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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GERALD BRIAN HOLTZ MD
NPI 1578649554
Radiology - Diagnostic Radiology in Naperville, IL

Active since October 31, 2006PECOS EnrolledAccepts Medicare Assignment
705 S SLEIGHT ST, NAPERVILLE, IL 60540(630) 903-4520 Get Directions Write a Review

NPPES record last updated: August 26, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Gerald Brian Holtz Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GERALD BRIAN HOLTZ MD (NPI 1578649554) is an individual diagnostic radiology provider in Naperville, Illinois, licensed in Illinois (036-044766) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Libertyville, and is a graduate of Northwestern University Feinberg Medical School (1968).

NPPES Registry Identity

NPI1578649554
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameDR. GERALD BRIAN HOLTZCredential: MD
Location Address705 S SLEIGHT STNaperville, IL 60540-6628
Mailing Address705 S Sleight StNaperville, IL 60540-6628 · (630) 903-4520
Phone(630) 903-4520
Sole ProprietorYes
Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 1968
Enumeration DateOctober 31, 2006
Last NPPES UpdateAugust 26, 2026
NPPES CertifiedAugust 26, 2026
✔ NPI 1578649554 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License✔ Licensed in IL · 036-044766
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
705 S SLEIGHT ST, Naperville, IL 60540
Open in Google Maps ↗

Secondary Practice Location 1

Location 1801 S Milwaukee AveLibertyville, IL 60048-3204 · Phone (847) 362-2900 · Fax (847) 990-5292

Other Identifiers 1

OtherK02428IL · Mpin

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gerald Brian Holtz Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6507759867
PECOS Enrollment IDI20040203000052, I20220405000845
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

24

Medicare enrollment records show Gerald Holtz reassigns Medicare billing to 24 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Integrated Imaging Consultants LLC
24 mi
Diagnostic Radiology
1775 DEMPSTER ST
Park Ridge, IL 60068
  • Reassigned Medicare billing, Illinois enrollment
  • 202 clinicians in this Medicare group
NPI 1700285335 (847) 803-1000
Rockford Health Physicians
57 mi
Multi-Specialty
8201 E RIVERSIDE BLVD
Rockford, IL 61114
  • Reassigned Medicare billing, Illinois enrollment
  • 1,375 clinicians in this Medicare group
NPI 1043242886 (608) 314-2428
East Central Illinois Radiology Associates, LLC
115 mi
Diagnostic Radiology
812 N LOGAN AVE, RADIOLOGY DEPT
Danville, IL 61832
  • Reassigned Medicare billing, Illinois enrollment
  • 28 clinicians in this Medicare group
NPI 1912277443 (217) 443-5000
Jamaica Hospital
749 mi
Emergency Medical Services
8900 VAN WYCK EXPWY
Jamaica, NY 11418
  • Reassigned Medicare billing, New York enrollment
  • 738 clinicians in this Medicare group
NPI 1477505220 (718) 206-8918
Dhhs, Phs, Naihs, Shiprock Hospital
1,119 mi
General Acute Care Hospital
6 ROAD 7586
Bloomfield, NM 87413
  • Reassigned Medicare billing, Texas enrollment
  • 572 clinicians in this Medicare group
NPI 1760427587 (505) 368-6401
Southern Inyo Healthcare District
1,636 mi
Critical Access
501 E. LOCUST STREET
Lone Pine, CA 93545
  • Reassigned Medicare billing, California enrollment
  • 97 clinicians in this Medicare group
NPI 1831128602 (760) 876-5501
Sol Radiology, Inc.
1,656 mi
Diagnostic Radiology
12490 BUSINESS CENTER DR STE 200
Victorville, CA 92395
  • Reassigned Medicare billing, Illinois enrollment
  • 18 clinicians in this Medicare group
NPI 1457928111 (760) 728-1900
Seven Star Hospital Associates Inc.
1,663 mi
Diagnostic Radiology
301 N SAN JACINTO ST STE 201
Hemet, CA 92543
  • Reassigned Medicare billing, Illinois enrollment
NPI 1043813140 (951) 537-6002
Adventist Health Medical Center Tehachapi
1,672 mi
Rural Health
9350 N LOOP BLVD
California City, CA 93505
  • Reassigned Medicare billing, California enrollment
  • 192 clinicians in this Medicare group
NPI 1699084525 (661) 823-1622
Fullerton Radiology Medical Group, Inc
1,702 mi
Diagnostic Radiology
5528 E LA PALMA AVE STE 4A
Anaheim, CA 92807
  • Reassigned Medicare billing, California enrollment
  • 95 clinicians in this Medicare group
NPI 1861451858 (714) 993-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 16

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

X-ray of chest, 1 view 71045
A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.
408 services384 patients
Ct scan of abdomen and pelvis without contrast 74176
A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.
151 services148 patients
Ct scan of abdomen and pelvis with contrast 74177
A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.
106 services106 patients
Ct scan head or brain without contrast 70450
A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.
97 services97 patients
Ct scan of blood vessels of chest with contrast 71275
A CT scan of the chest with contrast is a non-invasive imaging test. It uses X-rays and a special dye to get detailed images of your blood vessels in the chest. This helps in diagnosing conditions related to heart and lungs.
60 services60 patients
Ct scan of chest without contrast 71250
A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.
46 services46 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60540 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$93.02 typical visit price
range $59.81 – $181.38
Typical copayment $23.25 (range $14.95 – $45.34)
Most-billed visit code 99203
Established Patient
$74.38 typical visit price
range $19.15 – $147.12
Typical copayment $18.59 (range $4.78 – $36.78)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gerald Holtz's NPI number?

The NPI number for Gerald Holtz is 1578649554. It was assigned to this individual provider in the NPPES registry on October 31, 2006.

Where is Gerald Holtz located?

Gerald Holtz practices at 705 S Sleight St, Naperville, IL 60540. The listed phone number is (630) 903-4520.

What is Gerald Holtz's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Gerald Holtz enrolled in Medicare?

Yes. Gerald Holtz is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Gerald Holtz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gerald Holtz reassigns Medicare benefits to 24 organizations: Integrated Imaging Consultants LLC (Park Ridge, IL), Rockford Health Physicians (Rockford, IL), East Central Illinois Radiology Associates, LLC (Danville, IL), Jamaica Hospital (Jamaica, NY), Dhhs, Phs, Naihs, Shiprock Hospital (Bloomfield, NM) and 19 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gerald Holtz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Gerald Holtz was last updated on August 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 56 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.