Dr. William Geimeier M.D.
About this NPIWhat this record shows.
NPI 1003848474 is registered to Dr. William Geimeier M.D., a Allergy Physician practising at 179 W Chestnut Hill Rd, Suite 1 in Newark, Delaware. Allergy Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. William Geimeier M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Other
- 397142· Issued by MAMSI
- 0078796000· Issued by AMERIHEALTH
- 511251· Issued by AETNA
Medicaid
Source: NPPES public registry.
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 Dr. William Geimeier M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. William Geimeier M.D. directly at (302) 453-1343.
Frequently asked
Yes. NPI 1003848474 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Allergy 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 (302) 453-1343.
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. Dr. William Geimeier M.D. is a Type-1 individual NPI.