James Roy Knowles, M.D.
Ophthalmology Physician · Beavercreek, OH
James Roy Knowles, M.D. is an ophthalmology physician with a practice address in Beavercreek, Ohio, and NPI 1053306001, issued on Sep 15, 2005. Check the license (Ohio 35-08-5811-K, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- James Roy Knowles
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 35-08-5811-K OH
42080 TN
Self-reported in NPPES; status is on the state search - Practice location
- 4235 Indian Ripple RD, Beavercreek, OH 45440
- Phone
- (937) 427-2020
- Enumerated
- Sep 15, 2005
- Record last updated
- Feb 8, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (937) 429-1144
- Medicaid IDs
- 3000265 TN
2574478 OH - Medicare enrollment
- Enrolled (PECOS I20050721000193); accepts Medicare assignment
- Medical or professional school
- Mayo Medical School, 1984
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 751 in Ohio → Look up another NPI →
Also registered at 4235 Indian Ripple RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelley Basinger, O.D.Optometrist1376545905
- Brian Stahl, M.D.Ophthalmology Physician1942202700
Verify James Roy Knowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35-08-5811-KCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average ophthalmology physician in 2024
2,062 Medicare Part D claims for 670 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims. 13 claims were for opioids.
Most prescribed
- Ketorolac Tromethamine447 claims
- Prednisolone Acetate428 claims
- Moxifloxacin344 claims
- Latanoprost337 claims
- Brimonidine Tartrate146 claims
- Gatifloxacin73 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 MIPS final score for 2023 (Medicare payment program): 42.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $15.80
1 payment: food and beverage; the largest payer was Johnson & Johnson Surgical Vision, 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.
Bills Medicare through one group practice
- Stahl Vision IncBeavercreek, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Roy Knowles among 751 ophthalmology physician records in Ohio
James Roy Knowles, M.D. is one of 751 ophthalmology physician records with a practice address in Ohio. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 75% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1984 · median 2002 among the 495 with a school on file
- Record last updated2008 · 62% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Ohio
There are 751 ophthalmology physician records in Ohio.
All 751 in Ohio → Every provider in Beavercreek → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Tyler BergerBeavercreek, OH 454401437646700
- Jennifer Shade, M.D.Beavercreek, OH 454401801028600
- Brian Stahl, M.D.Beavercreek, OH 454401942202700
- Mary Weimer, M.D.Beavercreek, OH 454401205256708
- Adam Altman, M.D.Wright Pat, OH 454331891173373
- Nicholas Dudenhoefer, MDWright Patterson Afb, OH 454331891428306
- John Gillis, M.D.Wright Patterson Afb, OH 454331083970628
- Leo Hurley, M.D.Wright Patterson, OH 454331578548640
Common questions
What is James Roy Knowles, M.D.'s NPI number?
James Roy Knowles, M.D.'s National Provider Identifier (NPI) is 1053306001, issued on Sep 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James Roy Knowles, M.D. located?
The NPPES record lists a practice address at 4235 Indian Ripple RD, Beavercreek, OH, 45440. Phone: (937) 427-2020. Providers update this record themselves, so call before visiting.
How can I verify James Roy Knowles, M.D.'s license?
NPPES lists Ohio license number 35-08-5811-K, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James Roy Knowles, M.D. prescribe under Medicare Part D?
In 2024, James Roy Knowles, M.D. had 2,062 Medicare Part D claims for 670 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is James Roy Knowles, M.D.'s MIPS final score?
The 2023 MIPS final score is 42.8 of 100. 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.