Penny Williams MD
About this NPIWhat this record shows.
NPI 1588649453 is registered to Penny Williams MD, a Critical Care Medicine (Internal Medicine) Physician practising at 3330 N 2nd St Ste 300 in Phoenix, Arizona. Critical Care Medicine (Internal Medicine) Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Penny Williams MD has been enumerated in the National Provider Identifier (NPI) registry since 2005.
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.
Medicaid
- 420935AZ
Source: NPPES public registry.
Medicare enrollment
This provider holds 8 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
- I20040423000013Pulmonary DiseaseAZ
- I20200831001102Critical Care (Intensivists)WI
- I20220516000179Pulmonary DiseaseOR
- I20220928002064Internal MedicineTN
- I20230918001504Emergency MedicineGA
- I20241003001033Pulmonary DiseaseSC
- I20250304001878Critical Care (Intensivists)OK
- I20260306000682Critical Care (Intensivists)CO
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 Penny Williams MD accepts. To confirm in-network status with your specific health plan, contact Penny Williams MD directly at (602) 261-7830.
Frequently asked
Yes. NPI 1588649453 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Critical Care Medicine (Internal 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 (602) 261-7830.
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. Penny Williams MD is a Type-1 individual NPI.