William Sill, D.O.
NPI 1578630638 · Family Medicine Physician · Saint Peters, MO
William Sill, D.O. is a Family Medicine Physician provider in Saint Peters, MO (NPI 1578630638).
Provider details
- NPI number
- 1578630638
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 32792 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
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
- 2006-11-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Sill's NPI number?
- William Sill's National Provider Identifier (NPI) is 1578630638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Sill's specialty?
- William Sill is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Sill located?
- William Sill's practice location on file with NPPES is 6 Jungermann Cir, Saint Peters, MO 63376-1621.
- What is William Sill's phone number?
- The practice phone number listed in the NPPES registry for William Sill is (636) 916-9015.
- Is William Sill's NPI active?
- Yes — William Sill's NPI (1578630638) 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.