NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Gary D Jacobsen, OD

Optometrist in Chandler, AZ · enumerated 2005 · practices at Tom Sowash Od & Associates.

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

National Provider Identifier

1891786513

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Gary D Jacobsen
Credential OD
Sex Male
Practice address Chandler, AZ, 85226
Phone (480) 726-7009
Enumeration date Nov 2, 2005
Last updated in NPPES Feb 8, 2014

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 453 (MT) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
0480350 Medicaid MT -
011003936 Other - MEDICARE PTAN

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 does Gary Jacobsen practice?
The practice location on file with NPPES is in Chandler, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Gary Jacobsen?
The National Provider Identifier (NPI) for Gary Jacobsen is 1891786513, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-08.