Dr. Robert B. Knox, MD
- Medicare services, 2023
- 812
- Part D claims, 2024
- 34
- Industry payments
- $1,485
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 7901 Dallas St, Fort Smith, AR 72903-4281
- Practice phone
- Call (479) 782-8892
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Eye Group - Fort Smith (7901 Dallas St)
Eye care practice · Fort Smith, Arkansas
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Dr. Robert B. Knox is an ophthalmologist in Fort Smith, Arkansas
Dr. Knox practices at Eye Group - Fort Smith (7901 Dallas St) in Fort Smith, Arkansas.
Dr. Knox's NPI, 1467424374, was assigned on February 3, 2006. Dr. Knox graduated from University of Texas Medical Branch at Galveston in 1987. Dr. Knox holds Arkansas license C7590.
- NPI
- 1467424374NPI Registry (opens in a new tab)
- NPI enumeration date
- February 3, 2006
- NPI status
- Active
- Practice phone
- (479) 782-8892
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert B. Knox practices at 2 locations in Fort Smith, Arkansas
Dr. Knox's primary practice is Eye Group - Fort Smith (7901 Dallas St), at 7901 Dallas St, Fort Smith, AR 72903-4281. The practice phone is (479) 782-8892. The NPI Registry lists Dr. Knox's practice address as 7920 Dallas St, Fort Smith, AR 72903.
- Eye Group - Fort Smith (7901 Dallas St)Primary7901 Dallas St, Fort Smith, AR 72903-4281Phone(479) 782-8892
- NPI Registry address7920 Dallas St, Fort Smith, AR 72903 · Sebastian CountyPhone(479) 782-8892
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Robert B. Knox is affiliated with 1 site of care and 1 medical group
Dr. Knox's primary practice is Eye Group - Fort Smith (7901 Dallas St) in Fort Smith, Arkansas. Dmand AI also links Dr. Knox to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Robert B. Knox's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knox practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Eye Group - Fort Smith (7901 Dallas St) | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert B. Knox is one of 118 ophthalmologists in Arkansas
Ophthalmology is Dr. Knox's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Knox is licensed in Arkansas.
Specialties and state licenses
- Ophthalmology, ArkansasPrimary
Ophthalmologists near Dr. Knox
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Robert B. Knox billed Medicare for 812 services in 2023
CMS data shows 812 Medicare services from Dr. Knox across 11 procedure codes in 2023. Medicare paid $38,665 for them.
Dr. Knox's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Tests and treatments
- 2022: 2,3062023: 61473%
- Office and hospital visits
- 2022: 6892023: 12981%
- Surgery
- 2022: 4172023: 5188%
- Imaging
- 2022: 2032023: 1891%
Where Dr. Knox's Medicare services took place, 2023
- In an office76194%
- In a facility516%
Dr. Knox compared with the Arkansas median for ophthalmologists, 2023
- Dr. Knox
- Arkansas median
- Medicare services
- 812vs 2,06661% below
- Part D claims
- 15vs 64698% below
Medians across 126 ophthalmologists in Arkansas with Dmand AI profiles that report each measure.
Dr. Knox's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Knox and other ophthalmologists in Arkansas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert B. Knox's patients have a median age of 77
Across all payers, Dmand AI patient panel data puts Dr. Knox's median patient age at 77, with 67% women.
Dr. Knox's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Robert B. Knox wrote 34 Medicare Part D claims in 2024
In 2024, Dr. Knox wrote 34 Medicare Part D claims for 26 patients. 74% of them were for generic drugs. CMS names the drug for 15 of them, across 1 drug with 11 or more claims each, at $149 in total drug cost. In 2023, CMS named 1,115 claims across 17 drugs.
Dr. Knox's Part D claims by kind of drug, 2024
- Generic25 claims74%
- Brand-name and other9 claims26%
Dr. Knox's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1152024: 1599%
Drugs named by CMS: 1 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Robert B. Knox received $1,485 in industry payments from 2016 to 2025
CMS Open Payments shows 81 general payments to Dr. Knox from 17 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Abbvie Inc. paid the most, $382.
General payments to Dr. Knox by program year, 2016 to 2025
General payments to Dr. Knox by kind, 2016 to 2025
- Food and beverage$1,40695%
- Entertainment$423%
- Education$383%
Companies that paid Dr. Knox the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert B. Knox graduated from University of Texas Medical Branch at Galveston
Dr. Knox graduated from University of Texas Medical Branch at Galveston in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert B. Knox's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Robert B. Knox
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What is Dr. Robert B. Knox's NPI number?
Dr. Robert B. Knox's NPI number is 1467424374. It was assigned on February 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert B. Knox?
Dr. Robert B. Knox is an ophthalmologist in Fort Smith, Arkansas. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Robert B. Knox practice?
Dr. Knox practices at 7901 Dallas St, Fort Smith, AR 72903-4281. Dr. Knox also practices at 7920 Dallas St, Fort Smith, AR 72903. Dr. Knox's primary practice is Eye Group - Fort Smith (7901 Dallas St) in Fort Smith, Arkansas. Dmand AI also links Dr. Knox to 1 medical group.
What is Dr. Robert B. Knox's office phone number?
The practice phone on file for Dr. Knox is (479) 782-8892.
What is Dr. Robert B. Knox's medical license number?
Dr. Knox holds Arkansas license C7590.
Does Dr. Robert B. Knox accept Medicare?
Yes. CMS data shows Dr. Knox billed Medicare for 812 services in 2023.
What services does Dr. Robert B. Knox bill to Medicare?
In 2023, Dr. Knox's most billed Medicare services were eye exam or test (92014), office visit, established patient (99213) and eye exam or test (92083).
Where did Dr. Robert B. Knox go to medical school?
Dr. Knox graduated from University of Texas Medical Branch at Galveston in 1987.
What drugs does Dr. Robert B. Knox prescribe most?
In 2024 Medicare Part D data, Dr. Knox's most prescribed drugs by claims were Latanoprost.
Has Dr. Robert B. Knox received payments from drug or device companies?
CMS Open Payments shows $1,485 in general payments to Dr. Knox from 17 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Robert B. Knox been practicing?
Dr. Knox graduated from medical school in 1987, 39 years ago.
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