Calvin Williams MD
About this NPIWhat this record shows.
NPI 1326085465 is registered to Calvin Williams MD, a Anesthesiology practising at 11133 Dunn Rd in Saint Louis, Missouri. Anesthesiology is the medical specialty concerned with the perioperative care of patients before, during, and after surgery, including pain management. Calvin Williams MD has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Your brand here.
Medicare enrollment
This provider holds 2 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
- I20040909001195AnesthesiologyMO
- I20071001000739AnesthesiologyIL
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 Calvin Williams MD accepts. To confirm in-network status with your specific health plan, contact Calvin Williams MD directly at (314) 653-5744.
Frequently asked
Yes. NPI 1326085465 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Anesthesiology is the medical specialty concerned with the perioperative care of patients before, during, and after surgery, including pain management.
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) 653-5744.
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. Calvin Williams MD is a Type-1 individual NPI.