STEPHANIE CHEN, FNP-C
Family Nurse Practitioner in PHOENIX, Arizona. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
STEPHANIE CHEN, FNP-C filed 3,965 Medicare Part D claims in 2023 as a Family Nurse Practitioner in PHOENIX, Arizona, prescribing 84% generic.
- 4K
- Part D claims, 2023
- 84%
- 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.
STEPHANIE CHEN, FNP-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
3,965 Top 9% higher than 91% 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 STEPHANIE CHEN, FNP-C?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Arizona
How Family Nurse Practitioner compares to other specialties among Arizona providers
Family Nurse Practitioner share within Arizona
Family Nurse Practitioner is one of the more visible NUCC categories in Arizona
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Family Nurse Practitioner (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Family Nurse Practitioner ABMS/AOA estimate
Est. board-certified rate (Family Nurse Practitioner) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Family Nurse Practitioner US NPIs
Specialty board-certified rate — Family Nurse Practitioner estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
STEPHANIE CHEN, FNP-C appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP-C credentials at 240 W THOMAS RD # 404, PHOENIX, AZ, 85013, with a listed phone of (602) 406-6262. NPI 1679808109 was issued on 10/16/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHEN 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 3,965 prescription claims written by this provider, covering 413 Medicare beneficiaries and totaling roughly $2.2 million in drug spend, split 16% brand-name and 84% 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
Provider Details
| NPI | 1679808109 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNP-C |
| Gender | Female |
| NPI Issued | 10/16/2009 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm STEPHANIE CHEN, FNP-C's current license status, disciplinary history, and board certifications with the Arizona Medical Board in Arizona before relying on this page for a clinical or care decision.
How we sourced this profile
Brand vs generic prescribing mix · Typical
16% brand-name claims vs 84% generic, on 3,965 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.
Prescribing Breakdown
- 30-Day Fills
- 6,105
- Total Day Supply
- 177,064
- Brand vs Generic
- 16% brand / 84% generic
- Brand Drug Cost
- $1.7M
- Generic Drug Cost
- $474K
Patient Demographics
- Average Patient Age
- 53.8 years
- Avg HCC Risk Score
- 1.44
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 270, 65-74: 92, 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 STEPHANIE CHEN, FNP-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levetiracetam
Levetiracetam
464 claims
- Lacosamide
Lacosamide
425 claims
- Clobazam
Clobazam
416 claims
- Lamotrigine
Lamotrigine
406 claims
- Zonisamide
Zonisamide
324 claims
- Clonazepam
Clonazepam
309 claims
- Lamotrigine Er 120
Lamotrigine Er
120 claims
- Topiramate 119
Topiramate
119 claims
| Drug | Claims |
|---|---|
| Levetiracetam | 464 |
| Lacosamide | 425 |
| Clobazam | 416 |
| Lamotrigine | 406 |
| Zonisamide | 324 |
| Clonazepam | 309 |
| Lamotrigine Er Lamotrigine | 120 |
| Topiramate | 119 |
| Epidiolex Cannabidiol (Cbd) | 113 |
| Briviact Brivaracetam | 106 |
* 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 STEPHANIE CHEN, FNP-C fits within the Family Nurse Practitioner landscape nationally.
STEPHANIE CHEN, FNP-C's 3,965 claims are above the specialty average of 1,222.
Nearby Family Nurse Practitioner Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as CHEN.
Compare Family Nurse Practitioner nationally: see state-by-state distribution →
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Frequently Asked Questions
What is STEPHANIE CHEN, FNP-C's specialty? ▼
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What is STEPHANIE CHEN, FNP-C's NPI number? ▼
Does STEPHANIE CHEN, FNP-C prescribe more brand-name or generic drugs? ▼
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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