John Robert Hammerer, O.D.
Optometrist · Coxsackie, NY
John Robert Hammerer, O.D. is an optometrist with a practice address in Coxsackie, New York, and NPI 1942498654, issued on Oct 9, 2007. Check the license (New York VUT-4868, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Robert Hammerer
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- VUT-4868 NY
Self-reported in NPPES; status is on the state search - Practice location
- 10A Ely St, Coxsackie, NY 12051
- Phone
- (518) 731-9405
- Enumerated
- Oct 9, 2007
- Record last updated
- Sep 4, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20041222000323); accepts Medicare assignment
- Medical or professional school
- Southern College Of Optometry, 1982
- Entity
- Type 1 · individual
Verify John Robert Hammerer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license VUT-4868Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average optometrist in 2024
289 Medicare Part D claims for 40 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Latanoprost192 claims
- Timolol Maleate25 claims
- Brimonidine Tartrate21 claims
- Dorzolamide Hcl19 claims
- Dorzolamide-Timolol18 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.
1 optometrist records list a practice address in Coxsackie
They are 1 of the 32 NPPES records with a practice address in Coxsackie, and 3,535 optometrist records in New York.
Other optometrist records in New York
- Annmary Abadir, O.D.Harrison, NY1497797914
- Edita Abazaga, ODSyracuse, NY1477126985
- Mirjeta Abazaga, O.D.Syracuse, NY1518344365
- Syeda Abbas, ODWhite Plains, NY1043724263
- Thomas Abbott, O.D.Horseheads, NY1619176492
- Elias Abboud, O.D.Syracuse, NY1043291222
- Nouralison Abdella, ODNew York, NY1487403614
- Susan Abdenour Young, O.D.Brooklyn, NY1225260706
- Hilla Abel, ODNew York, NY1972696615
- Elana Abilevitz, ODNew York, NY1790947372
Common questions
What is John Robert Hammerer, O.D.'s NPI number?
John Robert Hammerer, O.D.'s National Provider Identifier (NPI) is 1942498654, issued on Oct 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Robert Hammerer, O.D. located?
The NPPES record lists a practice address at 10A Ely St, Coxsackie, NY, 12051. Phone: (518) 731-9405. Providers update this record themselves, so call before visiting.
How can I verify John Robert Hammerer, O.D.'s license?
NPPES lists New York license number VUT-4868, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does John Robert Hammerer, O.D. prescribe under Medicare Part D?
In 2024, John Robert Hammerer, O.D. had 289 Medicare Part D claims for 40 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.