NPPES file of Aug 9, 2026

Holly Sienkiewicz, RN

School Registered Nurse · Livingston, MT

Holly Sienkiewicz, RN is a school registered nurse with a practice address in Livingston, Montana, and NPI 1578108304, issued on Nov 15, 2019. Check the license (Montana 73401, as entered in NPPES) with the Montana board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1578108304
Name
Holly Sienkiewicz
Credential
RN
Primary taxonomy
School Registered Nurse 163WS0200X
License number
73401 MT
Self-reported in NPPES; status is on the state search
Practice location
102 View Vista Dr, Livingston, MT 59047
Phone
(406) 222-0448
Enumerated
Nov 15, 2019
Record last updated
Nov 15, 2019 (not updated in 7 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Holly Sienkiewicz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Montana board licenses this profession
    Search for license 73401    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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School Registered Nurse providers in Montana

There are 2 school registered nurse records in Montana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2 in Montana → Every provider in Livingston →

Other school registered nurse records in Montana

  1. Cynthia Freeman, R.N.Marion, MT1477859932

Common questions

What is Holly Sienkiewicz, RN's NPI number?

Holly Sienkiewicz, RN's National Provider Identifier (NPI) is 1578108304, issued on Nov 15, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Holly Sienkiewicz, RN located?

The NPPES record lists a practice address at 102 View Vista Dr, Livingston, MT, 59047. Phone: (406) 222-0448. Providers update this record themselves, so call before visiting.

How can I verify Holly Sienkiewicz, RN's license?

NPPES lists Montana license number 73401, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.