NPI registry status
Active
2026 NPPES data Orthopaedic Surgery Physician NPI 1336159425 M.D.
Verify on CMS → Thomas Knox, M.D.
Orthopaedic Surgery Physician in Mountain Home, Arkansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 26,109 in Orthopaedic Surgery 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
790
Medicare Part D claims · 290 beneficiaries · Orthopaedic Surgery Physician avg: 344
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$103.24
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Thomas Knox, M.D. filed 790 Medicare Part D claims in 2024 as an Orthopaedic Surgery Physician in Mountain Home, Arkansas, prescribing 97% generic.
- 790
- Part D claims, 2024
- 97%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥70th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Thomas Knox, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1336159425), first enumerated 08/09/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 790 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$103.24 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Knox with other Orthopaedic Surgery Physician providers
Same primary specialty, same federal CMS NPPES roster.
Also enrolled in Arkansas
- Dr. Jesse Abeler, D.O. North Little Rock, AR
- Dr. John Akins, MD Mountian View, AR
- Dr. Joe Alberty, MD Fort Smith, AR
- Dr. Mark Allard, M.D. Springdale, AR
- Dr. James Allen, M.D. Batesville, AR
- Dr. Jeffery Angel, M.D. Batesville, AR
Other specialties in Mountain Home: Case Manager/Care Coordinator (116) · Day Training/Habilitation Specialist (75) · Counselor (58) · Family Nurse Practitioner (56)
CMS NPPES provider registry desk
NPI 1336159425 · Orthopaedic Surgery Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1336159425
- ENUM-LEGACY 2006
- TAX-MID 26K Orthopaedic Surgery
- RX-LIGHT 790
- BOOK-THIN 221 in Arkansas
- PHOTO-ENUM Carl Bechtold, M.D. · 2006
Thomas Knox, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
790 ≥ 70th percentile 70% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Thomas Knox, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Thomas Knox, M.D.?
Quality data not reportedPrimary specialty
Orthopaedic Surgery Physician
Medicare Part D claims
790 130% vs specialty avg
Specialty distribution in Arkansas
How Orthopaedic Surgery Physician compares to other specialties among Arkansas 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 Orthopaedic Surgery 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).
Practice Address
Provider Details
| NPI | 1336159425 |
|---|---|
| Specialty | Orthopaedic Surgery Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/09/2006 |
Hospital and facility affiliations
Facilities where Thomas Knox, 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.
Baxter County Regional Hospital Inc
Mountain Home, AR
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 Thomas Knox, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$103
Largest payer
Smith+Nephew, 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 · Generic-heavy
Thomas Knox, M.D. - brand share 3.0%
Orthopaedic Surgery Physician average
3% brand-name claims vs 97% generic, on 790 2024 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 2024.
790
Total Claims
$15K
Total Drug Cost
290
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 896
- Total Day Supply
- 14,785
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $7K
- Generic Drug Cost
- $8K
- Opioid Claims
- 369 (46.7% rate)
- Antibiotic Claims
- 83
Patient Demographics
- Average Patient Age
- 72.3 years
- Avg HCC Risk Score
- 1.00
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 32, 65-74: 144, 75-84: 98, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Thomas Knox, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
258 claims
- Meloxicam
Meloxicam
166 claims
- Celecoxib 79
Celecoxib
79 claims
- Tramadol Hcl 48
Tramadol Hcl
48 claims
- Oxycodone-Acetamin… 38
Oxycodone-Acetaminophen
38 claims
- Amoxicillin 34
Amoxicillin
34 claims
- Methylprednisolone 23
Methylprednisolone
23 claims
- Eliquis 21
Eliquis
21 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 258 |
| Meloxicam | 166 |
| Celecoxib | 79 |
| Tramadol Hcl | 48 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 38 |
| Amoxicillin | 34 |
| Methylprednisolone | 23 |
| Eliquis Apixaban | 21 |
| Hydromorphone Hcl | 19 |
| Cefadroxil | 16 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Orthopaedic Surgery Physician Overview
How Thomas Knox, M.D. fits within the Orthopaedic Surgery Physician landscape nationally.
26,109
Orthopaedic Surgery Physician Providers in US
56
States with Orthopaedic Surgery Physician
344
Avg Claims per Provider
Thomas Knox, M.D.'s 790 claims are above the specialty average of 344.
Nationwide Orthopaedic Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Knox, both outside Arkansas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Orthopaedic Surgery Physician Providers in Arkansas
Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as Knox.
One of 221 Orthopaedic Surgery Physician providers enrolled in Arkansas, 11 are shown on this page.
Dr. Ryan Anthony
MD
Little Rock, AR
Dr. Christopher Arnold
M.D.
Fayetteville, AR
Dr. James Aronson
MD
Little Rock, AR
Dr. Donald Bailey
M.D.
Springdale, AR
Dr. Mark Bailey
MD
Benton, AR
Compare Orthopaedic Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Thomas Knox, M.D.'s specialty? ▼
Thomas Knox, M.D. specializes in Orthopaedic Surgery Physician and practices in Mountain Home, Arkansas. Credentials: M.D..
How much does Thomas Knox, M.D. prescribe under Medicare Part D? ▼
In 2024, Thomas Knox, M.D. wrote 790 Medicare Part D claims totaling $15K in drug costs for 290 beneficiaries.
Where is Thomas Knox, M.D. located? ▼
Thomas Knox, M.D. is located at 3 MEDICAL PLZ, Mountain Home, AR, 72653. Phone: (870) 424-3400.
What is Thomas Knox, M.D.'s NPI number? ▼
Thomas Knox, M.D.'s National Provider Identifier (NPI) is 1336159425, issued on 08/09/2006.
Does Thomas Knox, M.D. prescribe more brand-name or generic drugs? ▼
Thomas Knox, M.D.'s prescribing is 3% brand-name and 97% generic drugs by claim count, with $7K in brand drug costs.
Does Thomas Knox, M.D. prescribe opioids? ▼
Yes, Thomas Knox, M.D. had 369 opioid claims in 2024 with an opioid prescribing rate of 46.7%.
How many Orthopaedic Surgery Physician providers are there in the US? ▼
There are 26,109 Orthopaedic Surgery Physician providers across 56 states in the US. The average Orthopaedic Surgery Physician provider writes 344 Medicare Part D claims per year.
What drugs does Thomas Knox, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Thomas Knox, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Meloxicam, Celecoxib. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thomas Knox, M.D. accept Medicare? ▼
Thomas Knox, M.D. appears in CMS Medicare data with 790 Part D claims and 290 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Knox, M.D.'s credentials? ▼
Thomas Knox, M.D.'s NPI is 1336159425 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.