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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. LOUIS MARK TRAPP III DDS
NPI 1972395879
Dentist - General Practice in Fitchburg, MA

Active since May 19, 2025PECOS Enrolled
326 NICHOLS RD, FITCHBURG, MA 01420(978) 878-8100 Get Directions Write a Review

NPPES record last updated: October 5, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 5, 2026, Sep 21, 2026, May 19, 2025 (3 updates tracked since 2025).

About Dr. Louis Mark Trapp Iii Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LOUIS MARK TRAPP III DDS (NPI 1972395879) is an individual general practice provider in Fitchburg, Massachusetts, licensed in Massachusetts (DN10001453) and active in the NPI registry since May 2025. He is enrolled in Medicare PECOS and maintains a secondary practice location in Spartanburg.

NPPES Registry Identity

NPI1972395879
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameDR. LOUIS MARK TRAPP IIICredential: DDS
Location Address326 NICHOLS RDFitchburg, MA 01420-1914
Mailing Address9 Baldwin CtHarvard, MA 01451-1516 · (803) 351-1592
Phone(978) 878-8100
Sole ProprietorYes
Enumeration DateMay 19, 2025
Last NPPES UpdateOctober 5, 20263 updates tracked since enumeration
NPPES CertifiedOctober 5, 2026
✔ NPI 1972395879 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
Licenses✔ Licensed in MA · DN10001453✔ Licensed in SC · 11074
Definition
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
Also ListedDentistTaxonomy 122300000X · License 11074 (SC)
Also ListedDentist · Dental Public HealthTaxonomy 1223D0001X · License 11074 (SC)
326 NICHOLS RD, Fitchburg, MA 01420
Open in Google Maps ↗

Secondary Practice Location 1

Location 1631 N Church StSpartanburg, SC 29303-3046 · Phone (864) 308-1355

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Louis Mark Trapp Iii Dds is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01420 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$73.22 typical visit price
range $19.11 – $144.84
Typical copayment $18.30 (range $4.77 – $36.21)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GEORGE CHUDOLIJ MD
Anesthesiology
326 NICHOLS RD, SUITE 16
FITCHBURG, MA 01420
Worcester County (978) 665-5800
SHAHIDA FAREED
Psychologist (Clinical)
326 NICHOLS RD
FITCHBURG, MA 01420
Worcester County (978) 878-8399
DANIEL O'BRIEN M.D.
Anesthesiology
326 NICHOLS RD, SUITE 16
FITCHBURG, MA 01420
Worcester County (978) 665-5800
ISABEL LEGARDA
Anesthesiology
326 NICHOLS RD, SUITE 16
FITCHBURG, MA 01420
Worcester County (978) 665-5800
ELIZABETH LOVECE
Counselor (Mental Health)
326 NICHOLS RD
FITCHBURG, MA 01420
Worcester County (978) 878-8100
MICHELE DENISE COLLINS RN
Registered Nurse (Community Health)
326 NICHOLS RD
FITCHBURG, MA 01420
Worcester County (978) 878-8100
DR. MORGAN RITA NELSON DO
Student in an Organized Health Care Education/Training Program
326 NICHOLS RD
FITCHBURG, MA 01420
Worcester County (978) 343-5270
AMELIA BAIRD
Student in an Organized Health Care Education/Training Program
326 NICHOLS RD
FITCHBURG, MA 01420
Worcester County (978) 878-8100

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Louis Trapp's NPI number?

The NPI number for Louis Trapp is 1972395879. It was assigned to this individual provider in the NPPES registry on May 19, 2025.

Where is Louis Trapp located?

Louis Trapp practices at 326 Nichols Rd, Fitchburg, MA 01420. The listed phone number is (978) 878-8100.

What is Louis Trapp's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Is Louis Trapp enrolled in Medicare?

Yes. Louis Trapp is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Louis Trapp was last updated on October 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.