Onna Klooster, FNP
Family Nurse Practitioner · Westminster, CO
Onna Klooster, FNP is a family nurse practitioner with a practice address in Westminster, Colorado, and NPI 1013387851, issued on Oct 6, 2015. Check the license (Colorado APN.0991629-NP, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Onna Klooster
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- APN.0991629-NP CO
0991629 CO
Self-reported in NPPES; status is on the state search - Practice location
- 8510 Bryant St, Westminster, CO 80031
- Phone
- (303) 430-5560
- Enumerated
- Oct 6, 2015
- Record last updated
- Aug 27, 2025
- Fax
- (303) 430-5565
- Medicare enrollment
- Enrolled (PECOS I20151216002327); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 3,492 in Colorado → Look up another NPI →
Also registered at 8510 Bryant St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Marny Eulberg, MDFamily Medicine Physician1417968454
- Sarah Liegl, M.D.Family Medicine Physician1376624114
Verify Onna Klooster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license APN.0991629-NPCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average family nurse practitioner in 2024
4,283 Medicare Part D claims for 322 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 204 claims were for opioids.
Most prescribed
- Atorvastatin Calcium325 claims
- Levothyroxine Sodium190 claims
- Omeprazole159 claims
- Lisinopril152 claims
- Gabapentin151 claims
- Losartan Potassium117 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 88.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $34.87
2 payments; by number, the most common kind was food and beverage; the largest payer was Hologic Sales and Service, LLC. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Catholic Health Initiatives ColoradoWestminster, CO
- Select Physical Therapy OF West Denver Limited PartnershipThornton, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Onna Klooster among 3,492 family nurse practitioner records in Colorado
Onna Klooster, FNP is one of 3,492 family nurse practitioner records with a practice address in Colorado. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 33% of them.
- NPI issued2015 · 33% of these records are older, 63% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2014 · median 2019 among the 1,950 with a school on file
- Record last updated2025 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
58 family nurse practitioner records list a practice address in Westminster
They are 58 of the 2,492 NPPES records with a practice address in Westminster, and 3,492 family nurse practitioner records in Colorado.
All 3,492 in Colorado → Every provider in Westminster → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Katie Ballard, FNP-CWestminster, CO 800311780108159
- Catherine Calahan, CRNPWestminster, CO 800311558715045
- Erin DanielsWestminster, CO 800311659889400
- Melissa Grob, APRNWestminster, CO 800311225579980
- Gina Hutchins, NPWestminster, CO 800311740516103
- Susan Jager, NPWestminster, CO 800311134117583
- Allison Kamm, CRNPWestminster, CO 800311225511819
- Joni King, NPWestminster, CO 800311164560520
Common questions
What is Onna Klooster, FNP's NPI number?
Onna Klooster, FNP's National Provider Identifier (NPI) is 1013387851, issued on Oct 6, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Onna Klooster, FNP located?
The NPPES record lists a practice address at 8510 Bryant St, Westminster, CO, 80031. Phone: (303) 430-5560. Providers update this record themselves, so call before visiting.
How can I verify Onna Klooster, FNP's license?
NPPES lists Colorado license number APN.0991629-NP, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Onna Klooster, FNP prescribe under Medicare Part D?
In 2024, Onna Klooster, FNP had 4,283 Medicare Part D claims for 322 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Onna Klooster, FNP's MIPS final score?
The 2023 MIPS final score is 88.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.