2026 NPPES data Family Nurse Practitioner NPI 1801166673 NPC
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Elizabeth Gammada, NPC

Family Nurse Practitioner in Winchester, Tennessee. 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
456
Medicare Part D claims · 172 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
80%
generic claims · 20% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.7K
51 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

Elizabeth Gammada, NPC filed 456 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Winchester, Tennessee, prescribing 80% generic.

456
Part D claims, 2023
80%
generic prescribing
$1.7K
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.

Elizabeth Gammada, NPC's Medicare Part D volume vs every U.S. prescriber

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

456 Top 38% higher than 62% 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%). This entry sits in this band. 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 Elizabeth Gammada, NPC?

Quality data not reported

NPI registry status

Active

Issued 01/10/2012

NPI 1801166673

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

456 63% 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

Family Nurse Practitioner share within Tennessee

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

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).

Elizabeth Gammada, NPC appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding NPC credentials at 1509 OLD COWAN RD, Winchester, TN, 37398, with a listed phone of (931) 962-2540. NPI 1801166673 was issued on 01/10/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Gammada 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 456 prescription claims written by this provider, covering 172 Medicare beneficiaries and totaling roughly $58K in drug spend, split 20% brand-name and 80% generic by claim count. 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

1509 OLD COWAN RD
Winchester, TN 37398

Provider Details

NPI 1801166673
Specialty Family Nurse Practitioner
Credentials NPC
Gender Female
NPI Issued 01/10/2012

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 Elizabeth Gammada, NPC. Source: openpaymentsdata.cms.gov.

Total received

$1.7K

Largest payer

AstraZeneca Pharmaceuticals LP

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 · Typical

Elizabeth Gammada, NPC — brand share 20.0%
Specialty average (est.)

20% brand-name claims vs 80% generic, on 456 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.

456
Total Claims
$58K
Total Drug Cost
172
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
917
Total Day Supply
24,490
Brand vs Generic
20% brand / 80% generic
Brand Drug Cost
$51K
Generic Drug Cost
$6K
Antibiotic Claims
67

Patient Demographics

Average Patient Age
73.4 years
Avg HCC Risk Score
1.17
Gender Split
66% female / 34% male
Age Distribution
<65: 17, 65-74: 82, 75-84: 58, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

What Elizabeth Gammada, NPC 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
Levothyroxine Sodium
24
Doxycycline Hyclate
22
Rosuvastatin Calcium
18
Paxlovid (Eua)
Nirmatrelvir/Ritonavir
17
Pravastatin Sodium
15
Ciprofloxacin Hcl
13
Omeprazole
12
Shingrix
Varicella-Zoster Ge/As01b/Pf
12
Azithromycin
11
Losartan Potassium
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 Elizabeth Gammada, NPC 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

Elizabeth Gammada, NPC's 456 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 Gammada.

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 Elizabeth Gammada, NPC's specialty?
Elizabeth Gammada, NPC specializes in Family Nurse Practitioner and practices in Winchester, Tennessee. Credentials: NPC.
How much does Elizabeth Gammada, NPC prescribe under Medicare Part D?
In 2023, Elizabeth Gammada, NPC wrote 456 Medicare Part D claims totaling $58K in drug costs for 172 beneficiaries.
Where is Elizabeth Gammada, NPC located?
Elizabeth Gammada, NPC is located at 1509 OLD COWAN RD, Winchester, TN, 37398. Phone: (931) 962-2540.
What is Elizabeth Gammada, NPC's NPI number?
Elizabeth Gammada, NPC's National Provider Identifier (NPI) is 1801166673, issued on 01/10/2012.
Does Elizabeth Gammada, NPC prescribe more brand-name or generic drugs?
Elizabeth Gammada, NPC's prescribing is 20% brand-name and 80% generic drugs by claim count, with $51K in brand drug costs.
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 Elizabeth Gammada, NPC prescribe most often?
Based on 2023 Medicare Part D data, Elizabeth Gammada, NPC's most frequently prescribed drugs include Levothyroxine Sodium, Doxycycline Hyclate, Rosuvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Elizabeth Gammada, NPC accept Medicare?
Elizabeth Gammada, NPC appears in CMS Medicare data with 456 Part D claims and 172 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Elizabeth Gammada, NPC's credentials?
Elizabeth Gammada, NPC's NPI is 1801166673 with credentials NPC. 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