William Schwer, M.D.
NPI 1811945389 · Family Medicine Physician · Worth, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Schwer, M.D. is a Family Medicine Physician provider in Worth, IL (NPI 1811945389).
Provider details
- NPI number
- 1811945389
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
519 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 166 | $94 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 133 | $131 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 126 | $9 |
| Hemoglobin A1c Level83036 | 68 | $10 |
| Administration of Influenza Virus VaccineG0008 | 26 | $33 |
Typical Medicare-allowed amounts for these services range $9–$131 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 75 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 282 | 103 |
| Levothyroxine Sodium | 209 | 64 |
| Metformin Hcl | 183 | 60 |
| Amlodipine Besylate | 179 | 62 |
| Omeprazole | 161 | 50 |
| Lisinopril | 155 | 52 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Schwer's NPI number?
- William Schwer's National Provider Identifier (NPI) is 1811945389, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Schwer's specialty?
- William Schwer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Schwer located?
- William Schwer's practice location on file with NPPES is 7000 W 111th St, Worth, IL 60482-1851.
- What is William Schwer's phone number?
- The practice phone number listed in the NPPES registry for William Schwer is (708) 660-3200.
- Does William Schwer accept Medicare?
- William Schwer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Schwer's NPI active?
- Yes — William Schwer's NPI (1811945389) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.