Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Vonnahme & Associates LLC PC

Optometrist in Holyoke, MA · enumerated 2006 · authorized official Hans Vonnahme, Owner.

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

National Provider Identifier

1841359908

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Registry record

Entity type Organization (Type 2)

Legal business name Vonnahme & Associates LLC PC

Practice address 98 Lower Westfield Rd, Holyoke, MA, 01040

Phone (413) 552-3937

Fax (888) 935-4545

Enumeration date Dec 6, 2006

Last updated in NPPES May 24, 2011

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary

Authorized official

Name Hans Vonnahme

Title Owner

Phone (413) 552-3937

Other identifiers

Identifier	Type	State	Issuer
W20404	Other	-	BCBS

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

Where is Vonnahme & Associates LLC PC located?

The practice location on file with NPPES is in Holyoke, MA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-05-24. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-05-24.