John Gerard Knuth, OD
Optometrist · Green Bay, WI
John Gerard Knuth, OD is an optometrist with a practice address in Green Bay, Wisconsin, and NPI 1396715173, issued on Jan 25, 2006. Check the license (Wisconsin 2308, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Gerard Knuth
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 2308 WI
Self-reported in NPPES; status is on the state search - Practice location
- 535 South Monroe Avenue, Green Bay, WI 54301
- Phone
- (920) 435-9511
- Enumerated
- Jan 25, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (920) 435-9383
- Medicaid ID
- 38581000 WI
- Medicare enrollment
- Enrolled (PECOS I20050805000050); accepts Medicare assignment
- Medical or professional school
- Illinois College Of Optometry At Chicago, 1989
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,161 in Wisconsin → Look up another NPI →
Verify John Gerard Knuth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 2308Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average optometrist in 2024
147 Medicare Part D claims for 45 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.
Most prescribed
- Latanoprost55 claims
- Restasis30 claims
- Timolol Maleate21 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.
Bills Medicare through one group practice
- Myeyedr Optometry OF Wisconsin LLCKenosha, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Gerard Knuth among 1,161 optometrist records in Wisconsin
John Gerard Knuth, OD is one of 1,161 optometrist records with a practice address in Wisconsin. 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 50% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1989 · median 2008 among the 752 with a school on file
- Record last updated2023 · 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 152W00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in Wisconsin
There are 1,161 optometrist records in Wisconsin.
All 1,161 in Wisconsin → Every provider in Green Bay → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Lynn Carli, ODGreen Bay, WI 543011184694861
- Glenn Carli, O.D.Green Bay, WI 543011619914181
- Ann Carli, O.D.Green Bay, WI 543011437191293
- Joshua Carli, ODGreen Bay, WI 543011235814906
- John Carli, ODGreen Bay, WI 543011174201966
- Tanya Gorder, ODGreen Bay, WI 543011689693921
- Mark Mancheski, O.D.Green Bay, WI 543011205929718
- Natalie Stankevych, O.D.Green Bay, WI 543011770628489
Common questions
What is John Gerard Knuth, OD's NPI number?
John Gerard Knuth, OD's National Provider Identifier (NPI) is 1396715173, issued on Jan 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Gerard Knuth, OD located?
The NPPES record lists a practice address at 535 South Monroe Avenue, Green Bay, WI, 54301. Phone: (920) 435-9511. Providers update this record themselves, so call before visiting.
How can I verify John Gerard Knuth, OD's license?
NPPES lists Wisconsin license number 2308, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does John Gerard Knuth, OD prescribe under Medicare Part D?
In 2024, John Gerard Knuth, OD had 147 Medicare Part D claims for 45 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.