2026 NPPES data Emergency Medicine Physician NPI 1588238331 MD
Verify on CMS →

JOHN ROLSHOVEN, MD

Emergency Medicine Physician in SPARKS, Nevada. 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
89
Medicare Part D claims · 66 beneficiaries · Emergency Medicine Physician avg: 352

What the federal data shows

JOHN ROLSHOVEN, MD filed 89 Medicare Part D claims in 2023 as a Emergency Medicine Physician in SPARKS, Nevada.

89
Part D claims, 2023

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.

JOHN ROLSHOVEN, MD's Medicare Part D volume vs every U.S. prescriber

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

89 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 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

Board-eligible specialty (heuristic — not verified)

JOHN ROLSHOVEN, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about JOHN ROLSHOVEN, MD?

Quality data not reported

NPI registry status

Active

Issued 05/17/2021

NPI 1588238331

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

89 75% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Nevada

How Emergency Medicine Physician compares to other specialties among Nevada providers

Nevada providers

Emergency Medicine Physician share within Nevada

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within Nevada

Specialty board-certification context

Estimated specialty board-certified rate — Emergency Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Emergency Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Emergency Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Emergency Medicine Physician) — 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).

JOHN ROLSHOVEN, MD appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD credentials at 2385 E PRATER WAY STE 205, SPARKS, NV, 89434, with a listed phone of (775) 356-4888. NPI 1588238331 was issued on 05/17/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ROLSHOVEN 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 89 prescription claims written by this provider, covering 66 Medicare beneficiaries and totaling roughly $2K in drug spend. 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.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

2385 E PRATER WAY STE 205
SPARKS, NV 89434

Provider Details

NPI 1588238331
Specialty Emergency Medicine Physician
Credentials MD
Gender Male
NPI Issued 05/17/2021

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

89
Total Claims
$2K
Total Drug Cost
66
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
89
Total Day Supply
830
Generic Drug Cost
$918
Antibiotic Claims
41

Patient Demographics

Average Patient Age
69.1 years
Avg HCC Risk Score
1.74
Gender Split
58% female / 42% male
Age Distribution
<65: 19, 65-74: 24, 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.

Drug Claims
Cephalexin
11

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

Emergency Medicine Physician Overview

How JOHN ROLSHOVEN, MD fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

JOHN ROLSHOVEN, MD's 89 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Nevada

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

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN ROLSHOVEN, MD's specialty?
JOHN ROLSHOVEN, MD specializes in Emergency Medicine Physician and practices in SPARKS, Nevada. Credentials: MD.
How much does JOHN ROLSHOVEN, MD prescribe under Medicare Part D?
In 2023, JOHN ROLSHOVEN, MD wrote 89 Medicare Part D claims totaling $2K in drug costs for 66 beneficiaries.
Where is JOHN ROLSHOVEN, MD located?
JOHN ROLSHOVEN, MD is located at 2385 E PRATER WAY STE 205, SPARKS, NV, 89434. Phone: (775) 356-4888.
What is JOHN ROLSHOVEN, MD's NPI number?
JOHN ROLSHOVEN, MD's National Provider Identifier (NPI) is 1588238331, issued on 05/17/2021.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does JOHN ROLSHOVEN, MD prescribe most often?
Based on 2023 Medicare Part D data, JOHN ROLSHOVEN, MD's most frequently prescribed drugs include Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN ROLSHOVEN, MD accept Medicare?
JOHN ROLSHOVEN, MD appears in CMS Medicare data with 89 Part D claims and 66 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN ROLSHOVEN, MD's credentials?
JOHN ROLSHOVEN, MD's NPI is 1588238331 with credentials MD. 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