Michael A. Rosenzweig, M.D.

Primary specialty

Hematology (Internal Medicine) PhysicianTaxonomy code 207RH0000X

License

A118217 Issued in CA

Practice address

1500 Duarte Rd
Duarte, CA 91010-3012

Phone

(626) 256-4673

Fax

(626) 301-8256

NPI assigned

May 4, 2006

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

Other identifiers 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

Hematology/Oncology

Education

University of Arizona College of Medicine, 2001

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

City of Hope Medical FoundationGroup PAC ID 3779751656, 964 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• City of Hope Helford Clinical Research Hospital Hospital, Duarte, CA, CCN 050146
• Eisenhower Medical Center Hospital, Rancho Mirage, CA, CCN 050573

Merit-based Incentive Payment System (MIPS)

Final score

92.8 of 100Reported as group

Quality

78.51

Promoting interoperability

100

Improvement activities

40

Cost

70.37

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mrosenzweig10656@cityofhope.direct-ci.com

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.

• City of Hope Medical Foundation

  • Hematology & Oncology Physician
  • Duarte, CA
  • NPI 1871886366
  Medicare reassignment Care Compare group NPD
• California Cancer Specialists Medical Group Inc

  • Anesthesiology Physician
  • Duarte, CA
  • NPI 1912006636

  Hematology & Oncology

  NPD (past)
• Evans Medical Foundation, Inc.

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1912954124

  Hematology & Oncology

  NPD (past)

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

• City of Hope National Medical Center

  • General Acute Care Hospital
  • Duarte, CA
  • NPI 1750358297
  Care Compare affiliation
• Eisenhower Medical Center

  • General Acute Care Hospital
  • Rancho Mirage, CA
  • NPI 1013981554
  Care Compare affiliation

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

{
    "created_epoch": "1146700800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787702400000",
    "number": "1164470126",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1333S MAYFLOWER AVE",
            "address_2": "2ND FLOOR",
            "city": "MONROVIA",
            "state": "CA",
            "postal_code": "910164066",
            "telephone_number": "626-775-3514",
            "fax_number": "626-408-3911"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 DUARTE RD",
            "city": "DUARTE",
            "state": "CA",
            "postal_code": "910103012",
            "telephone_number": "626-256-4673",
            "fax_number": "626-301-8256"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ROSENZWEIG",
        "first_name": "MICHAEL",
        "middle_name": "A.",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-04",
        "last_updated": "2026-08-26",
        "certification_date": "2026-08-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "CA",
            "license": "A118217",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2076110",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• America J Rosales
• Maria G Rosales
• Steven T. Rosen, M.D.
• Debra J. Rosenbaum, M.D.
• Joseph Rosenthal, MD
• Michelle Laurin Rouse, LCSW
• Roy Saenz, M.D.
• Royal Oaks Hospice Incorporated
• Royal Terrace Healthcare, LLC
• Royal Terrace LLC

• Hematology (Internal Medicine) Physician in Duarte, CA
• Providers in Duarte, CA by specialty
• Hematology (Internal Medicine) Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 26, 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.