Gerald Brian Holtz, MD

Diagnostic Radiology Physician · Naperville, IL

Individual Active NPI

NPI number 1578649554

Practice location

705 S Sleight St
Naperville, IL 60540-6628
Phone
(630) 903-4520

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NPI record

NPI
1578649554
Entity type
Individual (Type 1)
Enumeration date
October 31, 2006
Last updated
August 26, 2026
Certified
August 26, 2026
Sole proprietor
Yes

Specialties & taxonomy codes

TaxonomyCodeLicenseState
Diagnostic Radiology Physician Primary 2085R0202X 036-044766 IL

Other practice locations (1)

  • 801 S Milwaukee Ave, Libertyville, IL 60048-3204 · (847) 362-2900

About Dr. Holtz

Gerald Brian Holtz, MD is a healthcare provider registered in the NPI registry with the primary taxonomy Diagnostic Radiology Physician (code 2085R0202X). The practice location is 705 S Sleight St, Naperville, IL 60540-6628. The NPI number 1578649554 was assigned on October 31, 2006 and the record was last updated on August 26, 2026.

Dr. Holtz lists a license in the registry: #036-044766 (IL) for Diagnostic Radiology Physician. License numbers are self-reported to NPPES; verify them with the state licensing board.

Frequently asked questions

What is the NPI number of Gerald Brian Holtz, MD?

The NPI number is 1578649554.

What is the phone number of Dr. Holtz?

The phone number listed for the practice location is (630) 903-4520.

Where is Dr. Holtz located?

705 S Sleight St, Naperville, IL 60540-6628.

What is the taxonomy code for Dr. Holtz?

The primary taxonomy code is 2085R0202X – Diagnostic Radiology Physician.

Is this information correct?

All details come from the public NPPES registry. Providers can update their record at nppes.cms.hhs.gov; changes appear here after the next weekly update.

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