William Bartley, MD
NPI 1134112097 · Internal Medicine Physician · Alton, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Bartley, MD is a Internal Medicine Physician provider in Alton, IL (NPI 1134112097).
Provider details
- NPI number
- 1134112097
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036-071248 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
673 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 275 | $124 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 165 | $126 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 93 | $88 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 68 | $9 |
| Administration of Influenza Virus VaccineG0008 | 58 | $32 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 14 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 139 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 424 | 113 |
| Metoprolol Succinate | 364 | 89 |
| Amlodipine Besylate | 303 | 71 |
| Levothyroxine Sodium | 246 | 54 |
| Lisinopril | 241 | 70 |
| Metformin Hcl | 224 | 57 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$457 across 16 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
Registry dates
- Enumerated
- 2005-08-25
- Last updated
- 2025-09-19
- Certified
- 2025-09-19
Frequently asked questions
- What is William Bartley's NPI number?
- William Bartley's National Provider Identifier (NPI) is 1134112097, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Bartley's specialty?
- William Bartley is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Bartley located?
- William Bartley's practice location on file with NPPES is 1 Professional Dr, Alton, IL 62002-5068.
- What is William Bartley's phone number?
- The practice phone number listed in the NPPES registry for William Bartley is (618) 463-8626.
- Does William Bartley accept Medicare?
- William Bartley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Bartley's NPI active?
- Yes — William Bartley's NPI (1134112097) is active in the NPPES registry as of the last update on 2025-09-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.