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Dr. William Leif Ericksen, MD

Anesthesiology Physician in Johnson City, NY · enumerated 2016.

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

National Provider Identifier

1821446402

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Registry record

Entity type Individual (Type 1)
Name Dr. William Leif Ericksen
Credential MD
Sex Male
Practice address 156 Corliss Ave Apt 107, Johnson City, NY, 13790
Phone (607) 763-6735
Fax (607) 763-6736
Enumeration date May 24, 2016
Last updated in NPPES Jun 28, 2021

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 304634 (NY) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 is the NPI number for William Ericksen?
The National Provider Identifier (NPI) for William Ericksen is 1821446402, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Ericksen practice?
The practice location on file with NPPES is in Johnson City, NY. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-28.