NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1194196477 FNP
Verify on CMS → Amy Tammenga, FNP
Family Nurse Practitioner in Durham, North Carolina.
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
625
Medicare Part D claims · 129 beneficiaries · Family Nurse Practitioner avg: 1K
Industry payments
$24.95
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Amy Tammenga, FNP filed 625 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Durham, North Carolina.
- 625
- Part D claims, 2023
- $24.95
- 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.
Amy Tammenga, FNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
625 Top 31% higher than 69% of 1,370,886 prescribers
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 Amy Tammenga, FNP?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
625 49% vs specialty avg
Specialty distribution in North Carolina
How Family Nurse Practitioner compares to other specialties among North Carolina providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Nurse Practitioner. Verify directly:
How MIPS and board certification work
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).
Amy Tammenga, FNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP credentials at 20 DUKE MEDICINE CIR, Durham, NC, 27710, with a listed phone of (919) 684-8964. NPI 1194196477 was issued on 10/13/2015.
Medicare Part D records for calendar year 2023 show 625 prescription claims written by this provider, covering 129 Medicare beneficiaries and totaling roughly $38K in drug spend.
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
Provider Details
| NPI | 1194196477 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 10/13/2015 |
Hospital and facility affiliations
Facilities where Amy Tammenga, 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.
Duke University Affiliated Physicians, Inc.
Durham, NC
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 Amy Tammenga, FNP. Source: openpaymentsdata.cms.gov.
Total received
$25
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
625
Total Claims
$38K
Total Drug Cost
129
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 969
- Total Day Supply
- 27,133
- Generic Drug Cost
- $26K
- Antibiotic Claims
- 55
Patient Demographics
- Average Patient Age
- 74.3 years
- Avg HCC Risk Score
- 2.83
- Gender Split
- 41% female / 59% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Amy Tammenga, FNP prescribes most
Top Medicare Part D drugs by claim count, 2023
- Acyclovir
Acyclovir
199 claims
- Allopurinol
Allopurinol
130 claims
- Valacyclovir 75
Valacyclovir
75 claims
- Sulfamethoxazole-T… 30
Sulfamethoxazole-Trimethoprim
30 claims
- Entecavir 17
Entecavir
17 claims
- Pantoprazole Sodium 15
Pantoprazole Sodium
15 claims
- Levofloxacin 14
Levofloxacin
14 claims
- Prochlorperazine M… 11
Prochlorperazine Maleate
11 claims
| Drug | Claims |
|---|---|
| Acyclovir | 199 |
| Allopurinol | 130 |
| Valacyclovir Valacyclovir Hcl | 75 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 30 |
| Entecavir | 17 |
| Pantoprazole Sodium | 15 |
| Levofloxacin | 14 |
| Prochlorperazine Maleate | 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 Amy Tammenga, 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
Amy Tammenga, FNP's 625 claims are below the specialty average of 1,222.
Nearby Family Nurse Practitioner Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Tammenga.
Dr. Aloysius Abaya
FNP
Wilson, NC
Dr. Megan Abbott
FNP-C
Asheville, NC
Dr. Sude Abdulahi
NP
Wake Forest, NC
Dr. Gwen Abdulhafid
NP
Sylva, NC
Dr. Natalie Abernathy
FNP-C
Connelly Springs, NC
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 North Carolina 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
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Explore North Carolina
Frequently Asked Questions
What is Amy Tammenga, FNP's specialty? ▼
Amy Tammenga, FNP specializes in Family Nurse Practitioner and practices in Durham, North Carolina. Credentials: FNP.
How much does Amy Tammenga, FNP prescribe under Medicare Part D? ▼
In 2023, Amy Tammenga, FNP wrote 625 Medicare Part D claims totaling $38K in drug costs for 129 beneficiaries.
Where is Amy Tammenga, FNP located? ▼
Amy Tammenga, FNP is located at 20 DUKE MEDICINE CIR, Durham, NC, 27710. Phone: (919) 684-8964.
What is Amy Tammenga, FNP's NPI number? ▼
Amy Tammenga, FNP's National Provider Identifier (NPI) is 1194196477, issued on 10/13/2015.
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 Amy Tammenga, FNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Amy Tammenga, FNP's most frequently prescribed drugs include Acyclovir, Allopurinol, Valacyclovir. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Amy Tammenga, FNP accept Medicare? ▼
Amy Tammenga, FNP appears in CMS Medicare data with 625 Part D claims and 129 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Amy Tammenga, FNP's credentials? ▼
Amy Tammenga, FNP's NPI is 1194196477 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
View source datasets and methodology notes
- 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.