Robert B. Knox, M.D.
Ophthalmology Physician · Fort Smith, AR
Robert B. Knox, M.D. is an ophthalmology physician with a practice address in Fort Smith, Arkansas, and NPI 1467424374, issued on Feb 3, 2006. Check the license (Arkansas C7590, as entered in NPPES) on the Arkansas State Medical Board; the Medicare figures below come from public CMS files.
- Name
- Robert B. Knox
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- C7590 AR
Self-reported in NPPES; status is on the state search - Practice location
- 7901 Dallas St, Fort Smith, AR 72903
- Phone
- (479) 782-8892
- Enumerated
- Feb 3, 2006
- Record last updated
- Dec 17, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (479) 782-8840
- Medicaid IDs
- 120963001 AR
100164530B OK - Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 145 in Arkansas → Look up another NPI →
Also registered at 7901 Dallas St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Blake Geren, M.D.Ophthalmology Physician1063448405
- Claire Price, M.D.Ophthalmology Physician1841262730
- Morgan Yandell, ODOptometrist1366127318
Verify Robert B. Knox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArkansas State Medical Board
Search for license C7590Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average ophthalmology physician in 2024
34 Medicare Part D claims for 26 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D.
Most prescribed
- Latanoprost15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 88.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $245.09
12 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Robert B. Knox among 145 ophthalmology physician records in Arkansas
Robert B. Knox, M.D. is one of 145 ophthalmology physician records with a practice address in Arkansas. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 35% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2019 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Arkansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Arkansas
There are 145 ophthalmology physician records in Arkansas.
All 145 in Arkansas → Every provider in Fort Smith → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Randy Ennen, M.D.Fort Smith, AR 729031124089222
- Blake Geren, M.D.Fort Smith, AR 729031063448405
- Christopher Greer, DOFort Smith, AR 729031457379083
- Claire Price, M.D.Fort Smith, AR 729031841262730
- Christopher Rodriguez, MDFort Smith, AR 729031942573639
- Chetan Soni, MDFort Smith, AR 729031598876526
- Robert Hughes, M.D.Fort Smith, AR 729011366584047
- Randel Saylor, MDFort Smith, AR 729011952373540
Common questions
What is Robert B. Knox, M.D.'s NPI number?
Robert B. Knox, M.D.'s National Provider Identifier (NPI) is 1467424374, issued on Feb 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert B. Knox, M.D. located?
The NPPES record lists a practice address at 7901 Dallas St, Fort Smith, AR, 72903. Phone: (479) 782-8892. Providers update this record themselves, so call before visiting.
How can I verify Robert B. Knox, M.D.'s license?
NPPES lists Arkansas license number C7590, as entered by the provider. Search the Arkansas State Medical Board at https://armedicalboard.adh.arkansas.gov/public/verify/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert B. Knox, M.D. prescribe under Medicare Part D?
In 2024, Robert B. Knox, M.D. had 34 Medicare Part D claims for 26 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Robert B. Knox, M.D.'s MIPS final score?
The 2023 MIPS final score is 88.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.