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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Arthur N Donaldson M D Inc

Ambulatory Surgical Clinic/Center in Sonora, CA · enumerated 2007 · authorized official Gerard Ardron, President.

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

National Provider Identifier

1558497263

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Registry record

Entity type Organization (Type 2)
Legal business name Arthur N Donaldson M D Inc
Other name <Unavail>
Parent organization Arthur N Donaldson M D Inc
Practice address 940 Sylva Ln, Suite G, Sonora, CA, 95370
Phone (209) 532-0340
Fax (209) 532-1687
Enumeration date Feb 26, 2007
Last updated in NPPES Mar 5, 2014

Taxonomy & classification

261QA1903X Ambulatory Surgical Clinic/Center Ambulatory Health Care Facilities · License 030000368 (CA) Primary

Authorized official

Name Gerard Ardron
Title President
Phone (209) 532-0340

Other identifiers

Identifier Type State Issuer
490000762 Other CA RAILROAD MEDICARE
SUR51077F Medicaid CA -
ZZZ16244Z Other CA BLUE SHIELD
551077F Other CA BLUE CROSS

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2014-03-05. Verify at npiregistry.cms.hhs.gov.
Where is Arthur N Donaldson M D Inc located?
The practice location on file with NPPES is in Sonora, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-05.