James A. Knupp, MD
Ophthalmology Physician · Toledo, OH
James A. Knupp, MD is an ophthalmology physician with a practice address in Toledo, Ohio, and NPI 1548211774, issued on May 12, 2006. Check the license (Ohio 35042466, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- James A. Knupp
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- 35042466 OH
036075866 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Regency CT Ste 100, Toledo, OH 43623
- Phone
- (419) 882-0588
- Enumerated
- May 12, 2006
- Record last updated
- Nov 19, 2025
- Fax
- (419) 885-3070
- Medicaid IDs
- 0086973 OH
036075866 IL - Medicare enrollment
- Enrolled (PECOS I20130628000504); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 1978
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 751 in Ohio → Look up another NPI →
Also registered at 1000 Regency CT Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Elchinger, ODOptometrist1629505581
- Sami Khan, MDOphthalmology Physician1619400900
- Jeffrey Moon, MDOphthalmology Physician1073006318
Verify James A. Knupp in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35042466Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average ophthalmology physician in 2024
608 Medicare Part D claims for 173 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Latanoprost184 claims
- Brimonidine Tartrate66 claims
- Timolol Maleate61 claims
- Dorzolamide-Timolol48 claims
- Erythromycin48 claims
- Prednisolone Acetate22 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): 97.1 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: $73.37
3 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.
Bills Medicare through one group practice
- Associated Eye Care IncToledo, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James A. Knupp among 751 ophthalmology physician records in Ohio
James A. Knupp, MD 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 2006, is newer than 25% of them.
- NPI issued2006 · 25% of these records are older, 42% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1978 · median 2002 among the 495 with a school on file
- Record last updated2025 · 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 Toledo → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Sameer Al-Shweiki, M.D.Toledo, OH 436231508275835
- Ronald Brown, MDToledo, OH 436231386648970
- May ElrashedyToledo, OH 436231336612548
- Michael Janowicz, M.D.Toledo, OH 436231285632430
- Sami Khan, MDToledo, OH 436231619400900
- Karl Luketic, M.D.Toledo, OH 436231669477998
- Jeffrey Moon, MDToledo, OH 436231073006318
- Khalil Raffoul, M.D.Toledo, OH 436231407851736
Common questions
What is James A. Knupp, MD's NPI number?
James A. Knupp, MD's National Provider Identifier (NPI) is 1548211774, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James A. Knupp, MD located?
The NPPES record lists a practice address at 1000 Regency CT Ste 100, Toledo, OH, 43623. Phone: (419) 882-0588. Providers update this record themselves, so call before visiting.
How can I verify James A. Knupp, MD's license?
NPPES lists Ohio license number 35042466, 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 A. Knupp, MD prescribe under Medicare Part D?
In 2024, James A. Knupp, MD had 608 Medicare Part D claims for 173 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is James A. Knupp, MD's MIPS final score?
The 2023 MIPS final score is 97.1 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.