NPPES file of Aug 9, 2026

William Parker, APN

Family Nurse Practitioner · Parker, CO

William Parker, APN is a family nurse practitioner with a practice address in Parker, Colorado, and NPI 1417615345, issued on Dec 8, 2021. Check the license (Colorado APN.0999039-NP, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1417615345
Name
William Parker
Credential
APN
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License numbers
APN.0999039-NP CO
C-APN.0003548-C-NP CO
Self-reported in NPPES; status is on the state search
Practice location
12959 S Parker RD, Parker, CO 80134
Phone
(720) 842-4089
Enumerated
Dec 8, 2021
Record last updated
Jan 9, 2024
Medicare enrollment
Enrolled (PECOS I20220214000682); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 12959 S Parker RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Louise Bixby, RPHPharmacist1821432931
  2. Crystal Carmody, FNPFamily Nurse Practitioner1750880902
  3. Elizabeth Foged, FNP-CFamily Nurse Practitioner1750099289
  4. Rebekah Petkoff, FNP-BCFamily Nurse Practitioner1003069774
  5. Shelby Schwab, FNPFamily Nurse Practitioner1396315131
  6. Jeremy Silva CasasFamily Nurse Practitioner1518677194

Verify William Parker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Colorado board licenses this profession
    Search for license APN.0999039-NP
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Colorado license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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92% fewer Medicare Part D claims than the average family nurse practitioner in 2024

103 Medicare Part D claims for 73 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. William Parker103
  2. Specialty average1,305

Most prescribed

  1. Amoxicillin-Clavulanate Potass14 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): 88.9 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.

  1. Qualityout of 100 · 30% of the final score91.2
  2. Costout of 100 · 30%71.7
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. The Little Clinic OF Colorado, LLCParker, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

88 family nurse practitioner records list a practice address in Parker

They are 88 of the 1,871 NPPES records with a practice address in Parker, and 3,492 family nurse practitioner records in Colorado.

Other family nurse practitioner records in Colorado

  1. Abbey Aaroe, FNPCanon City, CO1922685189
  2. Simone Abachiche, NP-CColorado Springs, CO1801566518
  3. Christina AbbottLongmont, CO1962039172
  4. Patricia Abbott, ARNPAurora, CO1962452227
  5. Isadora Abel, FNPDenver, CO1275250391
  6. Sally Abell, DNPColorado Springs, CO1699356733
  7. Sarah AbercrombieGrand Junction, CO1093490567
  8. Jenny Abernathy, FNPErie, CO1407059355
  9. Gabriela Abeyta, APRN-CNP, FNP-CColorado Springs, CO1891506515
  10. Taylor Abner, APRN, FNPGolden, CO1407582240

Common questions

What is William Parker, APN's NPI number?

William Parker, APN's National Provider Identifier (NPI) is 1417615345, issued on Dec 8, 2021. An NPI identifies a provider in billing; it is not a license.

Where is William Parker, APN located?

The NPPES record lists a practice address at 12959 S Parker RD, Parker, CO, 80134. Phone: (720) 842-4089. Providers update this record themselves, so call before visiting.

How can I verify William Parker, APN's license?

NPPES lists Colorado license number APN.0999039-NP, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.

How much does William Parker, APN prescribe under Medicare Part D?

In 2024, William Parker, APN had 103 Medicare Part D claims for 73 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

What is William Parker, APN's MIPS final score?

The 2023 MIPS final score is 88.9 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.