NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William Lantz Effinger I, D.O.,M.S.

Family Medicine Physician in Tallahassee, FL · enumerated 2011 · practices at Effinger Health, PA.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1225327380

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Registry record

Entity type Individual (Type 1)
Name Dr. William Lantz Effinger I
Credential D.O.,M.S.
Sex Male
Practice address Tallahassee, FL, 32308
Phone (888) 698-2714
Fax (888) 698-2714
Enumeration date Mar 29, 2011
Last updated in NPPES Jul 21, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License OS11271 (FL) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What specialty is William Effinger?
William Effinger is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-21.