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

Donald R. Welsh, Jr DMD, PLLC

Organization Dentist · NPI 1417135112

Donald R. Welsh, Jr DMD, PLLC provides Dentist services 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 Not confirmed with CMS for 18 years — call before visiting
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