William SpearM.D.
Cardiac Electrophysiology·Evergreen Park, IL
William Spear, M.D. is a Cardiac Electrophysiology provider in Evergreen Park, IL, as of July 2026.
- NPI1811085889
- Registered2006
- Class of2001
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
William Spear at a glance
- Provider
- William Spear
- Credential
- M.D.
- Specialty
- Cardiac Electrophysiology
- Procedures
- Cardiac Electrophysiology CPT codes
- Location
- Evergreen Park, IL
- Medical school
- University of Miami, LM Miller School of Medicine
- Graduated
- 2001
- NPI registered
- 2006
- NPI
- 1811085889
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does William Spear practice?
William Spear, M.D. is based in Evergreen Park, IL. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is William Spear's NPI number?
William Spear's National Provider Identifier (NPI) is 1811085889, registered in 2006. Specialty on record: Cardiac Electrophysiology; credential M.D.
Where did William Spear go to medical school?
William Spear, M.D. attended University of Miami, LM Miller School of Medicine, graduating in 2001.
How many Cardiac Electrophysiology providers in Illinois work at ambulatory surgery centers?
14 Cardiac Electrophysiology surgeons and proceduralists in Illinois are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, William Spear among them. The Illinois Cardiac Electrophysiology directory lists each one by city with credential, NPI, and center affiliations.
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