Dr. James Roy Knowles, MD
- Medicare services, 2024
- 2,143
- Medicare patients, 2024
- 636
- Part D claims, 2024
- 2,062
- MIPS score, 2024
- 22
- Industry payments
- $286
- Practice address
- 4235 Indian Ripple Road, Suite 110, Dayton, OH 45440
- Practice phone
- Call (937) 427-7800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Eye Laser & Surgery Center
Surgery Center - Medicare-Certified · Dayton, Ohio
Find Dr. Knowles' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. James Roy Knowles is an ophthalmologist in Dayton, Ohio
Dr. Knowles practices at Eye Laser & Surgery Center in Dayton, Ohio.
Dr. Knowles' NPI, 1053306001, was assigned on September 15, 2005. Dr. Knowles graduated from Mayo Medical School in 1984. Dr. Knowles holds Ohio license 35-08-5811-K.
- NPI
- 1053306001NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719914704
- NPI enumeration date
- September 15, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (937) 427-7800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James Roy Knowles practices at Eye Laser & Surgery Center in Dayton, Ohio
Dr. Knowles' primary practice is Eye Laser & Surgery Center, at 4235 Indian Ripple Road, Suite 110, Dayton, OH 45440. The practice phone is (937) 427-7800.
- Eye Laser & Surgery Center4235 Indian Ripple Road, Suite 110, Dayton, OH 45440Phone(937) 427-7800
Source: Dmand AI Affiliation Data
Dr. James Roy Knowles is affiliated with 2 sites of care and 1 medical group
Dr. Knowles' primary practice is Eye Laser & Surgery Center in Dayton, Ohio. Dmand AI also links Dr. Knowles to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. James Roy Knowles' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Knowles practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Eye Laser & Surgery Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. James Roy Knowles is one of 658 ophthalmologists in Ohio
Ophthalmology is Dr. Knowles' primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Knowles is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Knowles' licenses on file in 2 states: Ohio and Tennessee.
Specialties and state licenses
- Ophthalmology, OhioPrimary
- Tennessee license
Ophthalmologists near Dr. Knowles
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. James Roy Knowles billed Medicare for 2,143 services in 2024
CMS data shows 2,143 Medicare services from Dr. Knowles across 12 procedure codes in 2024, for 636 Medicare patients. Medicare paid $244,952 for them.
Dr. Knowles' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 1,7322024: 1,50913%
- Surgery
- 2023: 4892024: 5012%
- Lab and pathology
- 2023: 1472024: 9833%
- Office and hospital visits
- 2023: 342024: 353%
Where Dr. Knowles' Medicare services took place, 2024
- In an office1,64277%
- In a facility50123%
Dr. Knowles compared with the Ohio median for ophthalmologists, 2024
- Dr. Knowles
- Ohio median
- Medicare services
- 2,143vs 1,18581% above
- Medicare patients
- 636vs 47733% above
- Part D claims
- 1,974vs 6413.1 times
Medians across 673 ophthalmologists in Ohio with Dmand AI profiles that report each measure.
Dr. Knowles' most billed Medicare procedure codes, 2024
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. Knowles and other ophthalmologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James Roy Knowles treated 636 Medicare patients in 2024, average age 76
CMS counts 636 Medicare patients who saw Dr. Knowles in 2024. The largest group is 75 to 84, with 292 patients. 75% of them have high cholesterol, and 68% have high blood pressure. 2% are also on Medicaid. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Knowles' median patient age at 72, with 54% women.
Dr. Knowles' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Knowles' Medicare patients by sex, 2024
- Women35456%
- Men28244%
Chronic conditions among Dr. Knowles' Medicare patients, 2024
- High cholesterol75%
- High blood pressure68%
- Arthritis46%
- Diabetes31%
- Ischemic heart disease27%
- Chronic kidney disease21%
- Anxiety18%
- Mood disorders17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Knowles' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. James Roy Knowles wrote 2,062 Medicare Part D claims in 2024
In 2024, Dr. Knowles wrote 2,062 Medicare Part D claims for 670 patients. 64% of them were for generic drugs. CMS names the drug for 1,974 of them, across 15 drugs with 11 or more claims each, at $53,419 in total drug cost. In 2023, CMS named 1,481 claims across 13 drugs.
