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

Individual provider Obstetrics & Gynecology Physician · NPI 1821063686

William J Koch, MD is an Obstetrics & Gynecology Physician in Eureka, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2773 Harris St Ste A
Eureka, CA 95503-4866
Phone: (707) 444-9664
Fax: (707) 444-8747
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence G36829 (CA)

Record details

NPI number1821063686
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 22, 2006
Last updated in NPPESFebruary 12, 2016
Mailing addressPo Box 496084, Redding, CA 96049-6084

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