Ursula Guillen M.D.
About this NPIWhat this record shows.
NPI 1154521383 is registered to Ursula Guillen M.D., a Neonatal-Perinatal Medicine Physician practising at 4745 Ogletown Stanton Rd Ste 217 in Newark, Delaware. Neonatal-Perinatal Medicine Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Ursula Guillen M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2007.
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
- I20250416003530Pediatric MedicineDE
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 Ursula Guillen M.D. accepts. To confirm in-network status with your specific health plan, contact Ursula Guillen M.D. directly at (302) 733-2374.
Frequently asked
Yes. NPI 1154521383 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Neonatal-Perinatal Medicine 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) 733-2374.
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. Ursula Guillen M.D. is a Type-1 individual NPI.