2026 NPPES data Family Nurse Practitioner NPI 1881292043 FNP-BC
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ERIN CHRISTIANSEN-LEISY, FNP-BC

Family Nurse Practitioner in WINDSOR, Colorado. 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 · 180 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ERIN CHRISTIANSEN-LEISY, FNP-BC filed 1,589 Medicare Part D claims in 2023 as a Family Nurse Practitioner in WINDSOR, Colorado, prescribing 91% generic.

2K
Part D claims, 2023
91%
generic prescribing

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.

ERIN CHRISTIANSEN-LEISY, FNP-BC's Medicare Part D volume vs every U.S. prescriber

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

1,589 Top 19% higher than 81% 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%). This entry sits in this band. 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 ERIN CHRISTIANSEN-LEISY, FNP-BC?

Quality data not reported

NPI registry status

Active

Issued 10/10/2020

NPI 1881292043

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

1,589 30% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Colorado

How Family Nurse Practitioner compares to other specialties among Colorado providers

Colorado providers

Family Nurse Practitioner share within Colorado

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

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).

ERIN CHRISTIANSEN-LEISY, FNP-BC appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP-BC credentials at 687 GYRFALCON CT UNIT B, WINDSOR, CO, 80550, with a listed phone of (970) 632-9661. NPI 1881292043 was issued on 10/10/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHRISTIANSEN-LEISY 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 1,589 prescription claims written by this provider, covering 180 Medicare beneficiaries and totaling roughly $133K in drug spend, split 9% brand-name and 91% generic by claim count, with an opioid prescribing rate of 48.7%. 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

687 GYRFALCON CT UNIT B
WINDSOR, CO 80550

Provider Details

NPI 1881292043
Specialty Family Nurse Practitioner
Credentials FNP-BC
Gender Female
NPI Issued 10/10/2020

Hospital and facility affiliations

Facilities where ERIN CHRISTIANSEN-LEISY, FNP-BC 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.

MARK MCDONALD P.T,P.C.
STERLING, CO

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Generic-heavy

ERIN CHRISTIANSEN-LEISY, FNP-BC — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 1,589 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,589
Total Claims
$133K
Total Drug Cost
180
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,727
Total Day Supply
49,434
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$76K
Generic Drug Cost
$57K
Opioid Claims
774 (48.7% rate)

Patient Demographics

Average Patient Age
66.0 years
Avg HCC Risk Score
1.86
Gender Split
59% female / 41% male
Age Distribution
<65: 66, 65-74: 84, 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 ERIN CHRISTIANSEN-LEISY, FNP-BC 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
Gabapentin
167
Oxycodone Hcl
149
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
140
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
130
Morphine Sulfate Er
Morphine Sulfate
100
Pregabalin
71
Morphine Sulfate
62
Amitriptyline Hcl
54
Hydromorphone Hcl
54
Cyclobenzaprine Hcl
51

* 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 ERIN CHRISTIANSEN-LEISY, FNP-BC 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

ERIN CHRISTIANSEN-LEISY, FNP-BC's 1,589 claims are above the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Colorado

Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as CHRISTIANSEN-LEISY.

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

Frequently Asked Questions

What is ERIN CHRISTIANSEN-LEISY, FNP-BC's specialty?
ERIN CHRISTIANSEN-LEISY, FNP-BC specializes in Family Nurse Practitioner and practices in WINDSOR, Colorado. Credentials: FNP-BC.
How much does ERIN CHRISTIANSEN-LEISY, FNP-BC prescribe under Medicare Part D?
In 2023, ERIN CHRISTIANSEN-LEISY, FNP-BC wrote 1,589 Medicare Part D claims totaling $133K in drug costs for 180 beneficiaries.
Where is ERIN CHRISTIANSEN-LEISY, FNP-BC located?
ERIN CHRISTIANSEN-LEISY, FNP-BC is located at 687 GYRFALCON CT UNIT B, WINDSOR, CO, 80550. Phone: (970) 632-9661.
What is ERIN CHRISTIANSEN-LEISY, FNP-BC's NPI number?
ERIN CHRISTIANSEN-LEISY, FNP-BC's National Provider Identifier (NPI) is 1881292043, issued on 10/10/2020.
Does ERIN CHRISTIANSEN-LEISY, FNP-BC prescribe more brand-name or generic drugs?
ERIN CHRISTIANSEN-LEISY, FNP-BC's prescribing is 9% brand-name and 91% generic drugs by claim count, with $76K in brand drug costs.
Does ERIN CHRISTIANSEN-LEISY, FNP-BC prescribe opioids?
Yes, ERIN CHRISTIANSEN-LEISY, FNP-BC had 774 opioid claims in 2023 with an opioid prescribing rate of 48.7%.
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 ERIN CHRISTIANSEN-LEISY, FNP-BC prescribe most often?
Based on 2023 Medicare Part D data, ERIN CHRISTIANSEN-LEISY, FNP-BC's most frequently prescribed drugs include Gabapentin, Oxycodone Hcl, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ERIN CHRISTIANSEN-LEISY, FNP-BC accept Medicare?
ERIN CHRISTIANSEN-LEISY, FNP-BC appears in CMS Medicare data with 1,589 Part D claims and 180 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ERIN CHRISTIANSEN-LEISY, FNP-BC's credentials?
ERIN CHRISTIANSEN-LEISY, FNP-BC's NPI is 1881292043 with credentials FNP-BC. 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