Hussein Merza, MD

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

A168484 Issued in CA

Practice address

260 E Ontario Ave Ste 101
Corona, CA 92879-3508

Phone

(951) 371-2411

Fax

(951) 284-0177

NPI assigned

Jan 3, 2012

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 1

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

Medical OncologyAlso: Hematology/Oncology, Internal Medicine

Education

Other, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Southern California Permanente Medical GroupGroup PAC ID 6002729175, 11,250 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Kaiser Foundation Hospital Fontana/Ontario Hospital, Fontana, CA, CCN 050140

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

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.

• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Riverside, CA
  • NPI 1316979834
  Medicare reassignment Care Compare group NPD
• Compassionate Cancer Care Medical Group, Inc.

  • Specialist
  • Fountain Valley, CA
  • NPI 1548248032
  Medicare reassignment NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Santa Clarita, CA
  • NPI 1316409410
  NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Fontana, CA
  • NPI 1316463763
  NPD

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

• Kaiser Foundation Hospitals

  • General Acute Care Hospital
  • Fontana, CA
  • NPI 1356496772
  Care Compare affiliation

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

{
    "created_epoch": "1325548800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1748304000000",
    "number": "1235409673",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "260 E ONTARIO AVE STE 101",
            "city": "CORONA",
            "state": "CA",
            "postal_code": "928793508",
            "telephone_number": "951-371-2411",
            "fax_number": "951-284-0177"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "260 E ONTARIO AVE STE 101",
            "city": "CORONA",
            "state": "CA",
            "postal_code": "928793508",
            "telephone_number": "951-371-2411",
            "fax_number": "951-284-0177"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1240 S Cedar Crest Blvd Ste 401",
            "address_purpose": "LOCATION",
            "city": "Allentown",
            "state": "PA",
            "postal_code": "181036218",
            "country_code": "US",
            "telephone_number": "610-402-7880",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "333 Cottman Ave",
            "address_purpose": "LOCATION",
            "city": "Philadelphia",
            "state": "PA",
            "postal_code": "191112434",
            "country_code": "US",
            "telephone_number": "215-728-6900",
            "fax_number": "215-214-1425",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MERZA",
        "first_name": "HUSSEIN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-01-03",
        "last_updated": "2025-05-27",
        "certification_date": "2020-09-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "CA",
            "license": "A168484",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CA",
            "license": "A168484",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/scalceq",
            "affiliation": "Y",
            "endpointDescription": "Carequality",
            "affiliationName": "Southern California Permanente Medical Group",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "9961 Sierra Ave",
            "city": "Fontana",
            "state": "CA",
            "country_code": "US",
            "postal_code": "923356720",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jordan Magtoto Mercado, FNP-C
• Marichelle Patag Mercado
• Michael Merino
• Rachel Merlan
• Rachel F Mershon, RDN
• Louis Anthony Metoyer
• Brittany Mexia-Wirth
• Jose M Meza
• Patricia Meza
• Mi Mi Kyaing, M.D., Inc.

• Hematology & Oncology Physician in Corona, CA
• Providers in Corona, 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 May 27, 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.