James William Mershon, OD
Optometrist · Caldwell, OH
James William Mershon, OD is an optometrist with a practice address in Caldwell, Ohio, and NPI 1043390867, issued on Oct 16, 2006. Check the license (Ohio 3554T948, as entered in NPPES) with the Ohio board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James William Mershon
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 3554T948 OH
Self-reported in NPPES; status is on the state search - Practice location
- 402 Cumberland St, Caldwell, OH 43724
- Phone
- (740) 732-4620
- Enumerated
- Oct 16, 2006
- Record last updated
- May 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (740) 732-7179
- Medicaid ID
- 0464162 OH
- Entity
- Type 1 · individual
8 nearest optometrist records → All 2,443 in Ohio → Look up another NPI →
Also registered at 402 Cumberland St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary RexOptician1659440253
Verify James William Mershon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Ohio board licenses this profession
Search for license 3554T948Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average optometrist in 2024
11 Medicare Part D claims, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.
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.
James William Mershon among 2,443 optometrist records in Ohio
James William Mershon, OD 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 updated2011 · 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).
2 optometrist records list a practice address in Caldwell
They are 2 of the 96 NPPES records with a practice address in Caldwell, and 2,443 optometrist records in Ohio.
All 2,443 in Ohio → Every provider in Caldwell → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Robert Rudge, O.D.Caldwell, OH 437241578515920
- Aaron Doudna, ODCambridge, OH 437251689604324
- William Green, O.D.Cambridge, OH 437251689603045
- Nicholas Taflan, O.D.Cambridge, OH 437251851739783
- Justin Wehr, ODCambridge, OH 437251891975975
- Douglas Huff, O. D.Barnesville, OH 437131730184656
- Zachary Leach, ODBarnesville, OH 437131720608342
- Melissa Leach, O.D.Barnesville, OH 437131033183645
Common questions
What is James William Mershon, OD's NPI number?
James William Mershon, OD's National Provider Identifier (NPI) is 1043390867, issued on Oct 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James William Mershon, OD located?
The NPPES record lists a practice address at 402 Cumberland St, Caldwell, OH, 43724. Phone: (740) 732-4620. Providers update this record themselves, so call before visiting.
How can I verify James William Mershon, OD's license?
NPPES lists Ohio license number 3554T948, as entered by the provider. Search the Ohio board that licenses this profession; the NPPES record confirms identity only.
How much does James William Mershon, OD prescribe under Medicare Part D?
In 2024, James William Mershon, OD had 11 Medicare Part D claims; 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.