Ayad Hamdan, M.D.

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

C162882 Issued in CA

Practice address

3855 Health Sciences Dr # 960
La Jolla, CA 92093-1503

Phone

(858) 822-6600

Fax

(858) 822-6844

NPI assigned

May 24, 2007

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 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

Hematology/Oncology

Education

Other, 2003

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Regents of the University of CaliforniaGroup PAC ID 3577476761, 2,047 clinicians

Eisenhower Medical CenterGroup PAC ID 5890689657, 462 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• UC San Diego Health Hillcrest - Hillcrest Med Ctr Hospital, San Diego, CA, CCN 050025
• Eisenhower Medical Center Hospital, Rancho Mirage, CA, CCN 050573

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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 and National Provider Directory roles.

• Eisenhower Medical Center

  dba Eisenhower Health

  • General Acute Care Hospital
  • Rancho Mirage, CA
  • NPI 1013981554
  Medicare reassignment Care Compare group NPD
• Regents of the University of California

  • Pain Medicine (Anesthesiology) Physician
  • San Diego, CA
  • NPI 1376646869
  Medicare reassignment Care Compare group NPD
• Eisenhower Medical Center

  dba Eisenhower Health

  • General Acute Care Hospital
  • Rancho Mirage, CA
  • NPI 1598272577
  NPD
• Eisenhower Medical Center

  dba Eisenhower Health

  • General Acute Care Hospital
  • Cathedral City, CA
  • NPI 1629384615
  NPD
• Regents of the University of California

  • Internal Medicine Physician
  • San Diego, CA
  • NPI 1508968751
  NPD
• Regents of the University of California

  • Diagnostic Radiology Physician
  • San Diego, CA
  • NPI 1558463927
  NPD
• Regents of the University of California

  dba Ucsd Medical Center Pharmacy

  • Pharmacy
  • San Diego, CA
  • NPI 1598786576
  NPD (past)
• Regents of the University of California Ucsd Head and Neck Surgery

  • Otolaryngology Physician
  • San Diego, CA
  • NPI 1679509962
  NPD (past)

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

• Eisenhower Medical Center

  dba Eisenhower Health

  • General Acute Care Hospital
  • Rancho Mirage, CA
  • NPI 1013981554
  Care Compare affiliation
• Regents of the University of California

  dba UCSD Medical Center

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1184722779
  Care Compare affiliation

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

{
    "created_epoch": "1179964800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762905600000",
    "number": "1144431230",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "FILE 57326",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900747326",
            "telephone_number": "800-926-8273"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3855 HEALTH SCIENCES DR # 960",
            "city": "LA JOLLA",
            "state": "CA",
            "postal_code": "920931503",
            "telephone_number": "858-822-6600",
            "fax_number": "858-822-6844"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAMDAN",
        "first_name": "AYAD",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-05-24",
        "last_updated": "2025-11-12",
        "certification_date": "2025-11-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CA",
            "license": "C162882",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jenifer M Hallock, MBA, LAC
• John Rowe Hallsten, MD
• William Sickles Halsey III, M.D.
• Kenneth Nicholas Halter II, PA-C
• Jeremy-Ann Guzman Ham, MD
• Merlin J Hamer, M.D.
• Merlin L. Hamer, MD
• Wali A Hamidy, DMD
• Scott Ryan Hampton, PHARMD
• Katherine Han

• Hematology & Oncology Physician in La Jolla, CA
• Providers in La Jolla, CA by specialty
• Hematology & Oncology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 12, 2025; 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.