NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Brit S Shackley, M.D.

Anatomic Pathology & Clinical Pathology Physician in Pasadena, CA · enumerated 2010.

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

National Provider Identifier

1336460435

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Registry record

Entity type Individual (Type 1)
Name Dr. Brit S Shackley
Credential M.D.
Sex Female
Practice address Pasadena, CA, 91105
Phone (626) 397-8616
Fax (626) 397-2156
Enumeration date Jun 13, 2010
Last updated in NPPES Mar 29, 2013

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License A107373 (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 Brit Shackley practice?
The practice location on file with NPPES is in Pasadena, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Brit Shackley?
The National Provider Identifier (NPI) for Brit Shackley is 1336460435, 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 2013-03-29.