Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Louis Mark Trapp III, DDS

Individual provider Dentist · NPI 1972395879

Dr. Louis Mark Trapp III, DDS is a Dentist in Fitchburg, Massachusetts. Practices as a sole proprietor and works from 2 locations. Licensed in Massachusetts and South Carolina.

Licensed in
MA, SC
In the registry since
2025
Specialties on file
4
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

See every abbreviation used in this directory →

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Practice location Address checks out

326 Nichols Rd
Fitchburg, MA 01420-1914
Phone: (978) 878-8100
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Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 631 N Church St, Spartanburg, SC 29303-3046 — (864) 308-1355

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence DN10001453 (MA)
Dentist Taxonomy 122300000X · Licence 11074 (SC)
Public Health Dentistry Taxonomy 1223D0001X · Licence 11074 (SC)
General Practice Dentistry Taxonomy 1223G0001X · Licence 11074 (SC)

Record details

NPI number1972395879
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorYes
NPI enumeratedMay 19, 2025
Last updated in NPPESOctober 5, 2026
Certification dateOctober 5, 2026

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Education $34 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

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