Dr. Knowles' Part D claims by kind of drug, 2024
- Generic1,327 claims64%
- Brand-name735 claims36%
Dr. Knowles' 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.
Drug classes CMS tracks in Dr. Knowles' Part D claims, 2024
- Opioids1%13 of 2,062 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,4812024: 1,97433%
Drugs named by CMS: 15 in 2024, 13 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
Dr. James Roy Knowles scored 22 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 22 out of 100 for Dr. Knowles for performance year 2024, reported individually. Dr. Knowles accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 448 procedures of cataract surgery by Dr. Knowles, more than 94% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Knowles' MIPS scores, performance year 2024
- 22of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 73of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Knowles ranks in Medicare procedure volume
- Cataract surgery
- 94th percentile448 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. James Roy Knowles received $286 in industry payments from 2017 to 2025
CMS Open Payments shows 10 general payments to Dr. Knowles from 4 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $202.
General payments to Dr. Knowles by program year, 2017 to 2025
Companies that paid Dr. Knowles the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. James Roy Knowles graduated from Mayo Medical School
Dr. Knowles graduated from Mayo Medical School in 1984.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Sources for Dr. James Roy Knowles'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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. James Roy Knowles
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. James Roy Knowles' NPI number?
Dr. James Roy Knowles' NPI number is 1053306001. It was assigned on September 15, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. James Roy Knowles?
Dr. James Roy Knowles is an ophthalmologist in Dayton, Ohio. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. James Roy Knowles practice?
Dr. Knowles practices at 4235 Indian Ripple Road, Suite 110, Dayton, OH 45440. Dr. Knowles' primary practice is Eye Laser & Surgery Center in Dayton, Ohio. Dmand AI also links Dr. Knowles to 1 group practice or clinic and 1 medical group.
What is Dr. James Roy Knowles' office phone number?
The practice phone on file for Dr. Knowles is (937) 427-7800.
What is Dr. James Roy Knowles' medical license number?
Dr. Knowles holds Ohio license 35-08-5811-K, one of the licenses on file in 2 states.
Which states has Dr. James Roy Knowles been licensed in?
Dmand AI has state licenses on file for Dr. Knowles in Ohio and Tennessee.
Does Dr. James Roy Knowles accept Medicare?
Yes. CMS data shows Dr. Knowles billed Medicare for 2,143 services in 2024, and Dr. Knowles accepts Medicare assignment.
What is Dr. James Roy Knowles' MIPS score?
Dr. Knowles' MIPS final score for performance year 2024 is 22 out of 100, reported individually.
How many Medicare patients does Dr. James Roy Knowles see?
CMS counts 636 Medicare patients who saw Dr. Knowles in 2024, with an average age of 76.
Is Dr. James Roy Knowles board certified?
Yes. Dr. Knowles is board certified in ophthalmology by the American Board of Ophthalmology.
Show 5 more questionsShow fewer questions
What services does Dr. James Roy Knowles bill to Medicare?
In 2024, Dr. Knowles' most billed Medicare services were eye exam or test (92014), eye exam or test (92136) and surgery: eye (66984).
Where did Dr. James Roy Knowles go to medical school?
Dr. Knowles graduated from Mayo Medical School in 1984.
What drugs does Dr. James Roy Knowles prescribe most?
In 2024 Medicare Part D data, Dr. Knowles' most prescribed drugs by claims were Ketorolac Tromethamine, Prednisolone Acetate and Moxifloxacin.
Has Dr. James Roy Knowles received payments from drug or device companies?
CMS Open Payments shows $286 in general payments to Dr. Knowles from 4 companies from 2017 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. James Roy Knowles been practicing?
Dr. Knowles graduated from medical school in 1984, 42 years ago.
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