Robert Hogan Knox, M.D.
Ophthalmology Physician · Rogers, AR
Robert Hogan Knox, M.D. is an ophthalmology physician with a practice address in Rogers, Arkansas, and NPI 1790172666, issued on Apr 18, 2015. Check the license (Arkansas E-20385, as entered in NPPES) on the Arkansas State Medical Board; the Medicare figures below come from public CMS files.
- Name
- Robert Hogan Knox
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- E-20385 AR
Self-reported in NPPES; status is on the state search - Practice location
- 3737 W Walnut St, Rogers, AR 72756
- Phone
- (479) 246-1700
- Enumerated
- Apr 18, 2015
- Record last updated
- Jul 10, 2026
- Fax
- (479) 337-8416
- Medicare enrollment
- Enrolled (PECOS I20190809002774); accepts Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 145 in Arkansas → Look up another NPI →
Also registered at 3737 W Walnut St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ryan Bunch, O.D.Optometrist1306225214
- Noah Eichelberger, ODOptometrist1396664462
- Stephanie Moss, ODOptometrist1043747595
- Rebecca Simmons Brown, ODOptometrist1023897253
- Daniel Sines, M.D.Ophthalmology Physician1508028218
Verify Robert Hogan Knox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArkansas State Medical Board
Search for license E-20385Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.3 times the Medicare Part D claims of the average ophthalmology physician in 2024
8,117 Medicare Part D claims for 1,399 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Latanoprost2,726 claims
- Dorzolamide-Timolol1,842 claims
- Brimonidine Tartrate885 claims
- Prednisolone Acetate490 claims
- Timolol Maleate294 claims
- Dorzolamide Hcl274 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): 75.8 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: $485.09
11 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. 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.
Bills Medicare through one group practice
- Tvpg LLCHoover, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Hogan Knox among 145 ophthalmology physician records in Arkansas
Robert Hogan 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 2015, is newer than 89% of them.
- NPI issued2015 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2015 · median 2001 among the 89 with a school on file
- Record last updated2026 · 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 Rogers → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Charles Hof, M.D.Rogers, AR 727561427022532
- Daniel Sines, M.D.Rogers, AR 727561508028218
- Randall Cole, M.D.Rogers, AR 727571609840693
- Robert Jeffries, MDRogers, AR 727581740275775
- John Gillespie, MDRussellville, AR 728021366484479
- David Murphy, M.D.Russellville, AR 728021467568675
- John Billingsley, M.D.Fayetteville, AR 727041972569382
- Chad Betts, M.D.Fayetteville, AR 727031215971106
Common questions
What is Robert Hogan Knox, M.D.'s NPI number?
Robert Hogan Knox, M.D.'s National Provider Identifier (NPI) is 1790172666, issued on Apr 18, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Robert Hogan Knox, M.D. located?
The NPPES record lists a practice address at 3737 W Walnut St, Rogers, AR, 72756. Phone: (479) 246-1700. Providers update this record themselves, so call before visiting.
How can I verify Robert Hogan Knox, M.D.'s license?
NPPES lists Arkansas license number E-20385, 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 Hogan Knox, M.D. prescribe under Medicare Part D?
In 2024, Robert Hogan Knox, M.D. had 8,117 Medicare Part D claims for 1,399 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Robert Hogan Knox, M.D.'s MIPS final score?
The 2023 MIPS final score is 75.8 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.