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Our Providers

Continuous Care

Dr. Priyantha Ranaweera

Interventional Cardiologist

Priyantha Ranaweera, MD, MHCM, FRACP, FACC, is a Harvard-trained interventional cardiologist. He started Heart and Vascular Clinics in 2012 to better serve the needs of the Flint Hills region.

Caring for patients in the Manhattan area since 2007, he created Manhattan Medical Group in 2018 to provide an integrated care model with primary care and specialized care.

Under his leadership, Manhattan Medical Group is dedicated to the long-term success of patients’ health and the community.

Dr. Ranaweera completed his undergraduate work in Sri Lanka and an internal medicine residency in New Zealand and Australia. He continued his education with the following training:

  • Coronary Angioscopy Training in Japan

  • Coronary CT Fellowship in Germany

  • Cardiology Fellowship in Australia

  • Peripheral Interventional Fellowship at Harvard Medical School

  • Coronary Interventional Fellowship at Harvard Medical School

  • Master of Science in Healthcare Leadership from Harvard University

Dr. Priyantha Ranaweera, Interventional Cardiologist

Dr. Ranaweera diagnoses and treats patients with peripheral artery disease, coronary artery disease, and arrhythmias among other cardiovascular diseases. He specializes in peripheral interventions, heart catheterizations, pacemaker and ICD implants, and general cardiology.


Dr. Ranaweera sees patients at our Manhattan, Junction City, Wamego, Abilene, Clay Center, and Council Grove clinic locations.

Larry Pierce 

Physician Assistant

Larry Pierce Jr., PA-C, joined Manhattan Medical Group in March 2021 after serving 21 years in the United States Army. Larry has over ten years of experience in family medicine. He was awarded a Master’s Degree in Physician Assistant Studies from the University of Nebraska Medical Center.


Outside of work, Larry loves to hunt and is an expert at taekwondo. He currently volunteers at the Global Traditional Martial Arts (GTMA) school in Junction City, Kansas. Larry is also a big fan of the Kansas City Chiefs and the Colorado Avalanche professional hockey team.


Last but not least, his advice to his patients is that we must enjoy life to the fullest as we have only one! 

Larry Pierce, Physician Assistant

Becca Haugaard

Nurse Practitioner

Becca Haugaard, APRN-FNP is certified in both wound care and foot care. Becca leads our Wound Care Clinic.


She Specializes In;

  • Compression Therapy

  • Sharps Debridement

  • Adjunct Therapy Including Human Skin Equivalents and Wound Vac

She is also certified to do routine foot care and can provide diabetic foot checks and diabetic foot care.

Together with our vascular specialists, she also provides surgical debridement of non-healing wounds.

Becca Haugaard, Nurse Practitioner

Abby Suddarth

Physician Assistant

Abby Suddarth, PA-C, is a certified Physician Assistant who is excited to offer virtual telehealth appointments.

She graduated from the Butler University Physician Assistant Program with a bachelor’s degree in health sciences. She initially joined Dr. Ranaweera at Mercy Regional in the fall of 2007 when her husband was stationed at Fort Riley. She has also worked in Internal Medicine and Soldier Readiness Processing.

She enjoys spending time with her family, homeschooling their three girls, practicing her photography skills, reading, and exercising.

Abby Suddarth, Physician Assistant

Tyson Nickelson

Nurse Practitioner

Tyson Nickelson, MSN, FNP-C is an advanced practice nursing provider with extensive experience in healthcare, particularly in the care of cardiac patients and in the Intensive Care Unit.

He Specializes In:

  • Cardiology

  • Diseases Affecting Veins

Tyson Nickelson, Nurse Practitioner

Joshua Wichman

Nurse Practitioner

Joshua Wichman, NP-C, is an advanced practice provider who specializes in cardiology and vascular diseases.

He joined Manhattan Medical Group in 2021. Josh is currently accepting new patients at our cardiology practice.

Joshua Wichman, Nurse Practitioner

Amanda Malone

Nurse Practitioner

Amanda Malone, FNP-C.

She received her undergraduate degree in Microbiology/Gerontology from Kansas State. She got her Nursing degree from The University of Saint Mary. Then she went on to get her Nurse Practitioner degree from The University of Cincinnati. 

Amanda is passionate about her work and helping others. She loves to hear everyone's stories and learn about the people in her community. She says that her role is to help her patients heal themselves! She likes to lighten the burden where she can but it is important to respect that the patient is the one doing the vast majority of the work.

Outside of work, she maintains a busy life. She is married and has two young children. She also has two dogs and is a huge animal lover. She enjoys attending K-State games. She loves to travel to see new cultures and try their foods.

She joined Manhattan Medical Group in 2023. 

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