Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Donald R. Welsh, Jr DMD, PLLC

Organization Dentist · NPI 1417135112

Donald R. Welsh, Jr DMD, PLLC is a Dentist in Portsmouth, New Hampshire. Licensed in New Hampshire. Registered with an NPI since 2008.

Licensed in
NH
In the registry since
2008
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

320 Union St
Portsmouth, NH 03801-5052
Phone: (603) 436-2144
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dentist (primary) Taxonomy 122300000X · Licence 2064 (NH)

Record details

NPI number1417135112
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Donald Welsh — Dentist · (603) 436-2144
NPI enumeratedFebruary 5, 2008
Last updated in NPPESFebruary 5, 2008
Mailing address320 Union St, Portsmouth, NH 03801-5052

Other providers in Portsmouth