Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joshua Hernandez Buck, MD

Q: What is the NPI number for Joshua Buck?

The National Provider Identifier (NPI) for Joshua Buck is 1548581945, a Type 1 (individual) record in the CMS NPPES registry.

Neurology Physician in Seattle, WA · enumerated 2010.

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

National Provider Identifier

1548581945

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Registry record

Entity type Individual (Type 1)

Name Joshua Hernandez Buck

Credential MD

Sex Male

Practice address 550 17th Ave Ste 400, Seattle, WA, 98122

Phone (206) 320-3494

Fax (206) 386-2845

Enumeration date Jun 20, 2010

Last updated in NPPES Jun 29, 2018

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License MD60659933 (WA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Joshua Buck practice?

The practice location on file with NPPES is in Seattle, WA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Joshua Buck?

The National Provider Identifier (NPI) for Joshua Buck is 1548581945, 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 2018-06-29.