F Karl Gregorius M.D., Inc.
About this NPIWhat this record shows.
NPI 1720399389 is registered to F Karl Gregorius M.D., Inc., a healthcare organisation classified as "Neurological Surgery Physician" and located at 2209 N California St in Stockton, California. The organisation's authorised official is Frederick Gregorius. The organisation has been enumerated in the NPI registry since 2010.
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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 F Karl Gregorius M.D., Inc. accepts. To confirm in-network status with your specific health plan, contact F Karl Gregorius M.D., Inc. directly at (209) 943-0305.
Frequently asked
Yes. NPI 1720399389 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 (209) 943-0305.
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. F Karl Gregorius M.D., Inc. is a Type-2 organisational NPI.