2026 NPPES data Acute Care Nurse Practitioner NPI 1538562426 ACNP
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JENNIFER ARMFIELD, ACNP

Acute Care Nurse Practitioner in PHOENIX, Arizona. 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
841
Medicare Part D claims · 186 beneficiaries · Acute Care Nurse Practitioner avg: 576
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

JENNIFER ARMFIELD, ACNP filed 841 Medicare Part D claims in 2023 as a Acute Care Nurse Practitioner in PHOENIX, Arizona, prescribing 89% generic.

841
Part D claims, 2023
89%
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.

JENNIFER ARMFIELD, ACNP's Medicare Part D volume vs every U.S. prescriber

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

841 Top 27% higher than 73% 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 JENNIFER ARMFIELD, ACNP?

Quality data not reported

NPI registry status

Active

Issued 10/06/2014

NPI 1538562426

Primary specialty

Acute Care Nurse Practitioner

Mid-sized

24,583 US NPIs in this specialty

Medicare Part D claims

841 46% vs specialty avg

2023 prescription claims

Specialty avg: 576

Specialty distribution in Arizona

How Acute Care Nurse Practitioner compares to other specialties among Arizona providers

Arizona providers

Acute Care Nurse Practitioner share within Arizona

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

Specialty board-certification context

Estimated specialty board-certified rate — Acute Care Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Acute Care Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Acute Care Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Acute Care 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).

JENNIFER ARMFIELD, ACNP is a Acute Care Nurse Practitioner provider practicing in PHOENIX, Arizona, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: ACNP. NPI: 1538562426. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

JENNIFER ARMFIELD, ACNP appears in the CMS NPPES registry as a Acute Care Nurse Practitioner provider holding ACNP credentials at 240 W THOMAS RD # 301, PHOENIX, AZ, 85013, with a listed phone of (602) 406-6262. NPI 1538562426 was issued on 10/06/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARMFIELD 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 841 prescription claims written by this provider, covering 186 Medicare beneficiaries and totaling roughly $382K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 2.3%. 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.

Acute Care Nurse Practitioner is a mid-sized specialty nationwide, with 24,583 enrolled providers across 53 states and an average of 576 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

240 W THOMAS RD # 301
PHOENIX, AZ 85013

Provider Details

NPI 1538562426
Specialty Acute Care Nurse Practitioner
Credentials ACNP
Gender Female
NPI Issued 10/06/2014

Brand vs generic prescribing mix · Typical

JENNIFER ARMFIELD, ACNP — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 841 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.

841
Total Claims
$382K
Total Drug Cost
186
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,786
Total Day Supply
52,883
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$273K
Generic Drug Cost
$109K
Opioid Claims
19 (2.3% rate)

Patient Demographics

Average Patient Age
71.9 years
Avg HCC Risk Score
1.61
Gender Split
42% female / 58% male
Age Distribution
<65: 26, 65-74: 79, 75-84: 68, 85+: 13

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Carbidopa-Levodopa
Carbidopa/Levodopa
165
Carbidopa-Levodopa Er
Carbidopa/Levodopa
64
Clonazepam
52
Primidone
42
Rytary
Carbidopa/Levodopa
41
Gabapentin
37
Quetiapine Fumarate
32
Ropinirole Hcl
30
Amantadine
Amantadine Hcl
28
Mirtazapine
22

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Acute Care Nurse Practitioner Overview

How JENNIFER ARMFIELD, ACNP fits within the Acute Care Nurse Practitioner landscape nationally.

24,583
Acute Care Nurse Practitioner Providers in US
53
States with Acute Care Nurse Practitioner
576
Avg Claims per Provider

JENNIFER ARMFIELD, ACNP's 841 claims are above the specialty average of 576.

Nearby Acute Care Nurse Practitioner Providers in Arizona

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

Compare Acute Care Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is JENNIFER ARMFIELD, ACNP's specialty?
JENNIFER ARMFIELD, ACNP specializes in Acute Care Nurse Practitioner and practices in PHOENIX, Arizona. Credentials: ACNP.
How much does JENNIFER ARMFIELD, ACNP prescribe under Medicare Part D?
In 2023, JENNIFER ARMFIELD, ACNP wrote 841 Medicare Part D claims totaling $382K in drug costs for 186 beneficiaries.
Where is JENNIFER ARMFIELD, ACNP located?
JENNIFER ARMFIELD, ACNP is located at 240 W THOMAS RD # 301, PHOENIX, AZ, 85013. Phone: (602) 406-6262.
What is JENNIFER ARMFIELD, ACNP's NPI number?
JENNIFER ARMFIELD, ACNP's National Provider Identifier (NPI) is 1538562426, issued on 10/06/2014.
Does JENNIFER ARMFIELD, ACNP prescribe more brand-name or generic drugs?
JENNIFER ARMFIELD, ACNP's prescribing is 11% brand-name and 89% generic drugs by claim count, with $273K in brand drug costs.
Does JENNIFER ARMFIELD, ACNP prescribe opioids?
Yes, JENNIFER ARMFIELD, ACNP had 19 opioid claims in 2023 with an opioid prescribing rate of 2.3%.
How many Acute Care Nurse Practitioner providers are there in the US?
There are 24,583 Acute Care Nurse Practitioner providers across 53 states in the US. The average Acute Care Nurse Practitioner provider writes 576 Medicare Part D claims per year.
What drugs does JENNIFER ARMFIELD, ACNP prescribe most often?
Based on 2023 Medicare Part D data, JENNIFER ARMFIELD, ACNP's most frequently prescribed drugs include Carbidopa-Levodopa, Carbidopa-Levodopa Er, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JENNIFER ARMFIELD, ACNP accept Medicare?
JENNIFER ARMFIELD, ACNP appears in CMS Medicare data with 841 Part D claims and 186 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JENNIFER ARMFIELD, ACNP's credentials?
JENNIFER ARMFIELD, ACNP's NPI is 1538562426 with credentials ACNP. 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