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HEATHER SIENKOWSKI RDH
NPI 1538832282
Dental Hygienist in Great Falls, MT

Active since July 28, 2021
202 2ND AVE S STE 203, GREAT FALLS, MT 59405(406) 791-9267(406) 791-9277 Get Directions Write a Review

NPPES record last updated: October 1, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: May 10, 2024, Oct 30, 2023, Jul 28, 2021 (3 updates tracked since 2021).

About Heather Sienkowski Rdh NPPES

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

HEATHER SIENKOWSKI RDH (NPI 1538832282) is an individual dental hygienist in Great Falls, Montana, licensed in Montana (DEN-RDH-LIC-13510) and active in the NPI registry since July 2021.

NPPES Registry Identity

NPI1538832282
Entity TypeIndividualFemale
Primary Taxonomy124Q00000X
Provider Legal NameHEATHER SIENKOWSKICredential: RDH
Location Address202 2ND AVE S STE 203Great Falls, MT 59405-1831
Mailing Address601 1st Ave NGreat Falls, MT 59401-2510 · (406) 454-6373 · Fax (406) 791-9277
Phone(406) 791-9267
Fax(406) 791-9277
Sole ProprietorNo
Enumeration DateJuly 28, 2021
Last NPPES UpdateOctober 1, 20253 updates tracked since enumeration
NPPES CertifiedOctober 1, 2025
✔ NPI 1538832282 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDental HygienistDental Providers
Taxonomy Code124Q00000X
License✔ Licensed in MT · DEN-RDH-LIC-13510
Definition
An individual who has completed an accredited dental hygiene education program, and an individual who has been licensed by a state board of dental examiners to provide preventive care services under the supervision of a dentist. Functions that may be legally delegated to the dental hygienist vary based on the needs of the dentist, the educational preparation of the dental hygienist and state dental practice acts and regulations, but always include, at a minimum, scaling and polishing the teeth. To avoid misleading the public, no occupational title other than dental hygienist should be used to describe this dental auxiliary.
202 2ND AVE S STE 203, Great Falls, MT 59405
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Other Providers at the Same Location NPPES 6

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

DR. CHRIS ALLAN BLIXRUD DDS
Dentist
202 2ND AVE S STE 203
GREAT FALLS, MT 59405
Cascade County (406) 791-9267
TESSA SIMPSON RDH
Dental Hygienist
202 2ND AVE S STE 203
GREAT FALLS, MT 59405
Cascade County (406) 791-9267
DEANNA MARIE GOSS RDH LAP
Dental Hygienist
202 2ND AVE S STE 203
GREAT FALLS, MT 59405
Cascade County (406) 791-9267
SARAPOORNIMA SENDHUR DMD
Dentist (General Practice)
202 2ND AVE S STE 203
GREAT FALLS, MT 59405
Cascade County (406) 791-9267
REEGAN MARIE DEBRUYCKER DDS
Dentist (General Practice)
202 2ND AVE S STE 203
GREAT FALLS, MT 59405
Cascade County (406) 791-9267
DR. KENNETH MICHAEL GREBLIUNAS D.D.S.
Dentist (General Practice)
202 2ND AVE S STE 203
GREAT FALLS, MT 59405
Cascade County (406) 791-9267

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 Heather Sienkowski's NPI number?

The NPI number for Heather Sienkowski is 1538832282. It was assigned to this individual provider in the NPPES registry on July 28, 2021.

Where is Heather Sienkowski located?

Heather Sienkowski practices at 202 2nd Ave S Ste 203, Great Falls, MT 59405. The listed phone number is (406) 791-9267.

What is Heather Sienkowski's specialty?

The primary specialty registered for this NPI is Dental Hygienist with taxonomy code 124Q00000X.

When was this NPI record last updated?

The NPPES record for Heather Sienkowski was last updated on October 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.