Joseph Manuel Alonzo, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A45798 Issued in CA

Practice address

420 W Rowland St
Covina, CA 91723-2943

Phone

(626) 331-6411

Fax

(626) 251-1559

NPI assigned

Jun 6, 2006

Last updated

Dec 3, 2025By 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 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

Internal Medicine

Education

University of California, Geffen School of Medicine, 1984

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Healthcare Partners Affiliates Medical GroupGroup PAC ID 7315842002, 775 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Lakeview Hospice Care Inc Hospice, Burbank, CA, CCN 551640

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: jalonzo@93b6177e.micromddirect.com
• Direct secure messaging: jalonzo206581@westdirect.optum.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.

• Healthcare Partners Affiliates Medical Group

  dba Optum

  • Internal Medicine Physician
  • Los Angeles, CA
  • NPI 1659312593
  Medicare reassignment Care Compare group NPD
• Healthcare Partners Affiliates Medical Group

  dba Optum

  • Durable Medical Equipment & Medical Supplies
  • Murrieta, CA
  • NPI 1760057269
  NPD
• Ahmc Whittier Hospital Medical Center LP

  dba Whittier Hospital Medical Center

  • Medicare Defined Swing Bed Hospital Unit
  • Whittier, CA
  • NPI 1497855605
  NPD (past)
• Caremore Medical Group

  • Physical Medicine & Rehabilitation Physician
  • Cerritos, CA
  • NPI 1770656829

  Internal Medicine

  NPD (past)
• Chino Medical Group, Inc

  dba My Family Medical Group

  • Health Maintenance Organization
  • Chino, CA
  • NPI 1790730786

  Internal Medicine

  NPD (past)
• Prime Healthcare Services - Montclair, LLC

  dba Montclair Hopsital Medical Center

  • General Acute Care Hospital
  • Montclair, CA
  • NPI 1992721161
  NPD (past)
• Memorial Medical Group Inc

  • Durable Medical Equipment & Medical Supplies
  • Phoenix, AZ
  • NPI 1255523643
  NPD (past)

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

• Lakeview Hospice Care, Inc.

  • Inpatient Hospice
  • Burbank, CA
  • NPI 1891931564
  Care Compare affiliation

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

{
    "created_epoch": "1149552000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764720000000",
    "number": "1225077050",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 35380",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891335380",
            "telephone_number": "702-579-3203"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "420 W ROWLAND ST",
            "city": "COVINA",
            "state": "CA",
            "postal_code": "917232943",
            "telephone_number": "626-331-6411",
            "fax_number": "626-251-1559"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ALONZO",
        "first_name": "JOSEPH",
        "middle_name": "MANUEL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-06",
        "last_updated": "2025-12-03",
        "certification_date": "2025-12-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A45798",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Thamara Almanza
• Remedios Lucero Almirante, M.D.
• Deisy Almodovar
• Jancie Jasmine Alomoto
• Amanda Alonzo
• Altamed
• Altamed Health Services Corp (AltaMed PACE-Covina)
• Maria E Altamirano
• Maria Rosario Alvaardo
• Eduardo Alvarado Cazares

• Internal Medicine Physician in Covina, CA
• Providers in Covina, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 3, 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.