Gerald Holtz, M.D.
Diagnostic Radiology Physician · Naperville, IL
Gerald Holtz, M.D. is a diagnostic radiology physician with a practice address in Naperville, Illinois, and NPI 1578649554, issued on Oct 31, 2006. Check the license (Illinois 36-44766, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Gerald Holtz
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 36-44766 IL
Self-reported in NPPES; status is on the state search - Practice location
- 705 S Sleight St, Naperville, IL 60540
- Phone
- (630) 903-4520
- Enumerated
- Oct 31, 2006
- Entity
- Type 1 · individual
Verify Gerald Holtz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 36-44766Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
7 hospital and facility affiliations
- Adventist Health Mendocino CoastFort Bragg, CA · Critical Access Hospitals3 of 5 stars
- Adventist Health TulareTulare, CA · Acute Care Hospitals3 of 5 stars
- Adventist Health DelanoDelano, CA · Acute Care Hospitals2 of 5 stars
- Advanced Radiology And Interventional Associates IncStockton, CA
- Hanford Community HospitalHanford, CA
- San Joaquin Community HospitalBakersfield, CA
- Sol Radiology IncNaperville, IL
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Diagnostic Radiology Physician providers in Illinois
There are 1,679 diagnostic radiology physician records in Illinois.
Other diagnostic radiology physician records in Illinois
- Samir Abboud, MDChicago, IL1124361324
- Ramez Abdalla, M.B., B. CHChicago, IL1407410392
- Sarah Abdel-HadiChicago, IL1932846490
- Hiroyuki AbeChicago, IL1275684243
- Nicole Abedrabbo, MDChicago, IL1629872395
- Rita Abejo, MDChicago, IL1477509537
- Matthew Abell, M.D.Springfield, IL1568726826
- Kinan Abou-Kassem, MDSpringfield, IL1609405026
- Srishti Abrol, MDChicago, IL1396240214
- Gregory Adamo, M.D.Elk Grove Village, IL1790712347
Common questions
What is Gerald Holtz, M.D.'s NPI number?
Gerald Holtz, M.D.'s National Provider Identifier (NPI) is 1578649554, issued on Oct 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gerald Holtz, M.D. located?
The NPPES record lists a practice address at 705 S Sleight St, Naperville, IL, 60540. Phone: (630) 903-4520. Providers update this record themselves, so call before visiting.
How can I verify Gerald Holtz, M.D.'s license?
NPPES lists Illinois license number 36-44766, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.