Charles Willey, MD
NPI 1811996028 · Specialist · Saint Louis, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Willey, MD is a Specialist provider in Saint Louis, MO (NPI 1811996028).
Provider details
- NPI number
- 1811996028
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 13351 (MO)
Specialties & taxonomies
Other Service Providers
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
745 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 196 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 161 | $123 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 105 | $87 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 103 | $174 |
| Urinalysis, Manual Test81002 | 73 | $3 |
| Prolonged Office Or Other Outpatient Evaluation and Management Service(s) Beyond the Maximum Required Time of the Primary Procedure Which Has Been Selected Using Total Time on the Date of the Primary Service; Each Additional 15 Minutes By the Physician Or |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 128 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 449 | 136 |
| Lisinopril | 309 | 91 |
| Mirtazapine | 299 | 111 |
| Levothyroxine Sodium | 249 | 72 |
| Losartan Potassium | 244 | 70 |
| Apixabanbrand: Eliquis | 211 | 45 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 across 1 record (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
- 2005-07-19
- Last updated
- 2010-07-15
Frequently asked questions
- What is Charles Willey's NPI number?
- Charles Willey's National Provider Identifier (NPI) is 1811996028, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Willey's specialty?
- Charles Willey is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Charles Willey located?
- Charles Willey's practice location on file with NPPES is 9915 Kennerly Rd, Saint Louis, MO 63128-2703.
- What is Charles Willey's phone number?
- The practice phone number listed in the NPPES registry for Charles Willey is (314) 843-4794.
- Does Charles Willey accept Medicare?
- Charles Willey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Willey's NPI active?
- Yes — Charles Willey's NPI (1811996028) is active in the NPPES registry as of the last update on 2010-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.