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Northlake Internal Medicine

Internal Medicine Physician in Lakeport, CA · enumerated 2007 · authorized official John Schweifler, Owner.

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

National Provider Identifier

1447469457

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Registry record

Entity type Organization (Type 2)
Legal business name Northlake Internal Medicine
Practice address 5150 Hill Rd E, Suite B, Lakeport, CA, 95453
Phone (707) 263-7082
Fax (707) 263-0816
Enumeration date May 22, 2007
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License ZZZ18509Z (CA) Primary

Authorized official

Name John Schweifler
Title Owner
Phone (707) 263-7082

Other identifiers

Identifier Type State Issuer
GROO88800 Medicaid CA -

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 type of organization is Northlake Internal Medicine?
Northlake Internal Medicine is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.