March Christensen, Owner and Lead PhysicianCastle Pines Urgent Care and Family Practice is a full-service private practice serving the on-going healthcare needs and the after hour/weekend/urgent care needs of the Castle Pines community. Staffed by a physician, nurse practitioners, and physician assistants, we are positioned to meet the medical needs of the Castle Pines community seven days a week.


Our Staff


Medical Director, Family Medicine, Sports Medicine

Mark Christensen, MD, CAQSM
Board Certified in Family Medicine & Sports Medicine


Emergency Medicine, Family Medicine, Sports Medicine

Heidi K. Christensen, MD, CAQSM, FACEP
Board Certified Physician


Family Medicine, Occupational Medicine

Nohelani Church, PA-C
Board Certified Physician Assistant


Family Medicine, Occupational Medicine

Lorin Rasel, RN, MSN, FNP-C
Board Certified Family Nurse Practitioner


Family Medicine


Chelsea Trierweiler, NP

Medical Assistant/Limited Scope Radiology Technician

 Brittany Urban

 MA with limited scope,  graduated from Anthem College in 2010, has one and a half years of experience working in a busy urgent care/occupational medicine clinic in Denver.  Recently married with one beautiful daughter. Brittany enjoys working in the medical field because “you never know what will walk through the door.” She loves new experiences and is happy to learn different things each day.  She hopes to pursue education in ultrasounds in the future.


Medical Assistant/Limited Scope Radiology Technician

Lian Asbury

I was born and raised in Colorado. 2 years ago I decided to go back to college to be an X-ray Technician. I joined Anthem College where I met my best friend and love of my life. We got married this August and I now have a beautiful family with him and my 9 year old step daughter. I graduated school last year and did my 3 month internship for school here at Castle pines Urgent Care and Family Practice. I fell in love with everyone here and got hired at the beginning of the year. I'm so excited to be here and I look forward to serving all of your medical needs along with the great team we have here at Castle Pines Urgent Care and Family Practice!


Front Desk

Edyta Sakwerda

has lived in Colorado since 1996, is the mom of two children, and has a degree in art history. She has worked in the office and customer service environment for four year and loves to work with people.