CHERYL G WILLIAMS DO PC
CHERYL G WILLIAMS DO PC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1649332156, based in Mount Vernon, MO. The organization lists 2 taxonomy classifications, with Rural Health Clinic/Center recorded as primary.
Getting there
The practice address on file is 1011 S EAST ST, Mount Vernon, MO 65712. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 113916 | MO | Rural Health Clinic/Center primary |
This provider holds licence 113916 issued in MO. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 1951353192
Enrolled in Medicare 2 times, across 1 state:
| State | Enrollment ID | Provider type |
|---|---|---|
| Missouri | O20050215001046 | Part B Supplier - Clinic/group Practice |
| Missouri | O20050830000585 | Part A Provider - Rural Health Clinic |
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. There are 2 separate enrolment records. Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Rural Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QR1300X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 261Q00000X | Clinic/Center | — | — | |
| 261QR1300X | Rural Health Clinic/Center Rural Health | 113916 | MO | primary |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1649332156 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Dec 14, 2006 |
| Last updated | Jan 6, 2026 |
| Status | Active |
| Practice address |
1011 S EAST ST Mount Vernon, MO 65712 (417) 466-7191 Fax (417) 466-3876 |
| Other names |
Mt.vernon Clinic Former Legal Name |
| Other identifiers |
590665907
· Medicaid (MO) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 6 | 4 | 9 | 3 | 3 | 2 | 1 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 8 | 9 | 6 | 3 | 4 | 1 | 1 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.