Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William C Leach Jr., DO

Individual provider Obstetrics & Gynecology Physician · NPI 1558399279

Dr. William C Leach Jr., DO is an Obstetrics/Gynecology in Manitowoc, Wisconsin. Qualified in 2002, 24 years ago. Practices with Mercy Health System Corporation, a 751-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
24
Licensed in
WI
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

600 York St
Manitowoc, WI 54220-6825
Phone: (920) 320-8742
Fax: (920) 320-8775
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 700 S Park St, Madison, WI 53715-1830 — (608) 251-6100

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 46781 (WI)

Record details

NPI number1558399279
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 29, 2006
Last updated in NPPESApril 20, 2023
Certification dateApril 20, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolOTHER
Graduated 2002 (24 years in practice)
Group practice Mercy Health System Corporation — 751 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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