Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Lynn Gregory, OD FCOVD

Optometrist in Monticello, MN · enumerated 2006 · practices at Elaine Happ Od PA.

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

National Provider Identifier

1477626661

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Registry record

Entity type Individual (Type 1)

Name Mary Lynn Gregory

Credential OD FCOVD

Sex Female

Practice address 560 Cedar Street, Monticello, MN, 55362

Phone (763) 271-2020

Enumeration date Nov 16, 2006

Last updated in NPPES Dec 27, 2014

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 2734 (MN) Primary

Other identifiers

Identifier	Type	State	Issuer
219J5GR	Other	MN	BCBS
127621	Other	MN	U CARE
2201727	Other	MN	MEDICA
2201727	Other	MN	SELECT CARE
P00236593	Other	MN	MEDICARE RAILROAD
030242200	Medicaid	MN	-
HP29102	Other	MN	HEALTH PARTNERS

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 1477626661 active?

Yes, as of the latest NPPES snapshot, NPI 1477626661 is active (record last updated 2014-12-27).

How do I verify Mary Gregory's NPI record?

Cross-check NPI 1477626661 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

Browse all →

Elaine Happ Optometrist · Monticello, MN NPI 1689746141 Elaine Happ Od PA Optometrist · Monticello, MN NPI 1033281597

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-12-27.