Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Reuben Levi Alexander, O.D.

Optometrist in Chestnut Hill, MA · enumerated 2012.

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

National Provider Identifier

1790039030

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Registry record

Entity type Individual (Type 1)

Name Dr. Reuben Levi Alexander

Credential O.D.

Sex Male

Practice address 673 Vfw Pkwy, Chestnut Hill, MA, 02467

Phone (617) 522-3443

Fax (617) 522-3440

Enumeration date Nov 8, 2012

Last updated in NPPES Jul 7, 2026

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 003452 (CT) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License OPC-6804 (FL) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License RT011368-01 (NY) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License OPT8244 (MA) Primary

152W00000X Optometrist Eye and Vision Services Providers · License OEG002632 (PA) Secondary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Reuben Alexander?

The National Provider Identifier (NPI) for Reuben Alexander is 1790039030, a Type 1 (individual) record in the CMS NPPES registry.

Where does Reuben Alexander practice?

The practice location on file with NPPES is in Chestnut Hill, MA. Providers can have multiple locations; NPPES lists the primary practice address.

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