Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Nurse Practitioner

Kelli C. Williams, NP

Works at hospitals in Kailua, HI · Honolulu, HI · Hawaii

Summary

Kelli C. Williams, NP (Nurse Practitioner) is listed by Medicare at 2 hospitals in Kailua, HI and Honolulu, HI. NPI 1083680144. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Kelli C. Williams, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Nurse PractitionerPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
26Years since medical school (graduated 2000)
FemaleGender (as listed)
Castle Medical CenterGroup practice

Quick answers

Which hospitals does Kelli C. Williams work at?
Medicare's official clinician data lists Kelli C. Williams at 2 hospitals: Adventist Health Castle and The Queens Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Kelli C. Williams see patients?
Medicare's clinician data lists 1 practice location in Kailua, HI. Call before your visit to confirm the address.
What is Kelli C. Williams's specialty?
Medicare lists Nurse Practitioner as the primary specialty.
Does Kelli C. Williams accept Medicare assignment?
Yes. Medicare's clinician data says Kelli C. Williams accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Kelli C. Williams offer telehealth?
Medicare's clinician data says Kelli C. Williams offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Kelli C. Williams?
(808) 263-5015, as listed in official Medicare / NPI Registry data.
What is Kelli C. Williams's NPI number?
1083680144. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Kelli C. Williams works

Medicare's Facility Affiliation Data lists Kelli C. Williams at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Kelli C. Williams is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Kelli C. Williams as a member of this group (CMS data updated 2026-10-02).

  • Castle Medical Center77 clinicians in the group

Specialties

Find other clinicians: Nurse Practitioner, Hawaii →

Other nurse practitioners in Kailua

Clinicians with the same Medicare primary specialty in Kailua, HI — not a recommendation.

All nurse practitioners in Kailua →

Clinician information

CredentialNP
Graduation year2000
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1083680144
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians