William Spear, M.D.
NPI 1811085889 · Clinical Cardiac Electrophysiology Physician · Evergreen Park, IL
Enrolled with Medicare as Practitioner - Cardiac Electrophysiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Spear, M.D. is a Clinical Cardiac Electrophysiology Physician provider in Evergreen Park, IL (NPI 1811085889).
Provider details
- NPI number
- 1811085889
- Entity type
- Individual
- Primary specialty
- Clinical Cardiac Electrophysiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-110866 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
6,319 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 1,193 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 956 | $132 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 378 | $90 |
| Evaluation of Cardiac Rhythm Monitor System, Remote Up to 30 Days93298 | 300 | $65 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 282 | $119 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System Or Implantable Defibrillator System, Remote Up to 90 Days |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 690 | 166 |
| Metoprolol Succinate | 664 | 205 |
| Flecainide Acetate | 442 | 134 |
| Losartan Potassium | 275 | 88 |
| Furosemide | 270 | 79 |
| Rivaroxabanbrand: Xarelto | 215 | 54 |
| Carvedilol | 170 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$30,671 across 111 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (3)
- 3545 W 95th StEvergreen Park, IL 60805Phone: (708) 346-5562
- 5151 W 95th St Fl Ths2Oak Lawn, IL 60453-6460Phone: (708) 346-5562Fax: (708) 346-5562
- 11800 Southwest HwyPalos Heights, IL 60463-1029Phone: (708) 346-5562
Registry dates
- Enumerated
- 2006-10-11
- Last updated
- 2021-12-20
- Certified
- 2021-12-20
Frequently asked questions
- What is William Spear's NPI number?
- William Spear's National Provider Identifier (NPI) is 1811085889, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Spear's specialty?
- William Spear is listed in the NPPES registry with a primary specialty of Clinical Cardiac Electrophysiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Spear located?
- William Spear's practice location on file with NPPES is 3545 W 95th St, Evergreen Park, IL 60805.
- What is William Spear's phone number?
- The practice phone number listed in the NPPES registry for William Spear is (708) 346-5562.
- Does William Spear accept Medicare?
- William Spear is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Spear's NPI active?
- Yes — William Spear's NPI (1811085889) is active in the NPPES registry as of the last update on 2021-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.