Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harold Chisholm, OPTICIAN

Optician in Boston, MA · enumerated 2006.

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

National Provider Identifier

1902966757

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Registry record

Entity type Individual (Type 1)

Name Harold Chisholm

Credential OPTICIAN

Sex Male

Practice address 243 Charles Street, Boston, MA, 02114

Phone (617) 573-4296

Enumeration date Dec 11, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License 1215 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
1215	Other	MA	RDO LICENSE

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 NPI 1902966757 active?

Yes, as of the latest NPPES snapshot, NPI 1902966757 is active (record last updated 2007-07-08).

How do I verify Harold Chisholm's NPI record?

Cross-check NPI 1902966757 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.