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Dr. James Roy Doyle, MD

Orthopaedic Hand Surgery Physician in St Helena, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1811085756

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Registry record

Entity type Individual (Type 1)
Name Dr. James Roy Doyle
Credential MD
Sex Male
Practice address 1030 Main St, Ste 206, St Helena, CA, 94574
Phone (707) 968-0800
Fax (707) 968-0847
Enumeration date Oct 10, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207XS0106X Orthopaedic Hand Surgery Physician Allopathic & Osteopathic Physicians · License A18570 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for James Doyle?
The National Provider Identifier (NPI) for James Doyle is 1811085756, a Type 1 (individual) record in the CMS NPPES registry.
Where does James Doyle practice?
The practice location on file with NPPES is in St Helena, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.