2026 NPPES data Nurse Practitioner NPI 1245542331 APRN
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JAMES CALHOUN, APRN

Nurse Practitioner in PRESCOTT, 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
3K
Medicare Part D claims · 292 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$75.42
4 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

JAMES CALHOUN, APRN filed 3,025 Medicare Part D claims in 2023 as a Nurse Practitioner in PRESCOTT, Arizona, prescribing 98% generic.

3K
Part D claims, 2023
98%
generic prescribing
$75.42
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.

JAMES CALHOUN, APRN's Medicare Part D volume vs every U.S. prescriber

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

3,025 Top 11% higher than 89% 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%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 JAMES CALHOUN, APRN?

Quality data not reported

NPI registry status

Active

Issued 07/06/2010

NPI 1245542331

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

3,025 179% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Arizona

How Nurse Practitioner compares to other specialties among Arizona providers

Arizona providers

Nurse Practitioner share within Arizona

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

Specialty board-certification context

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

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

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

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

JAMES CALHOUN, APRN appears in the CMS NPPES registry as a Nurse Practitioner provider holding APRN credentials at 1001 WILLOW CREEK RD STE 3100, PRESCOTT, AZ, 86301, with a listed phone of (928) 445-4818. NPI 1245542331 was issued on 07/06/2010. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CALHOUN 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 3,025 prescription claims written by this provider, covering 292 Medicare beneficiaries and totaling roughly $92K in drug spend, split 2% brand-name and 98% generic by claim count, with an opioid prescribing rate of 52.5%. 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.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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

1001 WILLOW CREEK RD STE 3100
PRESCOTT, AZ 86301

Provider Details

NPI 1245542331
Specialty Nurse Practitioner
Credentials APRN
Gender Male
NPI Issued 07/06/2010

Hospital and facility affiliations

Facilities where JAMES CALHOUN, APRN 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.

YAVAPAI REGIONAL MEDICAL CENTER PHYSICIAN CARE LLC
PRESCOTT, AZ

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 JAMES CALHOUN, APRN. Source: openpaymentsdata.cms.gov.

Total received

$75

Largest payer

ABBVIE INC.

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

JAMES CALHOUN, APRN — brand share 2.0%
Specialty average (est.)

2% brand-name claims vs 98% generic, on 3,025 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.

3,025
Total Claims
$92K
Total Drug Cost
292
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,071
Total Day Supply
89,442
Brand vs Generic
2% brand / 98% generic
Brand Drug Cost
$15K
Generic Drug Cost
$77K
Opioid Claims
1,589 (52.5% rate)

Patient Demographics

Average Patient Age
68.9 years
Avg HCC Risk Score
1.51
Gender Split
62% female / 38% male
Age Distribution
<65: 83, 65-74: 127, 75-84: 68, 85+: 14

Top Prescribed Drugs (Medicare Part D)

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

What JAMES CALHOUN, APRN 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
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
1,233
Gabapentin
651
Tramadol Hcl
239
Tizanidine Hcl
219
Pregabalin
111
Buprenorphine
79
Baclofen
70
Naloxone Hcl
47
Cyclobenzaprine Hcl
46
Topiramate
31

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

Nurse Practitioner Overview

How JAMES CALHOUN, APRN fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

JAMES CALHOUN, APRN's 3,025 claims are above the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Arizona

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

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

Frequently Asked Questions

What is JAMES CALHOUN, APRN's specialty?
JAMES CALHOUN, APRN specializes in Nurse Practitioner and practices in PRESCOTT, Arizona. Credentials: APRN.
How much does JAMES CALHOUN, APRN prescribe under Medicare Part D?
In 2023, JAMES CALHOUN, APRN wrote 3,025 Medicare Part D claims totaling $92K in drug costs for 292 beneficiaries.
Where is JAMES CALHOUN, APRN located?
JAMES CALHOUN, APRN is located at 1001 WILLOW CREEK RD STE 3100, PRESCOTT, AZ, 86301. Phone: (928) 445-4818.
What is JAMES CALHOUN, APRN's NPI number?
JAMES CALHOUN, APRN's National Provider Identifier (NPI) is 1245542331, issued on 07/06/2010.
Does JAMES CALHOUN, APRN prescribe more brand-name or generic drugs?
JAMES CALHOUN, APRN's prescribing is 2% brand-name and 98% generic drugs by claim count, with $15K in brand drug costs.
Does JAMES CALHOUN, APRN prescribe opioids?
Yes, JAMES CALHOUN, APRN had 1,589 opioid claims in 2023 with an opioid prescribing rate of 52.5%.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does JAMES CALHOUN, APRN prescribe most often?
Based on 2023 Medicare Part D data, JAMES CALHOUN, APRN's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Tramadol Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JAMES CALHOUN, APRN accept Medicare?
JAMES CALHOUN, APRN appears in CMS Medicare data with 3,025 Part D claims and 292 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAMES CALHOUN, APRN's credentials?
JAMES CALHOUN, APRN's NPI is 1245542331 with credentials APRN. 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