Denise Fitzsimon MD
Also known as
- Formerly known asFitzsimon-Williams, Denise I.
Source: NPPES public registry.
About this NPIWhat this record shows.
NPI 1861525636 is registered to Denise Fitzsimon MD, a Pediatrics practising at 300 University Blvd in Round Rock, Texas. Pediatrics is the medical specialty focused on the health of infants, children, and adolescents through age 21. Denise Fitzsimon MD has been enumerated in the National Provider Identifier (NPI) registry since 2007.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Source: NPPES public registry.
Medicare enrollment
This provider holds 2 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
- I20111222000304Pediatric MedicineOR
- I20240320003203Pediatric MedicineCA
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 Denise Fitzsimon MD accepts. To confirm in-network status with your specific health plan, contact Denise Fitzsimon MD directly at (512) 509-0200.
Frequently asked
Yes. NPI 1861525636 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Pediatrics is the medical specialty focused on the health of infants, children, and adolescents through age 21.
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 (512) 509-0200.
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. Denise Fitzsimon MD is a Type-1 individual NPI.