Dr. William Mackin M.D.
About this NPIWhat this record shows.
NPI 1215924949 is registered to Dr. William Mackin M.D., a Cardiovascular Disease practising at 351 Delnor Dr, Suite 100 in Geneva, Illinois. Cardiology is a medical specialty focused on disorders of the heart and blood vessels, including coronary artery disease, heart failure, arrhythmias, and hypertension. Dr. William Mackin M.D. 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.
Other
- 206147058IL· Issued by MEDICARE PTAN (INDIVIDUAL)
- 206147IL· Issued by MEDICARE PTAN (GROUP)
Source: NPPES public registry.
Medicare enrollment
This provider holds 6 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
- I20040929000899Interventional CardiologyIL
- I20240905003573Cardiovascular Disease (Cardiology)MT
- I20241011003219Interventional CardiologyWI
- I20241126003939Interventional CardiologyWY
- I20250424001437Cardiovascular Disease (Cardiology)MI
- I20260220001440Interventional CardiologyKY
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 Dr. William Mackin M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. William Mackin M.D. directly at (630) 232-0280.
Frequently asked
Yes. NPI 1215924949 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Cardiology is a medical specialty focused on disorders of the heart and blood vessels, including coronary artery disease, heart failure, arrhythmias, and hypertension.
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 (630) 232-0280.
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 Mackin M.D. is a Type-1 individual NPI.