John Doyle Knouse, O.D.
Optometrist · Dublin, PA
John Doyle Knouse, O.D. is an optometrist with a practice address in Dublin, Pennsylvania, and NPI 1851399281, issued on Jul 10, 2005. Check the license (Pennsylvania OEG000936, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Doyle Knouse
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OEG000936 PA
Self-reported in NPPES; status is on the state search - Practice location
- 174 N Main St, Dublin, PA 18917
- Phone
- (215) 249-3937
- Enumerated
- Jul 10, 2005
- Record last updated
- Nov 29, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040119000222); accepts Medicare assignment
- Medical or professional school
- Pennsylvania College Of Optometry, 1988
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,640 in Pennsylvania → Look up another NPI →
Also registered at 174 N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joy Davis, CRNPAdult Health Nurse Practitioner1205954732
- Katharina Dubyk, ODOptometrist1730813288
- Andrew TaberOptometrist1396634242
- Nicole Takita, ODOptometrist1114540762
- James Ward, DCChiropractor1811096910
Verify John Doyle Knouse in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license OEG000936Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average optometrist in 2024
99 Medicare Part D claims for 37 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Most prescribed
- Latanoprost39 claims
- Lumigan13 claims
- Timolol Maleate11 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.
Industry payments in 2024: $196.17
11 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 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
- Wisber Eye Care PCDublin, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Doyle Knouse among 2,640 optometrist records in Pennsylvania
John Doyle Knouse, O.D. is one of 2,640 optometrist records with a practice address in Pennsylvania. 72% 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, 86% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1988 · median 2004 among the 1,588 with a school on file
- Record last updated2011 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 optometrist records list a practice address in Dublin
They are 5 of the 26 NPPES records with a practice address in Dublin, and 2,640 optometrist records in Pennsylvania.
All 2,640 in Pennsylvania → Every provider in Dublin → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Katharina Dubyk, ODDublin, PA 189171730813288
- Andrew TaberDublin, PA 189171396634242
- Nicole Takita, ODDublin, PA 189171114540762
- Erin Wisber, O.D.Dublin, PA 189171669602801
- Paul Forrest, O.DColmar, PA 189151386674042
- Melissa Richard, O.D.Chalfont, PA 189141487676631
- Thanh-Thao Thieu, O.D.Chalfont, PA 189141588634497
- Dennis Kwiatkowski, ODJamison, PA 189291790899847
Common questions
What is John Doyle Knouse, O.D.'s NPI number?
John Doyle Knouse, O.D.'s National Provider Identifier (NPI) is 1851399281, issued on Jul 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Doyle Knouse, O.D. located?
The NPPES record lists a practice address at 174 N Main St, Dublin, PA, 18917. Phone: (215) 249-3937. Providers update this record themselves, so call before visiting.
How can I verify John Doyle Knouse, O.D.'s license?
NPPES lists Pennsylvania license number OEG000936, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does John Doyle Knouse, O.D. prescribe under Medicare Part D?
In 2024, John Doyle Knouse, O.D. had 99 Medicare Part D claims for 37 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.
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.