Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Arthur Norton Donaldson III, M.D.

General Practice Physician in San Diego, CA · enumerated 2007.

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

National Provider Identifier

1578688461

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Arthur Norton Donaldson III

Credential M.D.

Sex Male

Practice address 700 W Harbor Dr Unit 2601, San Diego, CA, 92101

Phone (619) 961-6654

Enumeration date Mar 20, 2007

Last updated in NPPES Feb 22, 2023

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G20752 (CA) Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License G20752 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
942593611	Other	CA	FEIN
110900	Other	CA	EYEMED
1299310001	Other	CA	DMERC SONORA
00G207250	Medicaid	CA	-
1299310002	Other	CA	DMERC ANGELS CAMP
180011028	Other	CA	RAILROAD MEDICARE

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Arthur Donaldson?

Arthur Donaldson is registered in NPPES with the primary taxonomy of General Practice Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-02-22.