Saba Hamiduzzaman, M.D.

Primary specialty

Pulmonary Disease PhysicianTaxonomy code 207RP1001X

License

A142766 Issued in CA

Practice address

1000 Fivepoint
Irvine, CA 92618-2621

Phone

(800) 826-4673

NPI assigned

May 16, 2009

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 3

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

Critical Care (Intensivists)Also: Internal Medicine, Pulmonary Disease

Education

Other, 2009

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

Faculty Physicians and Surgeons of LlusmGroup PAC ID 1153227814, 1,313 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• City of Hope Helford Clinical Research Hospital Hospital, Duarte, CA, CCN 050146
• Palomar Health Downtown Campus Hospital, Escondido, CA, CCN 050115
• Palomar Medical Center Poway Hospital, Poway, CA, CCN 050636
• Loma Linda University Medical Center-Murrieta Hospital, Murrieta, CA, CCN 050770

Merit-based Incentive Payment System (MIPS)

Final score

88.87 of 100Reported as group

Quality

72.13

Promoting interoperability

80

Improvement activities

40

Cost

77.36

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: shamiduzzaman272749@cityofhope.direct-ci.com
• Direct secure messaging: saba.hamiduzzaman.p1@direct.arch.nextgenshare.com
• Direct secure messaging: direct@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

  Pulmonary Disease

  Medicare reassignment Care Compare group NPD
• Faculty Physicians and Surgeons of Llusm

  • Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
  • Apple Valley, CA
  • NPI 1205009917
  Medicare reassignment Care Compare group NPD
• Arch Health Partners, Inc

  • Family Medicine Physician
  • Poway, CA
  • NPI 1649500141

  Internal Medicine

  Medicare reassignment NPD
• Bel Air Critical Care Medical Group, Inc.

  • Critical Care Medicine (Internal Medicine) Physician
  • Los Angeles, CA
  • NPI 1396268041
  Medicare reassignment NPD
• Stem Medical Group, PC

  • Neurological Surgery Physician
  • Denver, CO
  • NPI 1508592361

  CA

  Medicare reassignment NPD
• Faculty Physicians and Surgeons of Llusm

  • Neurological Surgery Physician
  • Loma Linda, CA
  • NPI 1528018553

  Critical Care Medicine

  NPD
• Faculty Physicians and Surgeons of Llusm

  • Family Medicine Physician
  • Moreno Valley, CA
  • NPI 1558788331
  NPD
• Loma Linda University Medical Center

  • General Acute Care Hospital
  • Loma Linda, CA
  • NPI 1194731935
  NPD (past)
• Palomar Health

  • General Acute Care Hospital
  • Escondido, CA
  • NPI 1457321317
  NPD (past)
• Physicians' Hospital of Murrieta, LLC

  • General Acute Care Hospital
  • Murrieta, CA
  • NPI 1386945947
  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
• Loma Linda University Medical Center-Murrieta

  • General Acute Care Hospital
  • Murrieta, CA
  • NPI 1588908388
  Care Compare affiliation
• Palomar Health

  • General Acute Care Hospital
  • Poway, CA
  • NPI 1376513754
  Care Compare affiliation
• Palomar Health

  • General Acute Care Hospital
  • Escondido, CA
  • NPI 1457321317
  Care Compare affiliation

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

{
    "created_epoch": "1242432000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768435200000",
    "number": "1700011004",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 512185",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900510185"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 FIVEPOINT",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926182621",
            "telephone_number": "800-826-4673"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2100 Main St Ste 300",
            "address_purpose": "LOCATION",
            "city": "Huntington Beach",
            "state": "CA",
            "postal_code": "926482489",
            "country_code": "US",
            "telephone_number": "714-252-9415",
            "fax_number": "714-963-8407",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAMIDUZZAMAN",
        "first_name": "SABA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2009-05-16",
        "last_updated": "2026-01-15",
        "certification_date": "2026-01-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "CA",
            "license": "A142766",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "CA",
            "license": "A142766",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A142766",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "direct@cityofhope.direct-ci.com",
            "affiliation": "Y",
            "affiliationName": "CITY OF HOPE MEDICAL FOUNDATION",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1000 Fivepoint",
            "city": "Irvine",
            "state": "CA",
            "country_code": "US",
            "postal_code": "926182377",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Jordyn Elizabeth Halterman
• Tamara Halwani
• Ashley Hamamoto
• Brandon Hamedani
• Hamid a. Towhidian, M.D.,P.C.
• Ashley Hamilton
• Jessica Erin Hamilton, MSW
• Kelsey Hamilton, OTD, OTR/L, RBT
• Natalie Hamilton, PPS
• Shawn Hwang Hamilton, MD

• Pulmonary Disease Physician in Irvine, CA
• Providers in Irvine, CA by specialty
• Pulmonary Disease Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 15, 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.