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

Ronald V. Black, O.D.

Optometrist in Glendale, CA · enumerated 2006.

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

National Provider Identifier

1821032442

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Registry record

Entity type Individual (Type 1)

Name Ronald V. Black

Credential O.D.

Sex Male

Practice address Glendale, CA, 91203

Phone (818) 240-0890

Fax (818) 246-2540

Enumeration date Jun 15, 2006

Last updated in NPPES Sep 21, 2009

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OPT9869T (CA) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
1306035118	Medicaid	CA	-
1821032442	Other	CA	NPI
OPT9869T	Other	CA	OPTOMETRY LICENSE
6191070001	Other	CA	DME MACS PTAN

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

How do I verify Ronald Black's NPI record?

Cross-check NPI 1821032442 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1821032442 active?

Yes, as of the latest NPPES snapshot, NPI 1821032442 is active (record last updated 2009-09-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-09-21.