Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Merrill J Zahtz MD Sc

Q: What is the NPI number for Merrill J Zahtz MD Sc?

The NPI for Merrill J Zahtz MD Sc is 1487833489, a Type 2 (organization) record in the CMS NPPES registry.

Specialist in Evanston, IL · enumerated 2007 · authorized official Merrill Zahtz, President.

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

National Provider Identifier

1487833489

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Registry record

Entity type Organization (Type 2)

Legal business name Merrill J Zahtz MD Sc

Practice address 800 Austin St, Suite 408, Evanston, IL, 60202

Phone (847) 316-4744

Fax (847) 475-6835

Enumeration date Oct 26, 2007

Last updated in NPPES Oct 26, 2007

Taxonomy & classification

174400000X Specialist Other Service Providers Primary

Authorized official

Name Merrill Zahtz

Title President

Phone (773) 478-1197

Other identifiers

Identifier	Type	State	Issuer
0360563631	Medicaid	IL	-

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

Who is the authorized official for Merrill J Zahtz MD Sc?

NPPES lists Merrill Zahtz (President) as the authorized official for this organization.

What is the NPI number for Merrill J Zahtz MD Sc?

The NPI for Merrill J Zahtz MD Sc is 1487833489, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-26.