Provider Profile
William Sigmund, OD
Unclaimed ProfileAbout 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.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Contact Information
- (636) 272-1444
- Email not available
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. Guide.md cannot book appointments or pass on messages — please call the office directly.
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
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.