Douglas F. Zahler, O.D.
Optometrist · Canton, OH
Douglas F. Zahler, O.D. is an optometrist with a practice address in Canton, Ohio, and NPI 1568545424, issued on Oct 23, 2006. Check the license (Ohio 3447/T320, as entered in NPPES) with the Ohio board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Douglas F. Zahler
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 3447/T320 OH
Self-reported in NPPES; status is on the state search - Practice location
- 4100 Belden Village St. N.W., Canton, OH 44718
- Phone
- (330) 492-9502
- Enumerated
- Oct 23, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (330) 494-5691
- Medicaid ID
- 0426935 OH
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,443 in Ohio → Look up another NPI →
Verify Douglas F. Zahler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Ohio board licenses this profession
Search for license 3447/T320Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average optometrist in 2024
36 Medicare Part D claims for 21 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.
Most prescribed
- Azelastine Hcl12 claims
- Neomycin-Polymyxin-Dexameth12 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.
Douglas F. Zahler among 2,443 optometrist records in Ohio
Douglas F. Zahler, O.D. is one of 2,443 optometrist records with a practice address in Ohio. 71% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 54% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2007 · 70% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in Ohio
There are 2,443 optometrist records in Ohio.
All 2,443 in Ohio → Every provider in Canton → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Charles Belles, OD OPTOMETRISTCanton, OH 447181063566420
- Nathan Borntrager, O.DCanton, OH 447181356570691
- Steven Manello, ODCanton, OH 447181386613453
- Jeffrey McLeod, O.D.Canton, OH 447181982602132
- Joel Riley, O.D.Canton, OH 447181568490738
- Mary Roth, O.D.Canton, OH 447181912065160
- Darla Sawicki, O.D.Canton, OH 447181902015639
- Adam Schmidt, ODCanton, OH 447181831331818
Common questions
What is Douglas F. Zahler, O.D.'s NPI number?
Douglas F. Zahler, O.D.'s National Provider Identifier (NPI) is 1568545424, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas F. Zahler, O.D. located?
The NPPES record lists a practice address at 4100 Belden Village St. N.W., Canton, OH, 44718. Phone: (330) 492-9502. Providers update this record themselves, so call before visiting.
How can I verify Douglas F. Zahler, O.D.'s license?
NPPES lists Ohio license number 3447/T320, as entered by the provider. Search the Ohio board that licenses this profession; the NPPES record confirms identity only.
How much does Douglas F. Zahler, O.D. prescribe under Medicare Part D?
In 2024, Douglas F. Zahler, O.D. had 36 Medicare Part D claims for 21 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.