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Dr. William Michael Barreto, M.D.

Pain Medicine (Physical Medicine & Rehabilitation) Physician in Torrance, CA · enumerated 2007.

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

National Provider Identifier

1053526285

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Registry record

Entity type Individual (Type 1)
Name Dr. William Michael Barreto
Credential M.D.
Sex Male
Practice address 23530 Hawthorne Blvd Ste 290, Torrance, CA, 90505
Phone (424) 903-7007
Fax (424) 903-7009
Enumeration date May 11, 2007
Last updated in NPPES Apr 3, 2024

Taxonomy & licenses

2081H0002X Hospice and Palliative Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License A91430 (CA) Secondary
2081P2900X Pain Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License A91430 (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

Where does William Barreto practice?
The practice location on file with NPPES is in Torrance, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Barreto?
The National Provider Identifier (NPI) for William Barreto is 1053526285, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-03.