Gerald Brian Holtz, MD

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

036-044766 Issued in IL

Practice address

705 S Sleight St
Naperville, IL 60540-6628

Phone

(630) 903-4520

NPI assigned

Oct 31, 2006

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 3

Medicare fee-for-service enrollment

Enrolled in IL, TX, NY, CA4 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 4

Specialty

Diagnostic Radiology

Education

Northwestern University Feinberg Medical School, 1968

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Hanford Community HospitalGroup PAC ID 7416868377, 60 clinicians

Adventist Health DelanoGroup PAC ID 1254248016, 47 clinicians

Advanced Radiology and Interventional Associates IncGroup PAC ID 2163816448, 99 clinicians

San Joaquin Community HospitalGroup PAC ID 1557390580, 72 clinicians

Adventist Health Mendocino CoastGroup PAC ID 3678990769, 57 clinicians

Sol Radiology IncGroup PAC ID 1850796681, 66 clinicians

Adventist Health TulareGroup PAC ID 4385988757, 40 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Adventist Health Hanford Hospital, Hanford, CA, CCN 050121
• Adventist Health Tulare Hospital, Tulare, CA, CCN 050784
• Adventist Health Mendocino Coast Hospital, Fort Bragg, CA, CCN 051325
• Adventist Health Delano Hospital, Delano, CA, CCN 050608
• Madera Community Hospital Hospital, Madera, CA, CCN 050856

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations (25 of 62)

Interoperability endpoints

• FHIR API: https://fhir-myrecord.cerner.com/r4/29a5ccea-f4ab-4447-a191-56b20695970f/
• FHIR API: https://fhir-myrecord.cerner.com/r4/a36dfa71-4dd3-4608-9cfb-c7a63ade5531/

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Advanced Radiology and Interventional Associates Inc

  • Diagnostic Radiology Physician
  • Stockton, CA
  • NPI 1669123626

  IL

  Medicare reassignment Care Compare group NPD
• Adventist Health Delano

  • Registered Dietitian
  • Delano, CA
  • NPI 1578798047
  Medicare reassignment Care Compare group NPD
• Adventist Health Tulare

  • General Acute Care Hospital
  • Tulare, CA
  • NPI 1801366711
  Medicare reassignment Care Compare group NPD
• Hanford Community Hospital

  • General Acute Care Hospital
  • Hanford, CA
  • NPI 1538141627
  Medicare reassignment Care Compare group NPD
• San Joaquin Community Hospital

  • General Acute Care Hospital
  • Bakersfield, CA
  • NPI 1538157508
  Medicare reassignment Care Compare group NPD
• Sol Radiology, Inc.

  • Diagnostic Radiology Physician
  • Victorville, CA
  • NPI 1457928111

  IL

  Medicare reassignment Care Compare group NPD
• Adventist Health Mendocino Coast

  • Critical Access Hospital
  • Fort Bragg, CA
  • NPI 1538113725
  Medicare reassignment Care Compare group
• East Central Illinois Radiology Associates, LLC

  • Diagnostic Radiology Physician
  • Danville, IL
  • NPI 1912277443
  Medicare reassignment NPD
• Rockford Health Physicians

  • Multi-Specialty Clinic/Center
  • Rockford, IL
  • NPI 1043242886
  Medicare reassignment NPD
• Adventist Health Medical Center Tehachapi

  • Critical Access Hospital
  • Tehachapi, CA
  • NPI 1275538530
  Medicare reassignment NPD
• Central Valley Community Medical Imaging

  • Diagnostic Radiology Physician
  • Fresno, CA
  • NPI 1376637264

  IL

  Medicare reassignment NPD
• DHHS, PHS, Naihs, Shiprock Hospital

  • General Acute Care Hospital
  • Shiprock, NM
  • NPI 1780639971

  TX

  Medicare reassignment NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Adventist Health Delano

  • General Acute Care Hospital
  • Delano, CA
  • NPI 1144237272
  Care Compare affiliation
• Adventist Health Mendocino Coast

  • Critical Access Hospital
  • Fort Bragg, CA
  • NPI 1538113725
  Care Compare affiliation
• Adventist Health Tulare

  • General Acute Care Hospital
  • Tulare, CA
  • NPI 1801366711
  Care Compare affiliation
• Hanford Community Hospital

  • General Acute Care Hospital
  • Hanford, CA
  • NPI 1538141627
  Care Compare affiliation
• Madera Community Hospital

  • General Acute Care Hospital
  • Madera, CA
  • NPI 1669673646
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1162252800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787702400000",
    "number": "1578649554",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "705 S SLEIGHT ST",
            "city": "NAPERVILLE",
            "state": "IL",
            "postal_code": "605406628",
            "telephone_number": "630-903-4520"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "705 S SLEIGHT ST",
            "city": "NAPERVILLE",
            "state": "IL",
            "postal_code": "605406628",
            "telephone_number": "630-903-4520"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "801 S Milwaukee Ave",
            "address_purpose": "LOCATION",
            "city": "Libertyville",
            "state": "IL",
            "postal_code": "600483204",
            "country_code": "US",
            "telephone_number": "847-362-2900",
            "fax_number": "847-990-5292",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOLTZ",
        "first_name": "GERALD",
        "middle_name": "BRIAN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-10-31",
        "last_updated": "2026-08-26",
        "certification_date": "2026-08-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "IL",
            "license": "036-044766",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MPIN",
            "identifier": "K02428",
            "state": "IL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "801 S Milwaukee Ave",
            "city": "Libertyville",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600483204",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "https://esmd.abilitynetwork.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service",
            "affiliation": "Y",
            "endpointDescription": "2.16.840.1.113883.3.667.2",
            "affiliationName": "Ability Network",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "CMS esMD eMDR",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "64 S Price Rd Ste B",
            "city": "Brownsville",
            "state": "TX",
            "country_code": "US",
            "postal_code": "785212459",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "gholtz309889@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "801 S Milwaukee Ave",
            "city": "Libertyville",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600483204",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Mollie Elana Holman, MSW
• Julia Holmes
• Mary Holmes
• Morgan Elizabeth Holt, PA-C
• Elizabeth Ruth Holtz, M.SL
• Travis R Holtzclaw
• Olivia Ann Holtzinger
• Karla J Holtzman, PA
• Home Care Personal Services, Inc.
• Home Hearing Services Inc

• Diagnostic Radiology Physician in Naperville, IL
• Providers in Naperville, IL by specialty
• Diagnostic Radiology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 26, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.