NPI registry status
Active
2026 NPPES data Occupational Health Nurse Practitioner NPI 1942210737 FNP
Verify on CMS → Mary Siewert, FNP
Occupational Health Nurse Practitioner in Bozeman, Montana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 371 in Occupational Health Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
16
Medicare Part D claims · Occupational Health Nurse Practitioner avg: 922
What the federal data shows
Mary Siewert, FNP filed 16 Medicare Part D claims in 2024 as an Occupational Health Nurse Practitioner in Bozeman, Montana.
- 16
- Part D claims, 2024
- ≥0th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Mary Siewert, FNP
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1942210737), first enumerated 08/08/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 16 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1942210737 · Occupational Health Nurse Practitioner
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1942210737
- ENUM-LEGACY 2006
- TAX-TRACE 371
- RX-TRACE 16
- BOOK-THIN 2 in Montana
- PHOTO-ENUM Cathleen Platt, APRN · 2006
Mary Siewert, FNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
16 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Mary Siewert, FNP?
Quality data not reportedPrimary specialty
Occupational Health Nurse Practitioner
Medicare Part D claims
16 98% vs specialty avg
Specialty distribution in Montana
How Occupational Health Nurse Practitioner compares to other specialties among Montana providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Occupational Health Nurse Practitioner. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1942210737 |
|---|---|
| Specialty | Occupational Health Nurse Practitioner |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 08/08/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
16
Total Claims
$201
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 16.2
- Total Day Supply
- 423
- Generic Drug Cost
- $188
Patient Demographics
- Average Patient Age
- 80.0 years
- Avg HCC Risk Score
- 0.51
More Occupational Health Nurse Practitioner in MT →
All providers in Montana →
Compare specialties →
Occupational Health Nurse Practitioner Overview
How Mary Siewert, FNP fits within the Occupational Health Nurse Practitioner landscape nationally.
371
Occupational Health Nurse Practitioner Providers in US
47
States with Occupational Health Nurse Practitioner
922
Avg Claims per Provider
Mary Siewert, FNP's 16 claims are below the specialty average of 922.
Nationwide Occupational Health Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Siewert, both outside Montana so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Occupational Health Nurse Practitioner Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Siewert.
Compare Occupational Health Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mary Siewert, FNP's specialty? ▼
Mary Siewert, FNP specializes in Occupational Health Nurse Practitioner and practices in Bozeman, Montana. Credentials: FNP.
How much does Mary Siewert, FNP prescribe under Medicare Part D? ▼
In 2024, Mary Siewert, FNP wrote 16 Medicare Part D claims totaling $201 in drug costs for N/A beneficiaries.
Where is Mary Siewert, FNP located? ▼
Mary Siewert, FNP is located at 915 HIGHLAND BLVD, Bozeman, MT, 59715. Phone: (406) 585-5000.
What is Mary Siewert, FNP's NPI number? ▼
Mary Siewert, FNP's National Provider Identifier (NPI) is 1942210737, issued on 08/08/2006.
How many Occupational Health Nurse Practitioner providers are there in the US? ▼
There are 371 Occupational Health Nurse Practitioner providers across 47 states in the US. The average Occupational Health Nurse Practitioner provider writes 922 Medicare Part D claims per year.
Does Mary Siewert, FNP accept Medicare? ▼
Mary Siewert, FNP appears in CMS Medicare data with 16 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Siewert, FNP's credentials? ▼
Mary Siewert, FNP's NPI is 1942210737 with credentials FNP. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.