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Edit this profileAt a glance
- 1140 Tom Ginnever Ave, O Fallon, MO 63366
About Dr. Sigmund
William Sigmund, OD is an optometrist practicing in O Fallon, MO. William trained at University of Missouri St Louis - School of Optometry, graduating in 2025. This provider record is associated with NPI 1477449726.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (636) 272-1444
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
1140 TOM GINNEVER AVE
O Fallon, MO 63366
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other optometrists at this location 1
Same specialty, same street address — most likely the same department or group.
Other optometrists in O Fallon 8
Same specialty, same city.
Trained at University of Missouri St Louis - School of Optometry 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2025 at University of Missouri St Louis - School of Optometry 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Sigmund's specialty?
Dr. Sigmund is an optometrist in O Fallon, MO. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Dr. Sigmund?
Dr. Sigmund is listed at 1140 Tom Ginnever Ave, O Fallon, MO 63366. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Sigmund?
The number on file is (636) 272-1444. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Sigmund's NPI number?
Dr. Sigmund's National Provider Identifier is 1477449726. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Sigmund's medical education?
Dr. Sigmund attended University of Missouri St Louis - School of Optometry, graduating in 2025. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Sigmund been practicing?
Dr. Sigmund has 1 year experience. Calculated from a graduation year of 2025, reported in the CMS National Downloadable File.
CMS public data
Has Dr. Sigmund confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Sigmund. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.