Andrew Mel Diaz, DO

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

036164669 Issued in IL

Practice address

10400 Haligus Rd
Huntley, IL 60142-9553

Phone

(815) 759-4323

Fax

(815) 759-4948

NPI assigned

Apr 24, 2020

Last updated

Apr 16, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in IL

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Hospitalist

Education

At Still University of Health Sciences, College of Osteo Med, Kirksville, 2020

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Northwestern Medical Faculty FoundationGroup PAC ID 4587576814, 4,386 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Northwestern Medicine McHenry Hospital, McHenry, IL, CCN 140116
• Northwestern Memorial Hospital Hospital, Chicago, IL, CCN 140281

Merit-based Incentive Payment System (MIPS)

Final score

95.19 of 100Reported as apm

Quality

83.05

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

Practice roles

Locations

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

• Northwestern Medical Faculty Foundation

  dba Northwestern Medical Group

  • Multi-Specialty Clinic/Center
  • Carol Stream, IL
  • NPI 1346235314
  Medicare reassignment Care Compare group NPD
• Northwestern Medical Faculty Foundation

  dba Northwestern Medical Group

  • Durable Medical Equipment & Medical Supplies
  • Chicago, IL
  • NPI 1417718479
  NPD

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

• Northern Illinois Medical Center

  dba Centegra Hospital McHenry

  • General Acute Care Hospital
  • McHenry, IL
  • NPI 1982611281
  Care Compare affiliation
• Northwestern Memorial Hospital

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1497859649
  Care Compare affiliation

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

{
    "created_epoch": "1587686400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776297600000",
    "number": "1255951786",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "530 NE GLEN OAK AVE BLDG 5676",
            "city": "PEORIA",
            "state": "IL",
            "postal_code": "616370001",
            "telephone_number": "309-624-9351"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10400 HALIGUS RD",
            "city": "HUNTLEY",
            "state": "IL",
            "postal_code": "601429553",
            "telephone_number": "815-759-4323",
            "fax_number": "815-759-4948"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "530 NE Glen Oak Ave",
            "address_purpose": "LOCATION",
            "city": "Peoria",
            "state": "IL",
            "postal_code": "616370001",
            "country_code": "US",
            "telephone_number": "309-655-2000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DIAZ",
        "first_name": "ANDREW",
        "middle_name": "MEL",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-04-24",
        "last_updated": "2026-04-16",
        "certification_date": "2026-04-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036164669",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• David Degrassi, FNP-BC
• Hess Demonteverde, PT, DPT
• Dental Professionals of Illinois, PC (Dental Care of Huntley)
• Erika Dettlo
• Pooja Srinivas Dewilde, D.O.
• Salvatore Dimasi, BS, RPH
• Dippflott
• Lisa Djinis, MD
• Cindy DO
• Juliann Domagalski, L.AC.

• Internal Medicine Physician in Huntley, IL
• Providers in Huntley, IL by specialty
• Internal Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 16, 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.