Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Barry Charles Gendron, DO

Pain Medicine (Physical Medicine & Rehabilitation) Physician in Portsmouth, NH · enumerated 2006.

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

National Provider Identifier

1558441949

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Barry Charles Gendron

Credential DO

Sex Male

Practice address 875 Greenland Rd, Suite C4, Portsmouth, NH, 03801

Phone (603) 431-5529

Fax (603) 436-6603

Enumeration date Oct 17, 2006

Last updated in NPPES Mar 7, 2024

Taxonomy & licenses

2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License 8932 (NH) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
3074946	Medicaid	NH	-

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

Is NPI 1558441949 active?

Yes, as of the latest NPPES snapshot, NPI 1558441949 is active (record last updated 2024-03-07).

How do I verify Barry Gendron's NPI record?

Cross-check NPI 1558441949 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 →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-07.