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

Allan H Klass, M D

Internal Medicine Physician in Encino, CA · enumerated 2006 · practices at Gerald M. Weingarten, M.D. A Medical Corporation.

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

National Provider Identifier

1346261039

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Registry record

Entity type Individual (Type 1)
Name Allan H Klass
Credential M D
Sex Male
Practice address Encino, CA, 91436
Phone (818) 986-1357
Fax (818) 986-3282
Enumeration date Jul 21, 2006
Last updated in NPPES Jul 15, 2010

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G12168 (CA) 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

Where does Allan Klass practice?
The practice location on file with NPPES is in Encino, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Allan Klass?
The National Provider Identifier (NPI) for Allan Klass is 1346261039, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-15.