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Arnold A Weekes, MD

Anesthesiology Physician in Antioch, CA · enumerated 2006.

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

National Provider Identifier

1023057833

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Registry record

Entity type Individual (Type 1)
Name Arnold A Weekes
Credential MD
Sex Male
Practice address 4053 Lone Tree Way Ste 201, Antioch, CA, 94531
Phone (925) 756-3400
Fax (925) 756-3410
Enumeration date Jun 6, 2006
Last updated in NPPES Jul 31, 2019

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 775521 (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
A88042 Other CA STATE MEDICAL LICENSE
RHC00166977 Other CA FLOUROSCOPY CERTIFCATION
1023057833 Medicaid CA -

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

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 Arnold Weekes?
Arnold Weekes is registered in NPPES with the primary taxonomy of Anesthesiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-31.