# William C Leach, JR., MD

Source: https://ourhealthnetwork.com/doctor/william-leach-md-1558399279
NPI: 1558399279
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

William C Leach, JR., MD is a obstetrics/gynecology based in Crystal Lake, IL practicing at Mercy Health System Corporation with NPI 1558399279.

## Profile

- Primary specialty: Obstetrics/Gynecology
- Credential: MD
- Gender: Male
- Graduation year: 2002
- NPI: 1558399279 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1558399279))

## Practice and contact

- Practice name: Mercy Health System Corporation
- Address: 875 S Route 31, Crystal Lake, IL, 600148190
- Phone: (779) 220-5500
- Group practice size: 750 members

## Insurance accepted (9 networks)

This provider is in network with the following insurance carriers, based on federal Transparency in Coverage filings and FHIR provider directories:

- [HCSC: BCBS Illinois](https://ourhealthnetwork.com/insurance/hcsc-bcbs-illinois) — 55 plans
- [Cigna](https://ourhealthnetwork.com/insurance/cigna) — 17 plans
- [UnitedHealthcare](https://ourhealthnetwork.com/insurance/unitedhealthcare) — 12 plans
- [Humana](https://ourhealthnetwork.com/insurance/humana) — 7 plans
- [Aetna](https://ourhealthnetwork.com/insurance/aetna) — 5 plans
- [Molina Healthcare](https://ourhealthnetwork.com/insurance/molina-healthcare) — 3 plans
- [UMR](https://ourhealthnetwork.com/insurance/umr) — 3 plans
- [Oxford Health Plans (UHC)](https://ourhealthnetwork.com/insurance/oxford-health-plans-uhc) — 2 plans
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan

To verify a specific plan covers William C Leach, JR., use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1558399279).

## Related on OurHealthNetwork

- [More Obstetrics/Gynecology doctors in CRYSTAL LAKE, IL](https://ourhealthnetwork.com/obstetrics-gynecology/il/crystal-lake)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1558399279)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)