Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Grand Traverse Allergy PC

Q: What is the NPI number for Grand Traverse Allergy PC?

The NPI for Grand Traverse Allergy PC is 1518091321, a Type 2 (organization) record in the CMS NPPES registry.

Allergy Physician in Traverse City, MI · enumerated 2007 · authorized official Heather Wierman, Office Manager.

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

National Provider Identifier

1518091321

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Registry record

Entity type Organization (Type 2)

Legal business name Grand Traverse Allergy PC

Practice address 3899 W Front St Ste 1, Traverse City, MI, 49684

Phone (231) 995-3657

Fax (949) 437-8317

Enumeration date Mar 15, 2007

Last updated in NPPES Mar 11, 2019

Taxonomy & classification

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Heather Wierman

Title Office Manager

Phone (231) 995-3657

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 Grand Traverse Allergy PC?

NPPES lists Heather Wierman (Office Manager) as the authorized official for this organization.

What is the NPI number for Grand Traverse Allergy PC?

The NPI for Grand Traverse Allergy PC is 1518091321, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-11.