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

Mr. Donald Henry Grenier Jr., MSN, PMHNP

Psychiatric/Mental Health Nurse Practitioner in Manchester, VT · enumerated 2023 · practices at Taconic Integrative Psychiatric Services, Pllc.

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

National Provider Identifier

1932980133

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Registry record

Entity type Individual (Type 1)
Name Mr. Donald Henry Grenier Jr.
Credential MSN, PMHNP
Sex Male
Practice address Manchester, VT, 05254
Phone (802) 768-9136
Enumeration date Oct 12, 2023
Last updated in NPPES Oct 12, 2023

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

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 101.0136632 (VT) Primary

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 1932980133 active?
Yes, as of the latest NPPES snapshot, NPI 1932980133 is active (record last updated 2023-10-12).
How do I verify Donald Grenier's NPI record?
Cross-check NPI 1932980133 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 2023-10-12.