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Timothy Sullivan, MD PC

Q: What type of organization is Timothy Sullivan, MD PC?

Timothy Sullivan, MD PC is registered in NPPES as a Allergy Physician (its primary provider taxonomy).

Allergy Physician in Ogden, UT · enumerated 2012 · authorized official Timothy Sullivan, Medical Doctor.

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

National Provider Identifier

1548513799

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Registry record

Entity type Organization (Type 2)

Legal business name Timothy Sullivan, MD PC

Practice address 4403 Harrison Blvd, Ste# 4640, Ogden, UT, 84403

Phone (801) 387-4850

Fax (801) 387-4855

Enumeration date Oct 24, 2012

Last updated in NPPES Oct 24, 2012

Taxonomy & classification

207KA0200X Allergy Physician Allopathic & Osteopathic Physicians · License 8263858-1205 (UT) Primary

Authorized official

Name Timothy Sullivan

Title Medical Doctor

Phone (801) 387-4850

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 Timothy Sullivan, MD PC?

Timothy Sullivan, MD PC is registered in NPPES as a Allergy 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 2012-10-24.