NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Robert M. Craig, M.D.

Hepatology Physician in Chicago, IL · enumerated 2005 · authorized official Robert Craig, Physician Owner.

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

National Provider Identifier

1821074790

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Robert M. Craig, M.D.
Practice address 233 E Erie St, Suite 206, Chicago, IL, 60611
Fax (312) 503-1881
Enumeration date Dec 21, 2005
Last updated in NPPES Sep 11, 2025

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Secondary
207RI0008X Hepatology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Robert Craig
Title Physician Owner

Other identifiers

Identifier Type State Issuer
21623019 Other IL BLUE CROSS BLUE SHIELD

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 a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Robert M. Craig, M.D.?
Robert M. Craig, M.D. is registered in NPPES as a Hepatology Physician (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.