Alexander J Chien, MD

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

A82949 Issued in CA

Practice address

1798 N Garey Ave
Pomona, CA 91767

Phone

(909) 865-9500

NPI assigned

Nov 15, 2005

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, TN2 enrollments

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 2

Specialty

Diagnostic Radiology

Education

University of Michigan Medical School, 1997

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Darin Rentz DO PCGroup PAC ID 7315333853, 131 clinicians

Imaging Specialists PLLCGroup PAC ID 0143218560, 39 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Redlands Community Hospital Hospital, Redlands, CA, CCN 050272

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

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.

• Darin Rentz DO PC

  • Anesthesiology Physician
  • Redlands, CA
  • NPI 1689321747

  Diagnostic Radiology

  Medicare reassignment Care Compare group NPD
• Imaging Specialists PLLC

  • Diagnostic Radiology Physician
  • Brentwood, TN
  • NPI 1659340636
  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 NPD
• Faculty Physicians and Surgeons of Llusm

  • Anatomic Pathology Physician
  • Murrieta, CA
  • NPI 1588020432
  NPD
• Faculty Physicians and Surgeons of Llusm

  • Pediatrics Physician
  • Highland, CA
  • NPI 1689624991
  NPD
• Memrad Medical Group Inc

  • Radiology Clinic/Center
  • Long Beach, CA
  • NPI 1831173905
  NPD (past)
• Rad-Image Medical Group Inc

  • Neuroradiology Physician
  • Long Beach, CA
  • NPI 1710963418

  Diagnostic Radiology

  NPD (past)

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

• Redlands Community Hospital

  • General Acute Care Hospital
  • Redlands, CA
  • NPI 1043354111
  Care Compare affiliation

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

{
    "created_epoch": "1132012800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1255313318",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 OCEANGATE",
            "address_2": "STE 1000",
            "city": "LONG BEACH",
            "state": "CA",
            "postal_code": "908024312",
            "telephone_number": "562-590-7400",
            "fax_number": "562-590-7452"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1798 N GAREY AVE",
            "city": "POMONA",
            "state": "CA",
            "postal_code": "91767",
            "telephone_number": "909-865-9500"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHIEN",
        "first_name": "ALEXANDER",
        "middle_name": "J",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-15",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "CA",
            "license": "A82949",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Rose Lee Chevere
• Nicholas Chew
• Lindsey Chheng
• Frank Chiang, MD
• Victoria Susan Chidboy, RN
• Nitin Chilakamarri, M.D.
• Mindy Ann Chilman, D.O.
• Abinav Teja Chilukuri
• Ching-Chih David Huang M.D.Inc a
• Chino Valley Rehabilitation Center LLC (Chino Valley Healthcare Center)

• Diagnostic Radiology Physician in Pomona, CA
• Providers in Pomona, CA by specialty
• Diagnostic Radiology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.