Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alan Irving Mandelberg, M.D.

Ophthalmology Physician in North Hollywood, CA · enumerated 2007.

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

National Provider Identifier

1659422582

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Registry record

Entity type Individual (Type 1)

Name Dr. Alan Irving Mandelberg

Credential M.D.

Sex Male

Practice address 4418 Vineland Ave, #106, North Hollywood, CA, 91602

Phone (818) 762-0647

Fax (818) 762-7834

Enumeration date Jan 16, 2007

Last updated in NPPES Apr 22, 2008

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G39019 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00G390190	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Alan Mandelberg?

The National Provider Identifier (NPI) for Alan Mandelberg is 1659422582, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alan Mandelberg practice?

The practice location on file with NPPES is in North Hollywood, CA. 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 2008-04-22.