Gary John Giesler, O.D.
Optometrist · Hermann, MO
Gary John Giesler, O.D. is an optometrist with a practice address in Hermann, Missouri, and NPI 1396834552, issued on Oct 12, 2006. Check the license (Missouri TO2265, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gary John Giesler
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- TO2265 MO
Self-reported in NPPES; status is on the state search - Practice location
- 228 East First, Hermann, MO 65041
- Phone
- (573) 486-3355
- Enumerated
- Oct 12, 2006
- Record last updated
- Nov 9, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (573) 486-3355
- Medicare enrollment
- Enrolled (PECOS I20120530000023); accepts Medicare assignment
- Medical or professional school
- University Of Houston - College Of Optometry, 1975
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,242 in Missouri → Look up another NPI →
Verify Gary John Giesler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license TO2265Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average optometrist in 2024
69 Medicare Part D claims for 20 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims.
Most prescribed
- Timolol Maleate14 claims
- Dorzolamide-Timolol12 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.
Gary John Giesler among 1,242 optometrist records in Missouri
Gary John Giesler, O.D. is one of 1,242 optometrist records with a practice address in Missouri. 73% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 52% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1975 · median 2007 among the 768 with a school on file
- Record last updated2010 · 67% 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 Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 optometrist record lists a practice address in Hermann
They are 1 of the 57 NPPES records with a practice address in Hermann, and 1,242 optometrist records in Missouri.
All 1,242 in Missouri → Every provider in Hermann → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Devin ColemanLaurie, MO 650381457159790
- John Gazaway, ODLaurie, MO 650381114011913
- Brian Eveland, ODLake Ozark, MO 650491265449920
- Kelly Frisella, O.D.Lake Ozark, MO 650491750315065
- Lisa Groves, ODLake Ozark, MO 650491437182284
- Jerry King, O.D.Eldon, MO 650261346205689
- Maisie Bess, ODCamdenton, MO 650201962329177
- Matthew Bowman, O.D.Camdenton, MO 650201548232481
Common questions
What is Gary John Giesler, O.D.'s NPI number?
Gary John Giesler, O.D.'s National Provider Identifier (NPI) is 1396834552, issued on Oct 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary John Giesler, O.D. located?
The NPPES record lists a practice address at 228 East First, Hermann, MO, 65041. Phone: (573) 486-3355. Providers update this record themselves, so call before visiting.
How can I verify Gary John Giesler, O.D.'s license?
NPPES lists Missouri license number TO2265, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.
How much does Gary John Giesler, O.D. prescribe under Medicare Part D?
In 2024, Gary John Giesler, O.D. had 69 Medicare Part D claims for 20 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.