Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Wendy Griswold, APRN

Family Nurse Practitioner in Portland, CT · enumerated 2009 · practices at Mhs Primary Care.

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

National Provider Identifier

1639406184

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Registry record

Entity type Individual (Type 1)

Name Mrs. Wendy Griswold

Credential APRN

Sex Female

Practice address 270 Main St, Portland, CT, 06480

Phone (860) 342-3392

Fax (860) 358-8658

Enumeration date Nov 4, 2009

Last updated in NPPES Apr 12, 2017

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 004197 (CT) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN credential

Other identifiers

Identifier	Type	State	Issuer
008014148	Medicaid	CT	-

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

How do I verify Wendy Griswold's NPI record?

Cross-check NPI 1639406184 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639406184 active?

Yes, as of the latest NPPES snapshot, NPI 1639406184 is active (record last updated 2017-04-12).

Other providers at this practice address

Browse all →

George Rosenfeld Family Medicine Physician · Portland, CT NPI 1255369419 Wendy Tagan Conroy Family Nurse Practitioner · Portland, CT NPI 1821119843 Mhs Primary Care Family Medicine Physician · Portland, CT NPI 1710104625 Israel Cordero Family Medicine Physician · Portland, CT NPI 1124281613 Jessica Terrone Roehr Family Medicine Physician · Portland, CT NPI 1710206339 Matthew Nichols Family Medicine Physician · Portland, CT NPI 1093028052 Justin Caskey Family Medicine Physician · Portland, CT NPI 1346536398 Carly Odesina Family Nurse Practitioner · Portland, CT NPI 1548610959

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-04-12.