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

Dr. Geoffrey William Horn, DO

Individual provider Diagnostic Radiology Physician · NPI 1013117977

Dr. Geoffrey William Horn, DO is a Diagnostic Radiology in Saint Helena, California. Qualified in 2004, 22 years ago. Practices with Willits Hospital Inc, a 67-clinician group and accepts Medicare assignment. Licensed in California, Oklahoma and Tennessee.

Years since qualifying
22
Licensed in
CA, OK, TN
In the registry since
2007
Specialties on file
3
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

10 Woodland Rd
Saint Helena, CA 94574-9554
Phone: (707) 963-6430
Fax: (707) 256-3508
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 20A11701 (CA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 4369 (OK)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 2063 (TN)

Record details

NPI number1013117977
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 19, 2007
Last updated in NPPESApril 25, 2012
Mailing addressPo Box 3222, Napa, CA 94558-0293

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Willits Hospital Inc — 67 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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