2026 NPPES data Hospitalist Physician NPI 1508286386
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NICHOLAS GUSTAFSON

Hospitalist Physician in SHEBOYGAN, Wisconsin. 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
2K
Medicare Part D claims · 266 beneficiaries · Hospitalist Physician avg: 888
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

NICHOLAS GUSTAFSON filed 1,507 Medicare Part D claims in 2023 as a Hospitalist Physician in SHEBOYGAN, Wisconsin, prescribing 83% generic.

2K
Part D claims, 2023
83%
generic prescribing
Likely
board-certified (heuristic)

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.

NICHOLAS GUSTAFSON's Medicare Part D volume vs every U.S. prescriber

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

1,507 Top 19% higher than 81% 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%). This entry sits in this band. 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 certification likely (heuristic — not verified)

NICHOLAS GUSTAFSON practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about NICHOLAS GUSTAFSON?

Quality data not reported

NPI registry status

Active

Issued 04/21/2014

NPI 1508286386

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

1,507 70% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Wisconsin

How Hospitalist Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Hospitalist Physician share within Wisconsin

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within Wisconsin

Specialty board-certification context

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

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

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

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

NICHOLAS GUSTAFSON appears in the CMS NPPES registry as a Hospitalist Physician provider at 1222 N 23RD ST, SHEBOYGAN, WI, 53081, with a listed phone of (920) 457-6800. NPI 1508286386 was issued on 04/21/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GUSTAFSON 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 1,507 prescription claims written by this provider, covering 266 Medicare beneficiaries and totaling roughly $2.4 million in drug spend, split 17% brand-name and 83% generic by claim count, with an opioid prescribing rate of 5.6%. 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

1222 N 23RD ST
SHEBOYGAN, WI 53081

Provider Details

NPI 1508286386
Specialty Hospitalist Physician
Gender Male
NPI Issued 04/21/2014

Hospital and facility affiliations

Facilities where NICHOLAS GUSTAFSON 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.

AURORA HEALTH CARE CENTRAL, INC.
SHEBOYGAN, WI
AURORA MEDICAL GROUP, INC.
SHEBOYGAN, WI

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

NICHOLAS GUSTAFSON — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 1,507 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.

1,507
Total Claims
$2.4M
Total Drug Cost
266
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,253
Total Day Supply
58,202
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$2.3M
Generic Drug Cost
$123K
Opioid Claims
85 (5.6% rate)
Antibiotic Claims
31

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
1.96
Gender Split
60% female / 40% male
Age Distribution
<65: 26, 65-74: 118, 75-84: 91, 85+: 31

Top Prescribed Drugs (Medicare Part D)

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

What NICHOLAS GUSTAFSON 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
Anastrozole
177
Prednisone
95
Prochlorperazine Maleate
91
Eliquis
Apixaban
76
Letrozole
75
Dexamethasone
62
Tamoxifen Citrate
53
Acyclovir
52
Hydroxyurea
44
Ondansetron Hcl
36

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

Hospitalist Physician Overview

How NICHOLAS GUSTAFSON fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

NICHOLAS GUSTAFSON's 1,507 claims are above the specialty average of 888.

Nearby Hospitalist Physician Providers in Wisconsin

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

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is NICHOLAS GUSTAFSON's specialty?
NICHOLAS GUSTAFSON specializes in Hospitalist Physician and practices in SHEBOYGAN, Wisconsin.
How much does NICHOLAS GUSTAFSON prescribe under Medicare Part D?
In 2023, NICHOLAS GUSTAFSON wrote 1,507 Medicare Part D claims totaling $2.4M in drug costs for 266 beneficiaries.
Where is NICHOLAS GUSTAFSON located?
NICHOLAS GUSTAFSON is located at 1222 N 23RD ST, SHEBOYGAN, WI, 53081. Phone: (920) 457-6800.
What is NICHOLAS GUSTAFSON's NPI number?
NICHOLAS GUSTAFSON's National Provider Identifier (NPI) is 1508286386, issued on 04/21/2014.
Does NICHOLAS GUSTAFSON prescribe more brand-name or generic drugs?
NICHOLAS GUSTAFSON's prescribing is 17% brand-name and 83% generic drugs by claim count, with $2.3M in brand drug costs.
Does NICHOLAS GUSTAFSON prescribe opioids?
Yes, NICHOLAS GUSTAFSON had 85 opioid claims in 2023 with an opioid prescribing rate of 5.6%.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does NICHOLAS GUSTAFSON prescribe most often?
Based on 2023 Medicare Part D data, NICHOLAS GUSTAFSON's most frequently prescribed drugs include Anastrozole, Prednisone, Prochlorperazine Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NICHOLAS GUSTAFSON accept Medicare?
NICHOLAS GUSTAFSON appears in CMS Medicare data with 1,507 Part D claims and 266 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NICHOLAS GUSTAFSON's credentials?
NICHOLAS GUSTAFSON's NPI is 1508286386. 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