Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Jeffrey J Glass Mdsc

Q: What type of organization is Jeffrey J Glass Mdsc?

Jeffrey J Glass Mdsc is registered in NPPES as a Gastroenterology Physician (its primary provider taxonomy).

Gastroenterology Physician in Highland Park, IL · enumerated 2009 · authorized official Jeffrey Glass, President.

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

National Provider Identifier

1275775553

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Registry record

Entity type Organization (Type 2)

Legal business name Jeffrey J Glass Mdsc

Practice address 1160 Park Ave W, Suite 3n, Highland Park, IL, 60035

Phone (847) 433-6990

Fax (847) 433-8738

Enumeration date Apr 1, 2009

Last updated in NPPES Apr 1, 2009

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Jeffrey Glass

Title President

Phone (847) 433-6990

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 type of organization is Jeffrey J Glass Mdsc?

Jeffrey J Glass Mdsc is registered in NPPES as a Gastroenterology Physician (its primary provider taxonomy).

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-04-01.