NPI registry status
Active
2026 NPPES data Nurse Practitioner NPI 1649022872 NP-C
Verify on CMS → Amy Vander Giessen, NP-C
Nurse Practitioner in Helena, 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 89,808 in 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
98
Medicare Part D claims · 41 beneficiaries · Nurse Practitioner avg: 1K
What the federal data shows
Amy Vander Giessen, NP-C filed 98 Medicare Part D claims in 2024 as a Nurse Practitioner in Helena, Montana.
- 98
- 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 Amy Vander Giessen, NP-C
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1649022872), first enumerated 04/02/2024.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 98 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1649022872 · Nurse Practitioner
NPI-10 · ENUM-NEW · TAX-MEGA · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1649022872
- ENUM-NEW 2024
- TAX-MEGA 90K Nurse Practitioner
- RX-TRACE 98
- BOOK-THIN 297 in Montana
- PHOTO-ENUM Shaughnessy Taylor,… · 2024
Amy Vander Giessen, NP-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
98 ≥ 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 Amy Vander Giessen, NP-C?
Quality data not reportedPrimary specialty
Nurse Practitioner
Medicare Part D claims
98 91% vs specialty avg
Specialty distribution in Montana
How 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 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 | 1649022872 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | NP-C |
| Gender | Female |
| NPI Issued | 04/02/2024 |
Hospital and facility affiliations
Facilities where Amy Vander Giessen, NP-C bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
St Peters Health
★★★☆☆ 3/5
Helena, MT
Acute Care Hospitals
CMS CCN: 270003
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
98
Total Claims
$1K
Total Drug Cost
41
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 100.333
- Total Day Supply
- 1,403
- Generic Drug Cost
- $748
- Opioid Claims
- 45 (45.9% rate)
- Antibiotic Claims
- 12
Patient Demographics
- Average Patient Age
- 74.6 years
- Avg HCC Risk Score
- 0.80
- Gender Split
- 68% female / 32% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Amy Vander Giessen, NP-C prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
26 claims
- Celecoxib
Celecoxib
20 claims
- Tramadol Hcl
Tramadol Hcl
18 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 26 |
| Celecoxib | 20 |
| Tramadol Hcl | 18 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How Amy Vander Giessen, NP-C fits within the Nurse Practitioner landscape nationally.
89,808
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,144
Avg Claims per Provider
Amy Vander Giessen, NP-C's 98 claims are below the specialty average of 1,144.
Nationwide Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Vander Giessen, both outside Montana so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2024)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Nurse Practitioner Providers in Montana
Other clinicians with the same primary specialty enrolled in Montana, drawn from the same CMS NPPES roster as Vander Giessen.
One of 297 Nurse Practitioner providers enrolled in Montana, 5 are shown here.
Melissa Abraham
NP-C
Helena, MT
Dr. Amanda Abrams-Buerkley
DNP
Havre, MT
Kara Addison
DNP-C
Helena, MT
Marni Allen
NP
Kalispell, MT
Susan Anderson
APRM
Fort Harrison, MT
Compare Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Amy Vander Giessen, NP-C's specialty? ▼
Amy Vander Giessen, NP-C specializes in Nurse Practitioner and practices in Helena, Montana. Credentials: NP-C.
How much does Amy Vander Giessen, NP-C prescribe under Medicare Part D? ▼
In 2024, Amy Vander Giessen, NP-C wrote 98 Medicare Part D claims totaling $1K in drug costs for 41 beneficiaries.
Where is Amy Vander Giessen, NP-C located? ▼
Amy Vander Giessen, NP-C is located at 2550 E BROADWAY ST, Helena, MT, 59601. Phone: (406) 447-4180.
What is Amy Vander Giessen, NP-C's NPI number? ▼
Amy Vander Giessen, NP-C's National Provider Identifier (NPI) is 1649022872, issued on 04/02/2024.
Does Amy Vander Giessen, NP-C prescribe opioids? ▼
Yes, Amy Vander Giessen, NP-C had 45 opioid claims in 2024 with an opioid prescribing rate of 45.9%.
How many Nurse Practitioner providers are there in the US? ▼
There are 89,808 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,144 Medicare Part D claims per year.
What drugs does Amy Vander Giessen, NP-C prescribe most often? ▼
Based on 2024 Medicare Part D data, Amy Vander Giessen, NP-C's most frequently prescribed drugs include Oxycodone Hcl, Celecoxib, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Amy Vander Giessen, NP-C accept Medicare? ▼
Amy Vander Giessen, NP-C appears in CMS Medicare data with 98 Part D claims and 41 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Amy Vander Giessen, NP-C's credentials? ▼
Amy Vander Giessen, NP-C's NPI is 1649022872 with credentials NP-C. 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.