take us all over the country – and sometimes out of our country! I also enjoy time at home with our 2 pugs, Lola and Ruby. I am a rabid Notre Dame fan, and love to watch the Broncos, Nuggets and just about any college basketball and lacrosse.


Kristi Swim, MSN, APRN, FNP-BC: Originally, I am from Tennessee and Mississippi. I attended the University of Mississippi, where I obtained My Bachelor of Science in Nursing in 2001. I enjoyed caring for cardiology patients since my first nursing position at the University of Virginia in a cardiac ICU. After arriving in Colorado for a travel nursing position, I quickly realized Denver was my new home. I continued my studies at Regis University and earned my Master of Science with a specialty as a Family Nurse Practitioner in 2010. After a few years in the specialty of neurology, I returned to my passion for cardiology. My focus became cardiothoracic surgery for the past five years before joining SDCA in June 2018. I am excited to be part of such a talented group of NPs and physicians. I am an active member of Sigma Theta Tau Honor Society and American Academy of Nurse Practitioners.

My husband and I love to hike, camp, and travel, but have briefly placed those loves on hold while adjusting to being new parents.


Kaycee Timken, AG-ACNP-BC: I am originally from Hutchinson, Kansas. I attained my Associate Degree as a Registered Nurse from Hutchinson Community College in 1998 and then went on to earn a Bachelors of Science in Nursing from Wichita State University in 2007. I then continued to my Masters of Science in Nursing from Wichita State University in 2014.  I am board certified in acute care for adult and geriatric population.  My nursing experience has included ICU, cardiac cath lab, ER, cardiology, as well as nursing leadership. After graduating with my Master’s degree in 2014, we moved to Tennessee and I worked at Vanderbilt University Medical Center as a nurse practitioner caring for cardiology patients. In 2017 I accepted a position in the MICU at University of Colorado and we moved to Colorado.  I quickly realized that my passion truly is cardiology and I deeply missed caring for cardiology patients.  I joined SDCA in November of 2018. I enjoy being surrounded by colleagues that are passionate about cardiology, and provide new opportunities for growth and professional development each day.
I am married, have 2 kids and love to travel, hike and explore the outdoors. We love living in Colorado and wonder why it took us so long to move here.


Kelly Webster, MSN, APRN, AGACNP-BC: I am originally from Denver, Colorado, born at St. Joseph’s hospital. I attained my Associate Degree as a Registered Nurse from Arapahoe Community College in 2006, then went on to earn my Bachelor in Nursing from Chamberlain College of Nursing in 2010, with my most recent degree being a Masters of Science in Nursing from Colorado State University-Pueblo in 2016. My specialty includes acute care in the adult and geriatric population. My nursing experience has been focused on cardiology and critical care, as well as exposure to the surgery, medical and radiology fields. I joined SDCA in July of 2017 and love the amazing group of people I work with that are passionate about what they do, and the patients they care for. Cardiology is an endless learning opportunity and we have wonderful patients.

I am married, have 2 kids and love to travel, hike and explore the outdoors. Colorado is a perfect place for our family.


IMG_7736 Amy crop

Amy Wischmeyer, MSN, APRN, ACNP-BC: I grew up in Chicago Illinois and my ties to Colorado began while attending the University of Colorado Boulder, earning my Bachelor of Arts in Anthropology. Knowing that my purpose in life was more congruent with caring for people, I then obtained my Bachelor and Masters Degrees in the Science of Nursing from Rush University. Throughout the years, I have specialized in cardiovascular services and surgery. I joined our South Denver Team in 2013, and I enjoy being surrounded by colleagues that are passionate about cardiology, patient care mentor each other. I have continuous challenges and opportunities for growth every day.

I have three active boys and in my spare moments, I enjoy skiing, working on my mountain biking skills and running races.



IMG_7725 Barb V cropBarb Van Horne, BSN, APRN, FNP I am a native of Colorado, originally from Denver and grew up in Wheat Ridge. My nursing career began in 1975 with my BSN from Colorado University School of Nursing. I continued on to study and earn my Family Nurse Practitioner credential from Metropolitan State College in 1981. While I began my career in Family Practice, I quickly began to focus on cardiac patients, and I am proud to work with such a capable and caring team of people who are committed to doing the best for all of our patients. Having joined the South Denver team in 1983, I have been around long enough to see many life saving and preserving advances in cardiology.  I am also passionate about caring for the under-served and am appreciative that SDCA has supported my 4 missions with Global Health caring for people in the Amazon Jungle in Peru.

I have a great passion for fitness and just finished another Ride the Rockies bike tour across Colorado. When I am not riding, you may see me working toward my goal to climb all the Colorado 14ers. I am also studying Spanish with hopes for fluency one day. I have a long time marriage with my husband. Our daughter Elizabeth is living in France, where she studies, performs and writes music. She also teaches English to French native speakers.