2026 NPPES data Family Nurse Practitioner NPI 1881221091 FNP-C
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CATHY LEWIS, FNP-C

Family Nurse Practitioner in IDAHO FALLS, Idaho. 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
139
Medicare Part D claims · 58 beneficiaries · Family Nurse Practitioner avg: 1K

What the federal data shows

CATHY LEWIS, FNP-C filed 139 Medicare Part D claims in 2023 as a Family Nurse Practitioner in IDAHO FALLS, Idaho.

139
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.

CATHY LEWIS, FNP-C's Medicare Part D volume vs every U.S. prescriber

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

139 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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 CATHY LEWIS, FNP-C?

Quality data not reported

NPI registry status

Active

Issued 03/26/2020

NPI 1881221091

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

139 89% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Idaho

How Family Nurse Practitioner compares to other specialties among Idaho providers

Idaho providers

Family Nurse Practitioner share within Idaho

1. Family Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Nurse Practitioner share within Idaho

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Family Nurse Practitioner) — 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).

CATHY LEWIS, FNP-C appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP-C credentials at 3100 CHANNING WAY, IDAHO FALLS, ID, 83404, with a listed phone of (208) 227-2575. NPI 1881221091 was issued on 03/26/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LEWIS 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 139 prescription claims written by this provider, covering 58 Medicare beneficiaries and totaling roughly $4K in drug spend, with an opioid prescribing rate of 13.7%. 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.

Family Nurse Practitioner is a high-volume specialty nationwide, with 209,817 enrolled providers across 56 states and an average of 1,222 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

3100 CHANNING WAY
IDAHO FALLS, ID 83404

Provider Details

NPI 1881221091
Specialty Family Nurse Practitioner
Credentials FNP-C
Gender Female
NPI Issued 03/26/2020

Hospital and facility affiliations

Facilities where CATHY LEWIS, FNP-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.

UTAH REGIONAL HOSPITALISTS LLC
IDAHO FALLS, ID

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.

139
Total Claims
$4K
Total Drug Cost
58
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
145
Total Day Supply
2,760
Generic Drug Cost
$2K
Opioid Claims
19 (13.7% rate)
Antibiotic Claims
13

Patient Demographics

Average Patient Age
74.9 years
Avg HCC Risk Score
1.66
Gender Split
48% female / 52% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
13
Atorvastatin Calcium
11

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

Family Nurse Practitioner Overview

How CATHY LEWIS, FNP-C fits within the Family Nurse Practitioner landscape nationally.

209,817
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider

CATHY LEWIS, FNP-C's 139 claims are below the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Idaho

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

Compare Family Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is CATHY LEWIS, FNP-C's specialty?
CATHY LEWIS, FNP-C specializes in Family Nurse Practitioner and practices in IDAHO FALLS, Idaho. Credentials: FNP-C.
How much does CATHY LEWIS, FNP-C prescribe under Medicare Part D?
In 2023, CATHY LEWIS, FNP-C wrote 139 Medicare Part D claims totaling $4K in drug costs for 58 beneficiaries.
Where is CATHY LEWIS, FNP-C located?
CATHY LEWIS, FNP-C is located at 3100 CHANNING WAY, IDAHO FALLS, ID, 83404. Phone: (208) 227-2575.
What is CATHY LEWIS, FNP-C's NPI number?
CATHY LEWIS, FNP-C's National Provider Identifier (NPI) is 1881221091, issued on 03/26/2020.
Does CATHY LEWIS, FNP-C prescribe opioids?
Yes, CATHY LEWIS, FNP-C had 19 opioid claims in 2023 with an opioid prescribing rate of 13.7%.
How many Family Nurse Practitioner providers are there in the US?
There are 209,817 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does CATHY LEWIS, FNP-C prescribe most often?
Based on 2023 Medicare Part D data, CATHY LEWIS, FNP-C's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CATHY LEWIS, FNP-C accept Medicare?
CATHY LEWIS, FNP-C appears in CMS Medicare data with 139 Part D claims and 58 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CATHY LEWIS, FNP-C's credentials?
CATHY LEWIS, FNP-C's NPI is 1881221091 with credentials FNP-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

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