Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Joel Justin Baranski, M.D.

Nephrology Physician in San Diego, CA · enumerated 2005.

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

National Provider Identifier

1548265234

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Registry record

Entity type Individual (Type 1)

Name Dr. Joel Justin Baranski

Credential M.D.

Sex Male

Practice address 4060 4th Ave, Ste 220, San Diego, CA, 92103

Phone (619) 299-2350

Fax (619) 297-8379

Enumeration date Jun 17, 2005

Last updated in NPPES Jun 28, 2022

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License G67559 (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
WG675590	Other	CA	SO. CALIFORNIA PTAN
00G675590	Medicaid	CA	-
DX113Y	Other	CA	NO. CALIFORNIA PTAN

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

What is the NPI number for Joel Baranski?

The National Provider Identifier (NPI) for Joel Baranski is 1548265234, a Type 1 (individual) record in the CMS NPPES registry.

Where does Joel Baranski practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-28.