Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William Sigmund, OD

Individual provider Optometrist · NPI 1477449726

William Sigmund, OD is an Optometry in O Fallon, Missouri. Graduated from University of Missouri St Louis - School of Optometry in 2025, 1 year ago. Practices with Iverson-Tomasino Eyecare Inc, a 4-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
1
Trained at
University of Missouri St Louis - School of Optometry
Licensed in
MO
In the registry since
2025
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

1140 Tom Ginnever Ave
O Fallon, MO 63366-4530
Phone: (636) 272-1444
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 2025022556 (MO)

Record details

NPI number1477449726
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorNo
NPI enumeratedJune 14, 2025
Last updated in NPPESJune 14, 2025
Certification dateJune 14, 2025
Mailing address1140 Tom Ginnever Ave, O Fallon, MO 63366-4530

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPTOMETRY
Medical schoolUNIVERSITY OF MISSOURI ST LOUIS - SCHOOL OF OPTOMETRY
Graduated 2025 (1 years in practice)
Group practice Iverson-Tomasino Eyecare Inc — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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