Maximiliano Hyon, D.O.

Primary specialty

Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X

License

20A13210 Issued in CA

Practice address

100 E Valencia Mesa Dr Ste 105
Fullerton, CA 92835-3816

Phone

(714) 446-5640

Fax

(714) 446-5625

NPI assigned

Mar 17, 2014

Last updated

Jan 16, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

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 1

Specialty

EndocrinologyAlso: Internal Medicine

Education

Other, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Providence Medical FoundationGroup PAC ID 8921993205, 1,461 clinicians

White Memorial Medical Group IncGroup PAC ID 9436042967, 12 clinicians

White Memorial Medical CenterGroup PAC ID 4486622362, 68 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Providence St. Jude Medical Center Hospital, Fullerton, CA, CCN 050168
• Adventist Health White Memorial Hospital, Los Angeles, CA, CCN 050103

Merit-based Incentive Payment System (MIPS)

Final score

90.02 of 100Reported as group

Quality

69.82

Promoting interoperability

95

Improvement activities

40

Cost

67.76

Merit-based Incentive Payment System (MIPS)

Final score

95.77 of 100Reported as apm

Quality

81.54

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: maximiliano.hyon.1@27758.direct.athenahealth.com

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.

• White Memorial Medical Group, Inc.

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1689769374
  Medicare reassignment Care Compare group NPD
• Providence Medical Foundation

  • Family Medicine Physician
  • Brea, CA
  • NPI 1871607762
  Medicare reassignment Care Compare group
• White Memorial Medical Center

  • General Acute Care Hospital
  • Los Angeles, CA
  • NPI 1215927470
  Medicare reassignment Care Compare group
• Adventist Health Physicians Network

  • Family Medicine Physician
  • Glendale, CA
  • NPI 1083976294

  Internal Medicine

  Medicare reassignment NPD
• Adventist Health Physicians Network

  • Orthopaedic Surgery Physician
  • Glendale, CA
  • NPI 1083130587
  NPD
• Adventist Health Physicians Network

  • Physical Therapy Clinic/Center
  • Paradise, CA
  • NPI 1134092190
  NPD
• Providence Medical Foundation

  • Family Medicine Physician
  • Mission Viejo, CA
  • NPI 1427305960
  NPD
• Providence Medical Foundation

  • Family Medicine Physician
  • Anaheim, CA
  • NPI 1639715709
  NPD
• Queen of the Valley Medical Association

  dba St Joseph Heritage Health System

  • Gynecology Physician
  • Napa, CA
  • NPI 1649260126
  NPD (past)

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

• St Jude Hospital Inc

  dba Providence St. Jude Medical Center

  • General Acute Care Hospital
  • Fullerton, CA
  • NPI 1194926279
  Care Compare affiliation
• St Jude Hospital Inc

  dba Providence St. Jude Medical Center

  • General Acute Care Hospital
  • Brea, CA
  • NPI 1891904942
  Care Compare affiliation
• White Memorial Medical Center

  • General Acute Care Hospital
  • Los Angeles, CA
  • NPI 1215927470
  Care Compare affiliation

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

{
    "created_epoch": "1395014400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768521600000",
    "number": "1942626767",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2550 W MAIN ST STE 301",
            "city": "ALHAMBRA",
            "state": "CA",
            "postal_code": "918017003",
            "telephone_number": "626-457-6900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 E VALENCIA MESA DR STE 105",
            "city": "FULLERTON",
            "state": "CA",
            "postal_code": "928353816",
            "telephone_number": "714-446-5640",
            "fax_number": "714-446-5625"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1414 S Grand Ave Ste 456",
            "address_purpose": "LOCATION",
            "city": "Los Angeles",
            "state": "CA",
            "postal_code": "900153071",
            "country_code": "US",
            "telephone_number": "213-745-6047",
            "fax_number": "213-748-9715",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HYON",
        "first_name": "MAXIMILIANO",
        "credential": "D.O.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2014-03-17",
        "last_updated": "2026-01-16",
        "certification_date": "2026-01-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "20A13210",
            "primary": false
        },
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "CA",
            "license": "20A13210",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Yun Ji Hwang
• HWP Management Inc (Fullerton Sweet Home)
• Nancy Marie Hybl-Bostwick, L.C.S.W.
• Ian Thomas Hyland
• Latrina Nicole Hynes
• Younghee Hyu, NP
• James B Hyun, PHARMD
• Natalie Ibarra
• Susana Ibarra
• Kimiye Ibello

• Endocrinology, Diabetes & Metabolism Physician in Fullerton, CA
• Providers in Fullerton, CA by specialty
• Endocrinology, Diabetes & Metabolism Physician in California

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