NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Barbara J. Lounsbury, MD

Developmental - Behavioral Pediatrics Physician in San Diego, CA · enumerated 2007.

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

National Provider Identifier

1871641837

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Barbara J. Lounsbury
Credential MD
Sex Female
Practice address 4647 Zion Ave, San Diego, CA, 92120
Phone (619) 528-5000
Enumeration date Jan 8, 2007
Last updated in NPPES Sep 23, 2008

Taxonomy & licenses

2080P0006X Developmental - Behavioral Pediatrics Physician Allopathic & Osteopathic Physicians · License C42688 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Barbara Lounsbury practice?
The practice location on file with NPPES is in San Diego, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Barbara Lounsbury?
The National Provider Identifier (NPI) for Barbara Lounsbury is 1871641837, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-23.