What is William Larkin's NPI number?

William Larkin's National Provider Identifier (NPI) is 1780755033, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Larkin's specialty?

William Larkin is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).

Where is William Larkin located?

William Larkin's practice location on file with NPPES is 1413 Washington St, Columbus, IN 47201-5725.

What is William Larkin's phone number?

The practice phone number listed in the NPPES registry for William Larkin is (812) 372-1919.

Is William Larkin's NPI active?

Yes — William Larkin's NPI (1780755033) is active in the NPPES registry as of the last update on 2012-01-05.

IndividualActive

William Larkin, O.D.

NPI 1780755033 · Optometrist · Columbus, IN

William Larkin, O.D. is a Optometrist provider in Columbus, IN (NPI 1780755033).

Provider details

NPI number: 1780755033
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: O.D.
Sex: Male
Sole proprietor: No
License: 18002025A (IN)

Practice location

1413 Washington St

Columbus, IN 47201-5725

Phone: (812) 372-1919

Fax: (812) 375-0863

Street-level locationGet directions

Mailing address

1413 Washington St

Columbus, IN 47201-5725

Specialties & taxonomies

OptometristPrimary152W00000XLicense 18002025A (IN)
Eye and Vision Services Providers

Profile Score

Detailed profile(91/100 index)

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

Registry tenure38% of score
20 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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.

Enumerated: 2006-11-10
Last updated: 2012-01-05

Frequently asked questions

What is William Larkin's NPI number?: William Larkin's National Provider Identifier (NPI) is 1780755033, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is William Larkin's specialty?: William Larkin is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
Where is William Larkin located?: William Larkin's practice location on file with NPPES is 1413 Washington St, Columbus, IN 47201-5725.
What is William Larkin's phone number?: The practice phone number listed in the NPPES registry for William Larkin is (812) 372-1919.
Is William Larkin's NPI active?: Yes — William Larkin's NPI (1780755033) is active in the NPPES registry as of the last update on 2012-01-05.

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

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions