2026 NPPES data Surgery Physician NPI 1295183184 M.D.
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GARRETT SHACKLETON, M.D.

Surgery Physician in WAUKEE, 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
146
Medicare Part D claims · 44 beneficiaries · Surgery Physician avg: 169
MIPS score
97.5814/100
▲ 14 pts above national avg 83.1 · [object Object]
What the federal data reveals: GARRETT SHACKLETON, M.D. is a Surgery Physician ([object Object]) practicing in WAUKEE, Iowa with a Medicare Part D prescribing footprint of 146 claims across 44 beneficiaries . Their CMS MIPS Final Score of 97.5814/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: GARRETT SHACKLETON, M.D. reported a CMS MIPS final score of 97.5814 out of 100, above the 83.1 national average, and filed 146 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

GARRETT SHACKLETON, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

GARRETT SHACKLETON, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 06/01/2016

NPI 1295183184

Primary specialty

Surgery Physician

Mid-sized

36,191 US NPIs in this specialty

Medicare Part D claims

146 14% vs specialty avg

2023 prescription claims

Specialty avg: 169

MIPS final score

97.5814/100 14.481400000000008% pts

Exceptional band

vs 83.1 national avg

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

Medicare quality performance — MIPS

GARRETT SHACKLETON, M.D.'s 2023 MIPS final score plotted against the Surgery Physician national average

High performer (top quartile)
MIPS Final Score
97.5814/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Surgery Physician) — 97.5814/100 vs national avg 83.1

0%100%National avg83%97.6%
MIPS final score (Surgery Physician) — 97.5814/100 vs national avg 83.1

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).

GARRETT SHACKLETON, M.D. is a Surgery Physician provider practicing in WAUKEE, Iowa, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1295183184. 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.

GARRETT SHACKLETON, M.D. appears in the CMS NPPES registry as a Surgery Physician provider holding M.D. credentials at 2515 GRAND PRAIRIE PKWY, WAUKEE, IA, 50263, with a listed phone of (515) 265-1300. NPI 1295183184 was issued on 06/01/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SHACKLETON 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 146 prescription claims written by this provider, covering 44 Medicare beneficiaries and totaling roughly $3K in drug spend, with an opioid prescribing rate of 20.5%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 97.5814/100 for the 2023 performance year (Quality 86.5348), compared with the national average of 83.1.

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

2515 GRAND PRAIRIE PKWY
WAUKEE, IA 50263

Provider Details

NPI 1295183184
Specialty Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 06/01/2016

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

97.5814
Final Score
Avg: 83.1
86.5348
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where GARRETT SHACKLETON, M.D. 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.

POUDRE VALLEY MEDICAL GROUP LLC
COLORADO SPRINGS, CO

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

Medicare Part D Prescribing Data

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

146
Total Claims
$3K
Total Drug Cost
44
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
154
Total Day Supply
1,664
Generic Drug Cost
$1K
Opioid Claims
30 (20.5% rate)
Antibiotic Claims
56

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
1.29
Gender Split
64% female / 36% 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
Metronidazole
27
Ciprofloxacin Hcl
24
Gabapentin
19
Oxycodone Hcl
19
Methocarbamol
17

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

Surgery Physician Overview

How GARRETT SHACKLETON, M.D. fits within the Surgery Physician landscape nationally.

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

GARRETT SHACKLETON, M.D.'s 146 claims are below 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 SHACKLETON.

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

Frequently Asked Questions

What is GARRETT SHACKLETON, M.D.'s specialty?
GARRETT SHACKLETON, M.D. specializes in Surgery Physician and practices in WAUKEE, Iowa. Credentials: M.D..
How much does GARRETT SHACKLETON, M.D. prescribe under Medicare Part D?
In 2023, GARRETT SHACKLETON, M.D. wrote 146 Medicare Part D claims totaling $3K in drug costs for 44 beneficiaries.
What is GARRETT SHACKLETON, M.D.'s Medicare quality score?
GARRETT SHACKLETON, M.D. has a CMS MIPS Final Score of 97.5814/100 (Quality: 86.5348). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GARRETT SHACKLETON, M.D. located?
GARRETT SHACKLETON, M.D. is located at 2515 GRAND PRAIRIE PKWY, WAUKEE, IA, 50263. Phone: (515) 265-1300.
What is GARRETT SHACKLETON, M.D.'s NPI number?
GARRETT SHACKLETON, M.D.'s National Provider Identifier (NPI) is 1295183184, issued on 06/01/2016.
Does GARRETT SHACKLETON, M.D. prescribe opioids?
Yes, GARRETT SHACKLETON, M.D. had 30 opioid claims in 2023 with an opioid prescribing rate of 20.5%.
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 GARRETT SHACKLETON, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GARRETT SHACKLETON, M.D.'s most frequently prescribed drugs include Metronidazole, Ciprofloxacin Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GARRETT SHACKLETON, M.D. accept Medicare?
GARRETT SHACKLETON, M.D. appears in CMS Medicare data with 146 Part D claims and 44 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GARRETT SHACKLETON, M.D.'s credentials?
GARRETT SHACKLETON, M.D.'s NPI is 1295183184 with credentials M.D.. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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