Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mrs. Onna Klooster, FNP

Individual provider Primary Care Nurse Practitioner · NPI 1013387851

Mrs. Onna Klooster, FNP is a Nurse Practitioner in Westminster, Colorado. Qualified in 2014, 12 years ago. Practices with Catholic Health Initiatives Colorado, a 1,266-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
12
Licensed in
CO
In the registry since
2015
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Practice location Address checks out

8510 Bryant St 200
Westminster, CO 80031-3844
Phone: (303) 430-5560
Fax: (303) 430-5565
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2551 W 84th Ave, Westminster, CO 80031-3807 — (303) 430-5560

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence APN.0991629-NP (CO)
Primary Care Nurse Practitioner Taxonomy 363LP2300X · Licence 0991629 (CO)

Record details

NPI number1013387851
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedOctober 6, 2015
Last updated in NPPESAugust 27, 2025
Certification dateAugust 27, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Catholic Health Initiatives Colorado — 1266 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations7 on file with Medicare

Other providers in Westminster