Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ronald Michael Singer, O.D.
Optometrist in Canoga Park, CA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1497891170
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Registry record
Entity type Individual (Type 1)
Name Dr. Ronald Michael Singer
Credential O.D.
Sex Male
Practice address 22330 Sherman Way, Suite #15, Canoga Park, CA, 91303
Phone (818) 992-4400
Fax (818) 587-2433
Enumeration date Jan 29, 2007
Last updated in NPPES Jul 14, 2023
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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.
Frequently asked questions
What specialty is Ronald Singer?
Ronald Singer is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-14.