2026 NPPES data Surgery Physician NPI 1114149622 MD
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ALISON WILSON, MD

Surgery Physician in MARSHALLTOWN, Iowa. 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
170
Medicare Part D claims · 137 beneficiaries · Surgery Physician avg: 169
Generic prescribing
59%
generic claims · 41% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ALISON WILSON, MD filed 170 Medicare Part D claims in 2023 as a Surgery Physician in MARSHALLTOWN, Iowa, prescribing 59% generic.

170
Part D claims, 2023
59%
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.

ALISON WILSON, MD's Medicare Part D volume vs every U.S. prescriber

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

170 35th percentile higher than 35% 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 certification likely (heuristic — not verified)

ALISON WILSON, MD 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 ALISON WILSON, MD?

Quality data not reported

NPI registry status

Active

Issued 05/03/2007

NPI 1114149622

Primary specialty

Surgery Physician

Mid-sized

36,191 US NPIs in this specialty

Medicare Part D claims

170 1% vs specialty avg

2023 prescription claims

Specialty avg: 169

Specialty distribution in Iowa

How Surgery Physician compares to other specialties among Iowa providers

Iowa providers

Surgery Physician share within Iowa

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

Specialty board-certification context

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

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

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

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

ALISON WILSON, MD is a Surgery Physician provider practicing in MARSHALLTOWN, Iowa, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1114149622. 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.

ALISON WILSON, MD appears in the CMS NPPES registry as a Surgery Physician provider holding MD credentials at 421 E MERLE HIBBS BLVD, MARSHALLTOWN, IA, 50158, with a listed phone of (641) 752-6391. NPI 1114149622 was issued on 05/03/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WILSON 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 170 prescription claims written by this provider, covering 137 Medicare beneficiaries and totaling roughly $14K in drug spend, split 41% brand-name and 59% generic by claim count, with an opioid prescribing rate of 12.9%. 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.

Surgery Physician is a mid-sized specialty nationwide, with 36,191 enrolled providers across 56 states and an average of 169 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

421 E MERLE HIBBS BLVD
MARSHALLTOWN, IA 50158

Provider Details

NPI 1114149622
Specialty Surgery Physician
Credentials MD
Gender Female
NPI Issued 05/03/2007

Hospital and facility affiliations

Facilities where ALISON WILSON, MD 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.

FRANKLIN GENERAL HOSPITAL
HAMPTON, IA
Critical Access Hospitals
CMS CCN: 161308
MCFARLAND CLINIC PC
AMES, IA

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 · Above average

ALISON WILSON, MD — brand share 41.0%
Specialty average (est.)

41% brand-name claims vs 59% generic, on 170 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.

170
Total Claims
$14K
Total Drug Cost
137
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
172
Total Day Supply
1,210
Brand vs Generic
41% brand / 59% generic
Brand Drug Cost
$11K
Generic Drug Cost
$2K
Opioid Claims
22 (12.9% rate)
Antibiotic Claims
23

Patient Demographics

Average Patient Age
70.9 years
Avg HCC Risk Score
1.12
Gender Split
65% female / 35% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Sutab
Sod Sulf/Pot Chloride/Mag Sulf
62
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
22
Omeprazole
20
Sod Sulf-Potass Sulf-Mag Sulf
"Sodium
N/A

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

Surgery Physician Overview

How ALISON WILSON, MD fits within the Surgery Physician landscape nationally.

36,191
Surgery Physician Providers in US
56
States with Surgery Physician
169
Avg Claims per Provider

ALISON WILSON, MD's 170 claims are above the specialty average of 169.

Nearby Surgery Physician Providers in Iowa

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

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

Frequently Asked Questions

What is ALISON WILSON, MD's specialty?
ALISON WILSON, MD specializes in Surgery Physician and practices in MARSHALLTOWN, Iowa. Credentials: MD.
How much does ALISON WILSON, MD prescribe under Medicare Part D?
In 2023, ALISON WILSON, MD wrote 170 Medicare Part D claims totaling $14K in drug costs for 137 beneficiaries.
Where is ALISON WILSON, MD located?
ALISON WILSON, MD is located at 421 E MERLE HIBBS BLVD, MARSHALLTOWN, IA, 50158. Phone: (641) 752-6391.
What is ALISON WILSON, MD's NPI number?
ALISON WILSON, MD's National Provider Identifier (NPI) is 1114149622, issued on 05/03/2007.
Does ALISON WILSON, MD prescribe more brand-name or generic drugs?
ALISON WILSON, MD's prescribing is 41% brand-name and 59% generic drugs by claim count, with $11K in brand drug costs.
Does ALISON WILSON, MD prescribe opioids?
Yes, ALISON WILSON, MD had 22 opioid claims in 2023 with an opioid prescribing rate of 12.9%.
How many Surgery Physician providers are there in the US?
There are 36,191 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 169 Medicare Part D claims per year.
What drugs does ALISON WILSON, MD prescribe most often?
Based on 2023 Medicare Part D data, ALISON WILSON, MD's most frequently prescribed drugs include Sutab, Hydrocodone-Acetaminophen, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALISON WILSON, MD accept Medicare?
ALISON WILSON, MD appears in CMS Medicare data with 170 Part D claims and 137 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALISON WILSON, MD's credentials?
ALISON WILSON, MD's NPI is 1114149622 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