What is William Day's NPI number?

William Day's National Provider Identifier (NPI) is 1023067394, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Day's specialty?

William Day is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).

Where is William Day located?

William Day's practice location on file with NPPES is 330 9th St, Florence, OR 97439-9470.

What is William Day's phone number?

The practice phone number listed in the NPPES registry for William Day is (541) 997-2820.

Is William Day's NPI active?

Yes — William Day's NPI (1023067394) is active in the NPPES registry as of the last update on 2009-12-16.

IndividualActive

William Day, M.D.

NPI 1023067394 · Surgery Physician · Florence, OR

William Day, M.D. is a Surgery Physician provider in Florence, OR (NPI 1023067394).

Provider details

NPI number: 1023067394
Entity type: Individual
Primary specialty: Surgery PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: MD16984 (OR)

Practice location

330 9th St

Florence, OR 97439-9470

Phone: (541) 997-2820

Fax: (541) 902-7533

Street-level locationGet directions

More OR providers

Mailing address

330 9th St

Florence, OR 97439-9470

Specialties & taxonomies

Surgery PhysicianPrimary208600000XLicense MD16984 (OR)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(92/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure33% of score
20 yrs in NPPES registry
Profile completeness33% of score
100% of core fields populated
Practice footprint20% of score
1 documented practice location
Open Payments transparency13% of score
Has Open Payments disclosures (2024)

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$44 across 2 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-05-06
Last updated: 2009-12-16

Frequently asked questions

What is William Day's NPI number?: William Day's National Provider Identifier (NPI) is 1023067394, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is William Day's specialty?: William Day is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
Where is William Day located?: William Day's practice location on file with NPPES is 330 9th St, Florence, OR 97439-9470.
What is William Day's phone number?: The practice phone number listed in the NPPES registry for William Day is (541) 997-2820.
Is William Day's NPI active?: Yes — William Day's NPI (1023067394) is active in the NPPES registry as of the last update on 2009-12-16.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Transparency — industry payments

Frequently asked questions