Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Barbara N Johnston, M.D.

Pediatrics Physician in Chicago, IL · enumerated 2005.

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

National Provider Identifier

1356335103

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Barbara N Johnston

Credential M.D.

Sex Female

Practice address 1460 N Halsted St, Suite 402, Chicago, IL, 60642

Phone (312) 279-8900

Fax (312) 981-6312

Enumeration date Sep 8, 2005

Last updated in NPPES Sep 16, 2011

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 036078176 (IL) 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

Is NPI 1356335103 active?

Yes, as of the latest NPPES snapshot, NPI 1356335103 is active (record last updated 2011-09-16).

How do I verify Barbara Johnston's NPI record?

Cross-check NPI 1356335103 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-16.