2026 NPPES data Radiation Oncology Physician NPI 1629175393 M.D.
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SHIAO WOO, M.D.

Radiation Oncology Physician in LOUISVILLE, Kentucky. 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
14
Medicare Part D claims · Radiation Oncology Physician avg: 186
MIPS score
73.1977/100
▼ 10 pts below national avg 83.1 · [object Object]
Industry payments
$179.07
10 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

SHIAO WOO, M.D. reported a CMS MIPS final score of 73.1977/100 — below the 83.1 national average — and filed 14 Medicare Part D claims in 2023.

73.1977/100
MIPS score · -10 vs avg
14
Part D claims, 2023
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.

SHIAO WOO, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

73 11th percentile higher than 11% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

SHIAO WOO, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — 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 SHIAO WOO, M.D.?

Below national average

NPI registry status

Active

Issued 09/17/2006

NPI 1629175393

Primary specialty

Radiation Oncology Physician

Mid-sized

6,018 US NPIs in this specialty

Medicare Part D claims

14 92% vs specialty avg

2023 prescription claims

Specialty avg: 186

MIPS final score

73.1977/100 9.902299999999997% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Kentucky

How Radiation Oncology Physician compares to other specialties among Kentucky providers

Kentucky providers

Radiation Oncology Physician share within Kentucky

1. Radiation Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Radiation Oncology Physician share within Kentucky

Medicare quality performance — MIPS

SHIAO WOO, M.D.'s 2023 MIPS final score plotted against the Radiation Oncology Physician national average

Below national average
MIPS Final Score
73.1977/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Radiation Oncology Physician) — 73.1977/100 vs national avg 83.1

0%100%National avg83%73.2%
MIPS final score (Radiation Oncology Physician) — 73.1977/100 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).

SHIAO WOO, M.D. appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding M.D. credentials at 529 S, JACKSON STREET, LOUISVILLE, KY, 40202, with a listed phone of (502) 561-2700. NPI 1629175393 was issued on 09/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WOO 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 14 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $671 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 73.1977/100 for the 2023 performance year (Quality 58.7401, Cost 51.919), compared with the national average of 83.1.

Radiation Oncology Physician is a mid-sized specialty nationwide, with 6,018 enrolled providers across 52 states and an average of 186 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

529 S, JACKSON STREET
LOUISVILLE, KY 40202

Provider Details

NPI 1629175393
Specialty Radiation Oncology Physician
Credentials M.D.
Gender Male
NPI Issued 09/17/2006

CMS Quality Score (MIPS)

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

73.1977
Final Score
Avg: 83.1
58.7401
Quality
51.919
Cost
100
Promoting Interoperability

Reporting: Group practice

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 SHIAO WOO, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$179

Largest payer

Merck Sharp & Dohme LLC

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.

Medicare Part D Prescribing Data

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

14
Total Claims
$671
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
19
Total Day Supply
506

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
1.67

Radiation Oncology Physician Overview

How SHIAO WOO, M.D. fits within the Radiation Oncology Physician landscape nationally.

6,018
Radiation Oncology Physician Providers in US
52
States with Radiation Oncology Physician
186
Avg Claims per Provider

SHIAO WOO, M.D.'s 14 claims are below the specialty average of 186.

Nearby Radiation Oncology Physician Providers in Kentucky

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

Compare Radiation Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SHIAO WOO, M.D.'s specialty?
SHIAO WOO, M.D. specializes in Radiation Oncology Physician and practices in LOUISVILLE, Kentucky. Credentials: M.D..
How much does SHIAO WOO, M.D. prescribe under Medicare Part D?
In 2023, SHIAO WOO, M.D. wrote 14 Medicare Part D claims totaling $671 in drug costs for N/A beneficiaries.
What is SHIAO WOO, M.D.'s Medicare quality score?
SHIAO WOO, M.D. has a CMS MIPS Final Score of 73.1977/100 (Quality: 58.7401, Cost: 51.919). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is SHIAO WOO, M.D. located?
SHIAO WOO, M.D. is located at 529 S, JACKSON STREET, LOUISVILLE, KY, 40202. Phone: (502) 561-2700.
What is SHIAO WOO, M.D.'s NPI number?
SHIAO WOO, M.D.'s National Provider Identifier (NPI) is 1629175393, issued on 09/17/2006.
How many Radiation Oncology Physician providers are there in the US?
There are 6,018 Radiation Oncology Physician providers across 52 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
Does SHIAO WOO, M.D. accept Medicare?
SHIAO WOO, M.D. appears in CMS Medicare data with 14 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHIAO WOO, M.D.'s credentials?
SHIAO WOO, M.D.'s NPI is 1629175393 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