Who We Are

Our staff is committed to providing the highest quality care for our patients. 


We are proactive — providing clinical staff to consult with patients about healthy choices.

We are dedicated — following up with patients at night, on weekends and at their homes, if needed.

We believe in empowerment — giving our patients the information they need to make their own healthcare decisions.


Dr. Priyantha Ranaweera

Interventional cardiologist

Dr. Priyantha Ranaweera is a Harvard-trained interventional cardiologist who works to meet the healthcare 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 urgent care, 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 specializes in:

  • Peripheral interventions

  • Device implantation

  • Heart catheterizations


Dr. Ramez Smairat

Interventional cardiologist

Ramez Smairat, MD, RPVI, FACC, FSCAI, is a board certified interventional cardiologist. He also has board certifications in internal medicine, echocardiography, nuclear cardiology, cardiovascular medicine and vascular imaging.

He specializes in:

  • Nuclear cardiology

  • Radial access peripheral interventions

  • Heart catheterizations

Dr. Smairat graduated from the University of Jordan and completed his residency and fellowships at the University of Miami, University of Florida and Mayo Clinic, including:

  • Research fellowship at Mayo Clinic

  • Internal medicine residency at University of Miami

  • Cardiovascular disease fellowship at University of Miami

  • Interventional cardiology fellowship at University of Florida

He appreciates being part of people's lives during a vulnerable time and is happy to be able to help them. He enjoys elevating awareness of illnesses and helping patients better manage them.

Dr. Caitlyn Nguyen

Family Medicine Physician

Caitlyn Nguyen, MD, is board certified in family medicine. She is a Liberal, Kansas, native and a graduate of the University of Kansas School of Medicine-Kansas City.

As a primary care provider, she specializes in:

  • Women's health

  • Geriatrics (older adults)

  • Chronic disease management

  • In-office procedures such as orthopedic injections and biopsies

Away from the office, she is married and has six pets: five dogs and a pig.

Dr. Lan Ly

Family Medicine Physician

Lan Ly, MD, is board certified in family medicine. She is a Wichita native and University of Kansas School of Medicine-Wichita graduate.

As a primary care provider, she specializes in:

Away from the office, Dr. Ly is a foodie and enjoys traveling the world in search of new food adventures — South Korea is her favorite place so far. She is married and has two dogs.

Hollie Hall

Nurse practitioner

Hollie Hall, NP-C, specializes in cardiology and diseases affecting veins.

She specializes in:

  • Radio-frequency ablations

  • Sclerotherapy

She graduated from Baker University with a degree in nursing and received a master's degree from the University of Phoenix.

She began her career in the cardiology department of Via Christi Hospital in 2011. She joined Heart and Vascular Clinics in 2016.

She is married to former NFL and Kansas State football alum Joe Hall. They have 4 children: Joe, Jorryn, Joss and Jagger. She enjoys spending time with her family and can be found cheering at her children's sporting events.

Amanda Nall

Nurse practitioner

Amanda Nall, NP-C, is an advanced practice nursing provider with extensive experience in healthcare.

She specializes in cardiology and diseases affecting veins.

Jordan Chen

Registered dietitian

Jordan Chen, MS, RD, LD, is a registered dietitian who provides consultations on healthy diet and lifestyle changes.


She is a cardiovascular and clinical dietitian with experience in diabetes research and a passion for helping others achieve their nutrition goals.

Her specialties are;

  • Weight loss

  • Nutrition for cardiovascular disease

  • Diabetes education

  • Food allergies and gastrointestinal issues.

Becca Haugaard

Becca Haugaard, RN, WCC, CFCS, is a wound certified nurse who leads our Wound Care Clinic.


She specializes in;

  • Compression therapy

  • Sharps debridement

  • Topical oxygen therapy

  • 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.

Our Clinics

MMG Primary Care

2900 Amherst Ave.

Manhattan, KS 66503


Hours: 8am-5pm Monday-Friday

Get Directions

Wound Care Clinic - Manhattan

2900 Amherst Ave.

Manhattan, KS 66503


Hours: 8am-4pm Monday-Thursday

Get Directions

Heart and Vascular Clinics - Manhattan

200 Research Dr.

Manhattan, KS 66503


Hours: 8am-5pm Monday-Thursday

Get Directions

Outreach clinics in Abilene, Clay Center, Council Grove, Junction City & Wamego

Visit the website

Vein Clinic of Kansas - Manhattan

2900 Amherst Ave.

Manhattan, KS 66503


Hours: 8am-5pm Monday-Thursday

Get Directions

Outreach clinic in Junction City

Visit the website