NPI registry status
Active
2026 NPPES data Radiation Oncology Physician NPI 1235195736 M.D.
Verify on CMS → John Chinault, M.D.
Radiation Oncology Physician in Fredericksburg, Virginia.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,018 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
56
Medicare Part D claims · 27 beneficiaries · Radiation Oncology Physician avg: 186
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$114.8
1 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
John Chinault, M.D. filed 56 Medicare Part D claims in 2023 as a Radiation Oncology Physician in Fredericksburg, Virginia, prescribing 75% generic.
- 56
- Part D claims, 2023
- 75%
- 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.
John Chinault, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
56 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 certification likely (heuristic, not verified)
John Chinault, M.D. 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 John Chinault, M.D.?
Quality data not reportedPrimary specialty
Radiation Oncology Physician
Medicare Part D claims
56 70% vs specialty avg
Specialty distribution in Virginia
How Radiation Oncology Physician compares to other specialties among Virginia 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).
John Chinault, M.D. appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding M.D. credentials at 6105 HEALTH CENTER LN, Fredericksburg, VA, 22407, with a listed phone of (540) 786-5262. NPI 1235195736 was issued on 04/24/2006.
Medicare Part D records for calendar year 2023 show 56 prescription claims written by this provider, covering 27 Medicare beneficiaries and totaling roughly $936 in drug spend, split 25% brand-name and 75% generic by claim count.
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
Provider Details
| NPI | 1235195736 |
|---|---|
| Specialty | Radiation Oncology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/24/2006 |
Hospital and facility affiliations
Facilities where John Chinault, 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.
Faith Regional Health Services
★★★☆☆ 3/5
Norfolk, NE
Acute Care Hospitals
CMS CCN: 280125
Radiation Oncology Specialists OF Central Virginia PLC
Fredericksburg, VA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 John Chinault, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$115
Largest payer
BIOPROTECT MEDICAL, INC.
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.
Brand vs generic prescribing mix · Above average
John Chinault, M.D. - brand share 25.0%
Radiation Oncology Physician average
25% brand-name claims vs 75% generic, on 56 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.
56
Total Claims
$936
Total Drug Cost
27
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 58
- Total Day Supply
- 1,411
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $386
- Generic Drug Cost
- $550
Patient Demographics
- Average Patient Age
- 73.3 years
- Avg HCC Risk Score
- 1.72
- Gender Split
- 44% female / 56% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What John Chinault, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Silver Sulfadiazine
Silver Sulfadiazine
12 claims
- Tamsulosin Hcl
Tamsulosin Hcl
12 claims
- Terazosin Hcl
Terazosin Hcl
12 claims
| Drug | Claims |
|---|---|
| Silver Sulfadiazine | 12 |
| Tamsulosin Hcl | 12 |
| Terazosin Hcl | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Radiation Oncology Physician Overview
How John Chinault, 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
John Chinault, M.D.'s 56 claims are below the specialty average of 186.
Nearby Radiation Oncology Physician Providers in Virginia
Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as Chinault.
Dr. Chike Abana
MD, PHD
Norfolk, VA
Dr. Olubunmi Abayomi
M.D.
Richmond, VA
Dr. Harold Agbahiwe
M.D.
Fairfax, VA
Dr. Sanjeev Aggarwal
MD
Gainesville, VA
Dr. M Moinuddin Ali
MD
Richmond, VA
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 Virginia 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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Virginia
Frequently Asked Questions
What is John Chinault, M.D.'s specialty? ▼
John Chinault, M.D. specializes in Radiation Oncology Physician and practices in Fredericksburg, Virginia. Credentials: M.D..
How much does John Chinault, M.D. prescribe under Medicare Part D? ▼
In 2023, John Chinault, M.D. wrote 56 Medicare Part D claims totaling $936 in drug costs for 27 beneficiaries.
Where is John Chinault, M.D. located? ▼
John Chinault, M.D. is located at 6105 HEALTH CENTER LN, Fredericksburg, VA, 22407. Phone: (540) 786-5262.
What is John Chinault, M.D.'s NPI number? ▼
John Chinault, M.D.'s National Provider Identifier (NPI) is 1235195736, issued on 04/24/2006.
Does John Chinault, M.D. prescribe more brand-name or generic drugs? ▼
John Chinault, M.D.'s prescribing is 25% brand-name and 75% generic drugs by claim count, with $386 in brand drug costs.
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.
What drugs does John Chinault, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, John Chinault, M.D.'s most frequently prescribed drugs include Silver Sulfadiazine, Tamsulosin Hcl, Terazosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Chinault, M.D. accept Medicare? ▼
John Chinault, M.D. appears in CMS Medicare data with 56 Part D claims and 27 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Chinault, M.D.'s credentials? ▼
John Chinault, M.D.'s NPI is 1235195736 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.