Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Douglas A Zale MD Inc

Ophthalmology Physician in Merrillville, IN · enumerated 2006 · authorized official Helen Rosolowski, Practice Manager.

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

National Provider Identifier

1265501944

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Registry record

Entity type Organization (Type 2)

Legal business name Douglas A Zale MD Inc

Other name <Unavail>

Practice address 8554 S Broadway, Merrillville, IN, 46410

Phone (219) 736-0488

Fax (219) 736-5129

Enumeration date Nov 7, 2006

Last updated in NPPES Dec 28, 2007

Taxonomy & classification

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Helen Rosolowski

Title Practice Manager

Phone (219) 926-1001

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 is Douglas A Zale MD Inc located?

The practice location on file with NPPES is in Merrillville, IN.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2007-12-28. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-28.