1. Home
  2. Directory
  3. Hawaii
  4. Kailua Kona
  5. Clinic Center
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

HAROLD ANDREW WILLIAMS M.D.
NPI 1427211549
Clinic/Center in Kailua Kona, HI

Active since July 09, 2008PECOS EnrolledAccepts Medicare Assignment
75-5995 KUAKINI HWY STE 513, KAILUA KONA, HI 96740(808) 365-2297 Get Directions Write a Review

NPPES record last updated: October 14, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Harold Andrew Williams M.d. NPPES

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

HAROLD ANDREW WILLIAMS M.D. (NPI 1427211549) is an individual clinic/center provider in Kailua Kona, Hawaii, licensed in Hawaii (MD19604) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS and is a graduate of Other (2007).

NPPES Registry Identity

NPI1427211549
Entity TypeIndividualMale
Primary Taxonomy261Q00000X
Provider Legal NameHAROLD ANDREW WILLIAMSCredential: M.D.
Location Address75-5995 KUAKINI HWY STE 513Kailua Kona, HI 96740-2124
Mailing Address73-1040 Ahikawa StKailua Kona, HI 96740-9408 · (256) 270-3040
Phone(808) 365-2297
Sole ProprietorYes
Medical School CMSOtherGraduated 2007
Enumeration DateJuly 9, 2008
Last NPPES UpdateOctober 14, 2026
NPPES CertifiedOctober 14, 2026
✔ NPI 1427211549 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/CenterAmbulatory Health Care Facilities
Taxonomy Code261Q00000X
License✔ Licensed in HI · MD19604
Definition
A facility or distinct part of one used for the diagnosis and treatment of outpatients. Clinic/Center is irregularly defined, sometimes being limited to organizations serving specialized treatment requirements or distinct patient/client groups (e.g., radiology, poor, and public health).
75-5995 KUAKINI HWY STE 513, Kailua Kona, HI 96740
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include 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

Harold Andrew Williams M.d. 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 ID6103081773
PECOS Enrollment IDI20180813001866
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 Reassignment

Medicare enrollment records show Harold Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Transformation Health Network
57 mi
Urgent Care
75-5995 KUAKINI HWY STE 513
Kailua Kona, HI 96740
  • Reassigned Medicare billing, Hawaii enrollment
  • 5 clinicians in this Medicare group
NPI 1144621285 (808) 365-2297

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 5

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 low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
83 services71 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
46 services46 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
21 services20 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
16 services16 patients
Urinalysis, manual test 81002
A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.
11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96740 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
$180.05 typical visit price
range $60.53 – $180.05
Typical copayment $45.01 (range $15.13 – $45.01)
Most-billed visit code 99205
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
99%198 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KELLIE ACOSTA PA-C
Physician Assistant (Medical)
75-5995 KUAKINI HWY STE 513
KAILUA KONA, HI 96740
Hawaii County (808) 365-2297
TRANSFORMATION HEALTH NETWORK
Clinic/Center (Urgent Care)
75-5995 KUAKINI HWY STE 513
KAILUA KONA, HI 96740
Hawaii County (808) 365-2297
TRANSFORMATION HEALTH NETWORK
Clinic/Center (Urgent Care)
75-5995 KUAKINI HWY STE 513
KAILUA KONA, HI 96740
Hawaii County (808) 365-2297
DR. RONALD ROSS ROBINSON M.D.
Anesthesiology
75-5995 KUAKINI HWY STE 513
KAILUA KONA, HI 96740
Hawaii County (808) 365-2297

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 Harold Williams's NPI number?

The NPI number for Harold Williams is 1427211549. It was assigned to this individual provider in the NPPES registry on July 9, 2008.

Where is Harold Williams located?

Harold Williams practices at 75-5995 Kuakini Hwy Ste 513, Kailua Kona, HI 96740. The listed phone number is (808) 365-2297.

What is Harold Williams's specialty?

The primary specialty registered for this NPI is Clinic/Center with taxonomy code 261Q00000X.

Is Harold Williams enrolled in Medicare?

Yes. Harold Williams 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 organization bills Medicare for Harold Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Harold Williams reassigns Medicare benefits to Transformation Health Network (Kailua Kona, HI). The 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 Harold Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Harold Williams accept?

Health plans from HMSA list Harold Williams 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.

When was this NPI record last updated?

The NPPES record for Harold Williams was last updated on October 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.