Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mervin W Stoltzfus

Optometrist in Christiana, PA · enumerated 2006.

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

National Provider Identifier

1669497889

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Registry record

Entity type Individual (Type 1)

Name Dr. Mervin W Stoltzfus

Sex Male

Practice address Christiana, PA, 17509

Phone (610) 593-6670

Enumeration date Jul 12, 2006

Last updated in NPPES Mar 5, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OEG001396 (PA) Primary

Other identifiers

Identifier	Type	State	Issuer
0546535	Medicaid	PA	-

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 1669497889 active?

Yes, as of the latest NPPES snapshot, NPI 1669497889 is active (record last updated 2008-03-05).

How do I verify Mervin Stoltzfus's NPI record?

Cross-check NPI 1669497889 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Mervin W Stoltzfus Od Optometrist · Christiana, PA NPI 1720020019 Christiana Eyecare LLC Optometrist · Christiana, PA NPI 1467294298

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-05.