Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Bradford H Hack, M.D.

Orthopaedic Surgery Physician in Arcadia, CA · enumerated 2005.

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

National Provider Identifier

1154312536

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Registry record

Entity type Individual (Type 1)

Name Dr. Bradford H Hack

Credential M.D.

Sex Male

Practice address 301 W Huntington Dr, Suite 408, Arcadia, CA, 91007

Phone (626) 821-0707

Fax (626) 821-0239

Enumeration date Nov 3, 2005

Last updated in NPPES Jan 10, 2014

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License G46616 (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
FC012Z	Other	CO	MEDICARE
P00951196	Other	CA	MEDICARE RAIL ROAD
1154312536	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

What specialty is Bradford Hack?

Bradford Hack is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-10.