What is William Lefing's NPI number?

William Lefing's National Provider Identifier (NPI) is 1831207091, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is William Lefing's specialty?

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

Where is William Lefing located?

William Lefing's practice location on file with NPPES is 2940 Lower Lincoln Ave, Oceanside, NY 11572.

What is William Lefing's phone number?

The practice phone number listed in the NPPES registry for William Lefing is (516) 678-3966.

Is William Lefing's NPI active?

Yes — William Lefing's NPI (1831207091) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

William Lefing, MD

NPI 1831207091 · Dermatology Physician · Oceanside, NY

William Lefing, MD is a Dermatology Physician provider in Oceanside, NY (NPI 1831207091).

Provider details

NPI number: 1831207091
Entity type: Individual
Primary specialty: Dermatology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 90586 (NY)

Specialties & taxonomies

Dermatology PhysicianPrimary207N00000XLicense 90586 (NY)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 index)

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

Registry tenure38% of score
19 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.

Practice location

2940 Lower Lincoln Ave

Oceanside, NY 11572

Phone: (516) 678-3966

Street-level locationGet directions

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Mailing address