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KAREN LOUISE DAVIS MSN
NPI 1275863870
Nurse Practitioner in Hilo, HI

Active since January 04, 2010PECOS EnrolledAccepts Medicare Assignment
275 PONAHAWAI ST STE 202, HILO, HI 96720(808) 523-0445(808) 356-3380 Get Directions Write a Review

NPPES record last updated: April 15, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 15, 2024, Apr 9, 2024 (2 updates tracked since 2024).

About Karen Louise Davis Msn NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KAREN LOUISE DAVIS MSN (NPI 1275863870) is an individual nurse practitioner in Hilo, Hawaii, licensed in Hawaii (APRN-4417-0) and active in the NPI registry since January 2010. She is enrolled in Medicare PECOS, is affiliated with Hilo Medical Center, and maintains a secondary practice location in Honolulu.

NPPES Registry Identity

NPI1275863870
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameKAREN LOUISE DAVISCredential: MSN
Location Address275 PONAHAWAI ST STE 202Hilo, HI 96720-3074
Mailing Address1520 Liliha St Ste 601Honolulu, HI 96817-3564 · (808) 523-0445 · Fax (808) 356-3380
Phone(808) 523-0445
Fax(808) 356-3380
Sole ProprietorNo
Medical School CMSOtherGraduated 1991
Enumeration DateJanuary 4, 2010
Last NPPES UpdateApril 15, 20242 updates tracked since enumeration
NPPES CertifiedApril 15, 2024
✔ NPI 1275863870 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
Licenses✔ Licensed in HI · APRN-4417-0✔ Licensed in HI · RN-116716-0
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
275 PONAHAWAI ST STE 202, Hilo, HI 96720
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Other Names 1

Former Name (1)Karen Louise Moyer

Secondary Practice Location 1

Location 11520 Liliha St Ste 601Honolulu, HI 96817-3564 · Phone (808) 523-0445 · Fax (808) 356-3380

Other Identifiers 1

Other12093067HI · Caqh

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AmeriHealth Caritas Next, HMSA.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Karen Louise Davis Msn is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4385772698
PECOS Enrollment IDI20240307002299
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Karen Davis reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hawaii Kidney Specialists, LLP
211 mi
Nephrology
1520 LILIHA ST STE 601
Honolulu, HI 96817
  • Reassigned Medicare billing, Hawaii enrollment
  • 32 clinicians in this Medicare group
NPI 1750323440 (808) 523-0445
Christiana Care Health Services, Inc
4,814 mi
Family Medicine
722 YORKLYN RD STE 400
Hockessin, DE 19707
  • Reassigned Medicare billing, Delaware enrollment
  • 1,531 clinicians in this Medicare group
NPI 1134104565 (302) 235-2351
Nephrology Associates PA
4,817 mi
Nephrology
4923 OGLETOWN STANTON RD, SUITE 200
Newark, DE 19713
  • Reassigned Medicare billing, Delaware enrollment
  • 64 clinicians in this Medicare group
NPI 1407805203 (032) 225-0451

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
44 services31 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
40 services14 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
12 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Hilo Medical Center

Acute Care Hospitals · Hilo, HI
2/5 CMS rating
OwnershipGovernment - State
CMS Certification Number120005
Location1190 Waianuenue AvenueHilo, HI 96720 · Hawaii County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96720 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$92.50 typical visit price
range $60.53 – $180.05
Typical copayment $23.12 (range $15.13 – $45.01)
Most-billed visit code 99203
Established Patient
$105.65 typical visit price
range $20.09 – $147.56
Typical copayment $26.41 (range $5.02 – $36.89)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Karen Davis's NPI number?

The NPI number for Karen Davis is 1275863870. It was assigned to this individual provider in the NPPES registry on January 4, 2010. The provider is also known as Karen Louise Moyer.

Where is Karen Davis located?

Karen Davis practices at 275 Ponahawai St Ste 202, Hilo, HI 96720. The listed phone number is (808) 523-0445.

What is Karen Davis's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Karen Davis enrolled in Medicare?

Yes. Karen Davis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Karen Davis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Karen Davis reassigns Medicare benefits to 3 organizations: Hawaii Kidney Specialists, LLP (Honolulu, HI), Christiana Care Health Services, Inc (Hockessin, DE) and Nephrology Associates PA (Newark, DE). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Karen Davis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Karen Davis accept?

Health plans from AmeriHealth Caritas Next and HMSA list Karen Davis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Karen Davis affiliated with any hospitals?

According to CMS data, Karen Davis is affiliated with Hilo Medical Center.

When was this NPI record last updated?

The NPPES record for Karen Davis was last updated on April 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.