Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joseph J. Pachorek, M.D.

Internal Medicine Physician in Pasadena, CA · enumerated 2006.

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

National Provider Identifier

1881622843

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Registry record

Entity type Individual (Type 1)

Name Joseph J. Pachorek

Credential M.D.

Sex Male

Practice address 630 S Raymond Ave, Suite 320, Pasadena, CA, 91105

Phone (626) 795-4223

Enumeration date Jun 29, 2006

Last updated in NPPES Oct 22, 2008

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G61061 (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
110063420	Other	CA	RAILROAD MEDICARE

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 Joseph Pachorek 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 Joseph Pachorek?

The National Provider Identifier (NPI) for Joseph Pachorek is 1881622843, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-22.