2026 NPPES data Family Nurse Practitioner NPI 1649512641 FNP
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Samantha Purnell, FNP

Family Nurse Practitioner in Knoxville, Tennessee. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 209,817 in Family 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
955
Medicare Part D claims · 453 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
90%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$974.92
51 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Samantha Purnell, FNP filed 955 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Knoxville, Tennessee, prescribing 90% generic.

955
Part D claims, 2023
90%
generic prescribing
$974.92
industry payments (Sunshine Act)

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.

Samantha Purnell, FNP's Medicare Part D volume vs every U.S. prescriber

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

955 Top 25% higher than 75% 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%). This entry sits in this band. 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 Samantha Purnell, FNP?

Quality data not reported

NPI registry status

Active

Issued 03/18/2013

NPI 1649512641

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

955 22% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Tennessee

How Family Nurse Practitioner compares to other specialties among Tennessee providers

Tennessee providers

Largest specialties in Tennessee (% of in-state providers)

Family Nurse Practitioner — 6.4%Family Nurse Practitioner6.4%Pharmacist — 5.9%Pharmacist5.9%Student in an Organized Health Care Education/Training Program — 4.6%Student in an Organized Health Care Education/Training Program4.6%Physical Therapist — 4.2%Physical Therapist4.2%Behavior Technician — 4.2%Behavior Technician4.2%Registered Nurse — 3.9%Registered Nurse3.9%
Largest specialties in Tennessee (% of in-state providers)

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).

Samantha Purnell, FNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP credentials at 9333 PARK WEST BLVD STE 200, Knoxville, TN, 37923, with a listed phone of (865) 531-4600. NPI 1649512641 was issued on 03/18/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Purnell 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 955 prescription claims written by this provider, covering 453 Medicare beneficiaries and totaling roughly $28K in drug spend, split 9% brand-name and 90% generic by claim count, with an opioid prescribing rate of 1.3%. 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.

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

9333 PARK WEST BLVD STE 200
Knoxville, TN 37923

Provider Details

NPI 1649512641
Specialty Family Nurse Practitioner
Credentials FNP
Gender Female
NPI Issued 03/18/2013

Hospital and facility affiliations

Facilities where Samantha Purnell, FNP 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.

Summit Medical Group, PLLC
Knoxville, TN

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

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Samantha Purnell, FNP. Source: openpaymentsdata.cms.gov.

Total received

$975

Largest payer

Abbott Laboratories

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Generic-heavy

Samantha Purnell, FNP — brand share 9.0%
Family Nurse Practitioner average

9% brand-name claims vs 90% generic, on 955 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.

955
Total Claims
$28K
Total Drug Cost
453
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,124
Total Day Supply
19,127
Brand vs Generic
9% brand / 90% generic
Brand Drug Cost
$17K
Generic Drug Cost
$10K
Opioid Claims
12 (1.3% rate)
Antibiotic Claims
346

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
1.16
Gender Split
62% female / 38% male
Age Distribution
<65: 12, 65-74: 192, 75-84: 204, 85+: 45

Top Prescribed Drugs (Medicare Part D)

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

What Samantha Purnell, FNP 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
Albuterol Sulfate Hfa
Albuterol Sulfate
111
Azithromycin
98
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
92
Methylprednisolone
76
Cefdinir
63
Prednisone
58
Ciprofloxacin Hcl
22
Ventolin Hfa
Albuterol Sulfate
21
Doxycycline Hyclate
17
Cephalexin
16

* 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 Samantha Purnell, FNP 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

Samantha Purnell, FNP's 955 claims are below the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Tennessee

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

Compare Family Nurse Practitioner 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 Tennessee medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Family Nurse Practitioner 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 Samantha Purnell, FNP's specialty?
Samantha Purnell, FNP specializes in Family Nurse Practitioner and practices in Knoxville, Tennessee. Credentials: FNP.
How much does Samantha Purnell, FNP prescribe under Medicare Part D?
In 2023, Samantha Purnell, FNP wrote 955 Medicare Part D claims totaling $28K in drug costs for 453 beneficiaries.
Where is Samantha Purnell, FNP located?
Samantha Purnell, FNP is located at 9333 PARK WEST BLVD STE 200, Knoxville, TN, 37923. Phone: (865) 531-4600.
What is Samantha Purnell, FNP's NPI number?
Samantha Purnell, FNP's National Provider Identifier (NPI) is 1649512641, issued on 03/18/2013.
Does Samantha Purnell, FNP prescribe more brand-name or generic drugs?
Samantha Purnell, FNP's prescribing is 9% brand-name and 90% generic drugs by claim count, with $17K in brand drug costs.
Does Samantha Purnell, FNP prescribe opioids?
Yes, Samantha Purnell, FNP had 12 opioid claims in 2023 with an opioid prescribing rate of 1.3%.
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 Samantha Purnell, FNP prescribe most often?
Based on 2023 Medicare Part D data, Samantha Purnell, FNP's most frequently prescribed drugs include Albuterol Sulfate Hfa, Azithromycin, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Samantha Purnell, FNP accept Medicare?
Samantha Purnell, FNP appears in CMS Medicare data with 955 Part D claims and 453 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Samantha Purnell, FNP's credentials?
Samantha Purnell, FNP's NPI is 1649512641 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

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

Compiled from official public sources by the PlainDoctor editorial team.