NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1962473751 M.D.
Verify on CMS → Thomas Chung, M.D.
Radiation Oncology Physician in Saint Louis, Missouri.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,029 in Radiation Oncology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
17
Medicare Part D claims · 13 beneficiaries · Radiation Oncology Physician avg: 186
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Thomas Chung, M.D. filed 17 Medicare Part D claims in 2023 as a Radiation Oncology Physician in Saint Louis, Missouri.
- 17
- 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.
Thomas Chung, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
17 0th percentile higher than 0% of 1,370,886 prescribers
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)
Thomas Chung, M.D. 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 Thomas Chung, M.D.?
Quality data not reportedPrimary specialty
Radiation Oncology Physician
Medicare Part D claims
17 91% vs specialty avg
Specialty distribution in Missouri
How Radiation Oncology Physician compares to other specialties among Missouri providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Radiation Oncology Physician. Verify directly:
How MIPS and board certification work
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).
Thomas Chung, M.D. appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding M.D. credentials at 915 N GRAND BLVD, Saint Louis, MO, 63106, with a listed phone of (314) 289-6324. NPI 1962473751 was issued on 01/30/2006.
Medicare Part D records for calendar year 2023 show 17 prescription claims written by this provider, covering 13 Medicare beneficiaries and totaling roughly $379 in drug spend.
Radiation Oncology Physician is a mid-sized specialty nationwide, with 6,029 enrolled providers across 53 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
Provider Details
| NPI | 1962473751 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 01/30/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
17
Total Claims
$379
Total Drug Cost
13
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 39
- Total Day Supply
- 1,080
- Generic Drug Cost
- $118
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 3.72
Radiation Oncology Physician Overview
How Thomas Chung, M.D. fits within the Radiation Oncology Physician landscape nationally.
6,029
Radiation Oncology Physician Providers in US
53
States with Radiation Oncology Physician
186
Avg Claims per Provider
Thomas Chung, M.D.'s 17 claims are below the specialty average of 186.
Nearby Radiation Oncology Physician Providers in Missouri
Other clinicians with the same primary specialty enrolled in Missouri, drawn from the same CMS NPPES roster as Chung.
Dr. Mohamed Abdelhakiem
MD
Columbia, MO
Dr. James Allen
MD
Jefferson City, MO
Dr. Anthony Apicelli
MD
Saint Louis, MO
Dr. Shahed Badiyan
MD
Saint Louis, MO
Dr. Kathy Baglan
M.D.
Saint Louis, MO
Compare Radiation Oncology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Missouri medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Radiation Oncology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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How to Find a Doctor
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Missouri
Frequently Asked Questions
What is Thomas Chung, M.D.'s specialty? ▼
Thomas Chung, M.D. specializes in Radiation Oncology Physician and practices in Saint Louis, Missouri. Credentials: M.D..
How much does Thomas Chung, M.D. prescribe under Medicare Part D? ▼
In 2023, Thomas Chung, M.D. wrote 17 Medicare Part D claims totaling $379 in drug costs for 13 beneficiaries.
Where is Thomas Chung, M.D. located? ▼
Thomas Chung, M.D. is located at 915 N GRAND BLVD, Saint Louis, MO, 63106. Phone: (314) 289-6324.
What is Thomas Chung, M.D.'s NPI number? ▼
Thomas Chung, M.D.'s National Provider Identifier (NPI) is 1962473751, issued on 01/30/2006.
How many Radiation Oncology Physician providers are there in the US? ▼
There are 6,029 Radiation Oncology Physician providers across 53 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
Does Thomas Chung, M.D. accept Medicare? ▼
Thomas Chung, M.D. appears in CMS Medicare data with 17 Part D claims and 13 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Chung, M.D.'s credentials? ▼
Thomas Chung, M.D.'s NPI is 1962473751 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.