Katherine Macmillan M.D.
About this NPIWhat this record shows.
NPI 1780117416 is registered to Katherine Macmillan M.D., a Gastroenterology practising at 741 Se Main St in Simpsonville, South Carolina. Gastroenterology is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Katherine Macmillan M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2017.
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
- I20191105003173Internal MedicineGA
- I20240711002081GastroenterologyAZ
- I20250616002806GastroenterologySC
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 Katherine Macmillan M.D. accepts. To confirm in-network status with your specific health plan, contact Katherine Macmillan M.D. directly at (864) 522-8420.
Frequently asked
Yes. NPI 1780117416 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 (864) 522-8420.
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. Katherine Macmillan M.D. is a Type-1 individual NPI.