2026 NPPES data Registered Nurse NPI 1538631940 APNP
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Sara Marshall, APNP

Registered Nurse in Monona, Wisconsin. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 160 beneficiaries · Registered Nurse avg: 1K

What the federal data shows

Sara Marshall, APNP filed 2,308 Medicare Part D claims in 2023 as a Registered Nurse in Monona, Wisconsin.

2K
Part D claims, 2023

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.

Sara Marshall, APNP's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

2,308 Top 14% higher than 86% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about Sara Marshall, APNP?

Quality data not reported

NPI registry status

Active

Issued 12/24/2018

NPI 1538631940

Primary specialty

Registered Nurse

High-volume

175,652 US NPIs in this specialty

Medicare Part D claims

2,308 131% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

Specialty distribution in Wisconsin

How Registered Nurse compares to other specialties among Wisconsin providers

Wisconsin providers

Registered Nurse share within Wisconsin

1. Registered Nurse42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Registered Nurse share within Wisconsin

Specialty board-certification context

Estimated specialty board-certified rate — Registered Nurse (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Registered Nurse ABMS/AOA estimate

Est. board-certified rate (Registered Nurse) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Registered Nurse) — ABMS / AOA estimate

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).

Sara Marshall, APNP appears in the CMS NPPES registry as a Registered Nurse provider holding APNP credentials at 6408 COPPS AVE, Monona, WI, 53716, with a listed phone of (608) 417-3000. NPI 1538631940 was issued on 12/24/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Marshall most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 2,308 prescription claims written by this provider, covering 160 Medicare beneficiaries and totaling roughly $154K in drug spend, with an opioid prescribing rate of 2.3%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Registered Nurse is a high-volume specialty nationwide, with 175,652 enrolled providers across 56 states and an average of 1,000 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

6408 COPPS AVE
Monona, WI 53716

Provider Details

NPI 1538631940
Specialty Registered Nurse
Credentials APNP
Gender Female
NPI Issued 12/24/2018

Hospital and facility affiliations

Facilities where Sara Marshall, APNP 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.

Meriter Hospital Inc
Monona, WI

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 2023.

2,308
Total Claims
$154K
Total Drug Cost
160
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,082
Total Day Supply
116,400
Generic Drug Cost
$35K
Opioid Claims
54 (2.3% rate)
Antibiotic Claims
32

Patient Demographics

Average Patient Age
68.3 years
Avg HCC Risk Score
1.29
Gender Split
71% female / 29% male
Age Distribution
<65: 34, 65-74: 91, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Sara Marshall, APNP prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
133
Levothyroxine Sodium
111
Gabapentin
101
Duloxetine Hcl
87
Omeprazole
75
Lisinopril
68
Losartan Potassium
60
Metoprolol Succinate
60
Metformin Hcl Er
Metformin Hcl
56
Amlodipine Besylate
55

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Registered Nurse Overview

How Sara Marshall, APNP fits within the Registered Nurse landscape nationally.

175,652
Registered Nurse Providers in US
56
States with Registered Nurse
1,000
Avg Claims per Provider

Sara Marshall, APNP's 2,308 claims are above the specialty average of 1,000.

Nearby Registered Nurse Providers in Wisconsin

Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Marshall.

Compare Registered Nurse nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Wisconsin medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Registered Nurse peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Sara Marshall, APNP's specialty?
Sara Marshall, APNP specializes in Registered Nurse and practices in Monona, Wisconsin. Credentials: APNP.
How much does Sara Marshall, APNP prescribe under Medicare Part D?
In 2023, Sara Marshall, APNP wrote 2,308 Medicare Part D claims totaling $154K in drug costs for 160 beneficiaries.
Where is Sara Marshall, APNP located?
Sara Marshall, APNP is located at 6408 COPPS AVE, Monona, WI, 53716. Phone: (608) 417-3000.
What is Sara Marshall, APNP's NPI number?
Sara Marshall, APNP's National Provider Identifier (NPI) is 1538631940, issued on 12/24/2018.
Does Sara Marshall, APNP prescribe opioids?
Yes, Sara Marshall, APNP had 54 opioid claims in 2023 with an opioid prescribing rate of 2.3%.
How many Registered Nurse providers are there in the US?
There are 175,652 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,000 Medicare Part D claims per year.
What drugs does Sara Marshall, APNP prescribe most often?
Based on 2023 Medicare Part D data, Sara Marshall, APNP's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sara Marshall, APNP accept Medicare?
Sara Marshall, APNP appears in CMS Medicare data with 2,308 Part D claims and 160 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sara Marshall, APNP's credentials?
Sara Marshall, APNP's NPI is 1538631940 with credentials APNP. 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

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 (2023). 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 April 2026 (NPPES) / 2023 (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