Gregory Sigler Mdcm, Frcsc
About this NPIWhat this record shows.
NPI 1437832938 is registered to Gregory Sigler Mdcm, Frcsc, a Surgical Oncology Physician practising at 912 S Washington Ave in Saginaw, Michigan. Surgical Oncology Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Gregory Sigler Mdcm, Frcsc has been enumerated in the National Provider Identifier (NPI) registry since 2023.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment 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
- I20251029000755Surgical OncologyMI
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 Gregory Sigler Mdcm, Frcsc accepts. To confirm in-network status with your specific health plan, contact Gregory Sigler Mdcm, Frcsc directly at (989) 790-1001.
Frequently asked
Yes. NPI 1437832938 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Surgical Oncology Physician 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 (989) 790-1001.
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. Gregory Sigler Mdcm, Frcsc is a Type-1 individual NPI.