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DR. WILLIAM MONTAGUE DOWNS M.D.
NPI 1164527537
Emergency Medicine in Lihue, HI

Active since September 13, 2006PECOS Enrolled
4457 PAHEE ST, LIHUE, HI 96766(808) 245-7277(808) 245-5006 Get Directions Write a Review

NPPES record last updated: February 23, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. William Montague Downs M.d. NPPES

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

DR. WILLIAM MONTAGUE DOWNS M.D. (NPI 1164527537) is an individual emergency medicine provider in Lihue, Hawaii, licensed in Hawaii (MD-2101) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1164527537
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. WILLIAM MONTAGUE DOWNSCredential: M.D.
Location Address4457 PAHEE STLihue, HI 96766-2032
Mailing Address4457 Pahee St Ste BLihue, HI 96766-2032 · (808) 245-7277 · Fax (808) 245-1009
Phone(808) 245-7277
Fax(808) 245-5006
Sole ProprietorNo
Enumeration DateSeptember 13, 2006
Last NPPES UpdateFebruary 23, 2026
NPPES CertifiedFebruary 23, 2026
✔ NPI 1164527537 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in HI · MD-2101
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
4457 PAHEE ST, Lihue, HI 96766
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Montague Downs M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96766 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.

Other Providers at the Same Location NPPES 3

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

MIRIAM IMAI RN
Registered Nurse
4457 PAHEE ST
LIHUE, HI 96766
Kauai County (808) 245-7277
KAUAI HOSPICE INC
Hospice Care, Community Based
4457 PAHEE ST
LIHUE, HI 96766
Kauai County (808) 245-7277
LINDA CROCKER LCSW
Social Worker (Clinical)
4457 PAHEE ST
LIHUE, HI 96766
Kauai County (808) 977-8495

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 William Downs's NPI number?

The NPI number for William Downs is 1164527537. It was assigned to this individual provider in the NPPES registry on September 13, 2006.

Where is William Downs located?

William Downs practices at 4457 Pahee St, Lihue, HI 96766. The listed phone number is (808) 245-7277.

What is William Downs's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is William Downs enrolled in Medicare?

Yes. William Downs is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Downs was last updated on February 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.