Dr. Michael Ansstas M.D.
About this NPIWhat this record shows.
NPI 1851658728 is registered to Dr. Michael Ansstas M.D., a Gastroenterology practising at 11155 Dunn Rd Ste 309e in Saint Louis, Missouri. Gastroenterology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Michael Ansstas M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2012.
Your brand here.
Medicare enrollment
This provider holds 3 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20170630001859Internal MedicineMO
- I20200827002746GastroenterologyIL
- I20230628002123GastroenterologyGA
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Dr. Michael Ansstas M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Michael Ansstas M.D. directly at (314) 953-8799.
Frequently asked
Yes. NPI 1851658728 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Gastroenterology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (314) 953-8799.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Dr. Michael Ansstas M.D. is a Type-1 individual NPI.