Arthur N Donaldson M D
Arthur N Donaldson M D holds 5 active organization NPIs in the federal registry, with practice locations in 2 California cities. Each location can bill under its own NPI.
Search the organization with your city to find the NPI for the location you visit or bill.
Find a location's NPISonora has the most NPIs, 3
Source: CMS NPPES monthly file of Aug 9, 2026, organization NPIs by practice city.
Most NPIs were issued in 2006 and 2007
Source: CMS NPPES, enumeration dates.
3 NPIs were issued in 2007 alone, more than in any other year.
Sonora locations
The city with the most Arthur N Donaldson M D NPIs. The full list of all 5 follows.
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1538232525 | 940 SYLVA LN SUITE G, Sonora | Eyewear Supplier | Nov 16, 2006 |
| 1558497263 | 940 SYLVA LN SUITE G, Sonora | Ambulatory Surgical Clinic/Center | Feb 26, 2007 |
| 1497882914 | 940 SYLVA LN STE.G, Sonora | Ophthalmology Physician | Feb 28, 2007 |
All 5 locations, by city
| NPI | Location | Primary taxonomy | Issued |
|---|---|---|---|
| 1295899482 | 595 STANISLAUS AVE. SUITE A, Angels Camp | Eyewear Supplier | Dec 21, 2006 |
| 1942337746 | 595 STANISLAUS AVE STE.A, Angels Camp | Ophthalmology Physician | Feb 27, 2007 |
| 1538232525 | 940 SYLVA LN SUITE G, Sonora | Eyewear Supplier | Nov 16, 2006 |
| 1558497263 | 940 SYLVA LN SUITE G, Sonora | Ambulatory Surgical Clinic/Center | Feb 26, 2007 |
| 1497882914 | 940 SYLVA LN STE.G, Sonora | Ophthalmology Physician | Feb 28, 2007 |
Checking an organization
- Match the NPI to the exact location you will visit or bill; each location can have its own.
- Confirm the business entity with the secretary of state.
- Check the HHS-OIG exclusion list for the organization and its owners.
- Verify each clinician you will see on their own record and with the state license search.
Common questions
Why does Arthur N Donaldson M D have 5 NPIs?
An organization may obtain more than one Type 2 NPI, for example for separate locations or units that bill on their own. Arthur N Donaldson M D's NPIs list practice locations in 2 cities.
Is an organization NPI a license?
No. An NPI identifies who bills. Facilities and the clinicians who work there are licensed separately by the state.
Source: CMS National Plan and Provider Enumeration System (NPPES), monthly file of Aug 9, 2026 (NPPES files on CMS.gov). An NPI identifies who bills; it is not a license.