Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert James Blumthal, O.D.

Optometrist in Springfield, IL · enumerated 2005.

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

National Provider Identifier

1578568077

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert James Blumthal

Credential O.D.

Sex Male

Practice address 2020 W Iles Ave, Springfield, IL, 62704

Phone (217) 698-3030

Fax (217) 698-3068

Enumeration date Jun 20, 2005

Last updated in NPPES Feb 8, 2017

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 046007512 (IL) Primary

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 046007512 (IL) Secondary

152WL0500X Low Vision Rehabilitation Optometrist Eye and Vision Services Providers · License 046007512 (IL) Secondary

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
046007512	Medicaid	IL	-
410033847	Other	IL	RAILROAD MEDICARE

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

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.

What specialty is Robert Blumthal?

Robert Blumthal 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-08.