Gretchen Koller DO
About this NPIWhat this record shows.
NPI 1821771536 is registered to Gretchen Koller DO, a Neurological Surgery Physician practising at 16001 W 9 Mile Rd in Southfield, Michigan. Neurological Surgery Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Gretchen Koller DO 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.
Order and Referring Only
- I20240713000119NeurosurgeryMI
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 Gretchen Koller DO accepts. To confirm in-network status with your specific health plan, contact Gretchen Koller DO directly at (248) 849-3403.
Frequently asked
Yes. NPI 1821771536 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Neurological Surgery 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 (248) 849-3403.
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. Gretchen Koller DO is a Type-1 individual NPI.