NPPES file of Aug 9, 2026

Kassandra Alexis Williams, FNP-C

Nurse Practitioner · Denver, CO

Kassandra Alexis Williams, FNP-C is a nurse practitioner with a practice address in Denver, Colorado, and NPI 1114753811, issued on Sep 10, 2024. Check the license (Colorado APN.1000181-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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1114753811
Name
Kassandra Alexis Williams
Credential
FNP-C
Primary taxonomy
Nurse Practitioner 363L00000X
License number
APN.1000181-NP CO
Self-reported in NPPES; status is on the state search
Practice location
777 Bannock St, Denver, CO 80204
Phone
(303) 436-4949
Enumerated
Sep 10, 2024
Record last updated
Feb 27, 2026
Fax
(303) 602-4064
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest nurse practitioner records → All 1,260 in Colorado → Look up another NPI →

Also registered at 777 Bannock St

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

  1. Eric Aaltonen, M.D.Vascular & Interventional Radiology Physician1538340344
  2. Sarah Abbott, LCSWClinical Social Worker1326519042
  3. Ejaaz Abdulkabir, CNMAdvanced Practice Midwife1710551783
  4. Miren Aboitiz, NP-CWomen's Health Nurse Practitioner1568862282
  5. Edgar Acosta, MSWClinical Social Worker1467900381
  6. Shanie Adaime, RDHDental Hygienist1083318554

Verify Kassandra Alexis Williams 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.1000181-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

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Industry payments in 2024: $39.09

2 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kassandra Williams$39.09
  2. Specialty average$791.64

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Kassandra Alexis Williams among 1,260 nurse practitioner records in Colorado

Kassandra Alexis Williams, FNP-C is one of 1,260 nurse practitioner records with a practice address in Colorado. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 90% of them.

  • NPI issued2024 · 90% of these records are older, 7% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileNo · 53% of these records are
  • Record last updated2026 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in Colorado

There are 1,260 nurse practitioner records in Colorado.

All 1,260 in Colorado → Every provider in Denver → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Peggy Baikie, RN PNP NNPDenver, CO 802041174513063
  2. Andreas Brueggler, NPDenver, CO 802041528151297
  3. Stacy Calahan-Davisson, FNPDenver, CO 802041689691651
  4. Pamela Crawford, NPDenver, CO 802041386656536
  5. Annette Davis, NPDenver, CO 802041174637680
  6. Angela Fellers Lemire, NPDenver, CO 802041295892578
  7. M Hopman, NPDenver, CO 802041043234560
  8. Susan Jackson, NPDenver, CO 802041578577292

Common questions

What is Kassandra Alexis Williams, FNP-C's NPI number?

Kassandra Alexis Williams, FNP-C's National Provider Identifier (NPI) is 1114753811, issued on Sep 10, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Kassandra Alexis Williams, FNP-C located?

The NPPES record lists a practice address at 777 Bannock St, Denver, CO, 80204. Phone: (303) 436-4949. Providers update this record themselves, so call before visiting.

How can I verify Kassandra Alexis Williams, FNP-C's license?

NPPES lists Colorado license number APN.1000181-NP, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.