William Lanker, MD
NPI 1568429009 · Emergency Medicine Physician · Monticello, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Lanker, MD is a Emergency Medicine Physician provider in Monticello, IL (NPI 1568429009).
Provider details
- NPI number
- 1568429009
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036069050 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 44 | 23 |
| Levothyroxine Sodium | 42 | 17 |
| Amlodipine Besylate | 32 | 14 |
| Metoprolol Succinate | 29 | — |
| Potassium Chloride | 28 | — |
| Lisinopril | 22 | 14 |
| Omeprazole | 20 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-27
- Last updated
- 2015-04-23
Frequently asked questions
- What is William Lanker's NPI number?
- William Lanker's National Provider Identifier (NPI) is 1568429009, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Lanker's specialty?
- William Lanker is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Lanker located?
- William Lanker's practice location on file with NPPES is 1002 Medical Center Dr, Monticello, IL 61856-2116.
- What is William Lanker's phone number?
- The practice phone number listed in the NPPES registry for William Lanker is (217) 762-2518.
- Does William Lanker accept Medicare?
- William Lanker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Lanker's NPI active?
- Yes — William Lanker's NPI (1568429009) is active in the NPPES registry as of the last update on 2015-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.