Fernan F. De Guzman, M.D.

Primary specialty

SpecialistTaxonomy code 174400000X

Practice address

548 South Marine Corps Drive
Tamuning, GU 96913

Phone

(671) 646-5824

Fax

(671) 647-3546

NPI assigned

Apr 6, 2006

Last updated

Jul 13, 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 GU

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

AnesthesiologyAlso: Interventional Pain Management

Education

Other, 1990

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Guam Memorial HospitalGroup PAC ID 5890781694, 132 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Guam Memorial Hospital Authority Hospital, Tamuning, GU, CCN 650001

Merit-based Incentive Payment System (MIPS)

Final score

88.81 of 100Reported as group

Quality

83.57

Improvement activities

40

Cost

76.16

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• Guam Memorial Hospital

  • General Acute Care Hospital
  • Oka Tamuning, GU
  • NPI 1366519027
  Medicare reassignment Care Compare group NPD
• Hafa Specialist Group LLP

  dba Hafa Adai Specialist Group LLP

  • Specialist
  • Tamuning, GU
  • NPI 1235141060
  Medicare reassignment
• Guam Memorial Hospital

  • Skilled Nursing Facility
  • Oka Tamuning, GU
  • NPI 1952479131
  NPD

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

• Guam Memorial Hospital

  • General Acute Care Hospital
  • Oka Tamuning, GU
  • NPI 1366519027
  Care Compare affiliation

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

{
    "created_epoch": "1144281600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1669434254",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 6578",
            "city": "TAMUNING",
            "state": "GU",
            "postal_code": "969316578",
            "telephone_number": "671-646-6956",
            "fax_number": "671-647-3546"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "548 SOUTH MARINE CORPS DRIVE",
            "city": "TAMUNING",
            "state": "GU",
            "postal_code": "96913",
            "telephone_number": "671-646-5824",
            "fax_number": "671-647-3546"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DE GUZMAN",
        "first_name": "FERNAN",
        "middle_name": "F.",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-06",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "GU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Glenn Donald Cunningham, MD
• Kendrick Justin Ramirez Dalmacio, PHARMD, RPH
• Jenine Lynn Aguon Cabrera Damian, LCSW
• Arlene Datu
• Angeline David, DRPH, MHS, RD
• Kisha Charizze Oasay De Joya, RN
• MC Jason Frias De Luna, LPC-178
• Daniel Edward Debardeleben, MD
• Tearsa Debardeleben, RD, LD
• Marjorie Fricke Debenedictis, MD

• Specialist in Tamuning, GU
• Providers in Tamuning, GU by specialty
• Specialist in Guam

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.