Individual provider Active NPI

Alexander Sai-Chak Ho, M.D.

  • Diagnostic Radiology Physician
  • Fontana, CA
National Provider Identifier
1629251566
Registry record updated Apr 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
License
U8344 Issued in TX
Practice address
9961 Sierra Ave
Mob3, Basement
Fontana, CA 92335-6720
Phone
(909) 427-3562
NPI assigned
Dec 13, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 1, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Diagnostic Radiology Physician 2085R0202X A114491 CA
Diagnostic Radiology Physician 2085R0202X U8344 TX Primary

Addresses

Primary practice location

9961 Sierra Ave
Mob3, Basement
Fontana, CA 92335-6720

Mailing address

9961 Sierra Ave
Mob3, Basement
Fontana, CA 92335-6720

Other identifiers 2

IdentifierTypeStateIssuer
036138037OtherILILLINOIS DEPARTMENT OF FINANCIAL & PROFESSIONAL REGULATION
A114491OtherCAMEDICAL LICENCE

Electronic endpoints 1

TypeEndpointUseAffiliation
SOAP URL https://careepicwest.kp.org:14430/Interconnect-prodcalgateway/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/scalceq Health Information Exchange (HIE) Southern California Permanente Medical Group

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, IL, TX3 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 3

Enrollment IDStateProvider typePAC IDDetails
I20110623000647 CA Practitioner - Diagnostic RadiologyPractitioner - Interventional Radiology 1052599958 Reassigns benefits to 1 organization
I20240315002923 IL Practitioner - Diagnostic Radiology 1052599958 Reassigns benefits to 1 organization
I20250424002733 TX Practitioner - Diagnostic Radiology 1052599958 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Diagnostic Radiology
Education
University of California, San Diego School of Medicine, 2006
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mands Radiology Associates PAGroup PAC ID 3173505088, 54 clinicians
VHS San Antonio Imaging Partners LPGroup PAC ID 5395723787, 69 clinicians
Radiology Imaging Corpus Christi PLLCGroup PAC ID 9436537362, 33 clinicians

Practice addresses (Care Compare)

Glenview, IL 60025
Phone (210) 455-0167

1763 Medical Way
Baptist Mands Imaging New Braunfels
New Braunfels, TX 78132-4521
Phone (210) 785-2500

215 E Quincy St
Suite 100
San Antonio, TX 78215-2032
Phone (210) 351-0784

3011 W Loop 1604
San Antionio, TX 78251-3901

3226 S Alameda St
Corpus Christi, TX 78404-2508
Phone (361) 888-6684

3327 Research PLZ
San Antonio, TX 78235-5156
Phone (210) 423-3950

4103 N Loop 1604 W
107 The Orthopedic and Neurologic Imaging
San Antonio, TX 78249-1380
Phone (210) 785-2519

8815 Village Dr
San Antonio, TX 78217-5415
Phone (210) 590-5822

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
97.84 of 100Reported as group
Quality
99.37
Improvement activities
40
Cost
80.16

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A114491CAMDDiagnostic Radiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Radiology Imaging Corpus Christi, PLLC Diagnostic Radiology CurrentSince Jan 23, 2025 Accepting new patients
Southern California Permanente Medical Group Current Accepting new patients
Southern California Permanente Medical Group CurrentSince Apr 20, 2012 Accepting new patients
VHS San Antonio Imaging Partners, LP Diagnostic Radiology CurrentSince Sep 11, 2025 Accepting new patients
M&S Radiology Associates, PA CurrentSince Mar 1, 2024 Accepting new patients
VHS San Antonio Partners, LLC Past Accepting new patients

Locations

5475 E La Palma Ave
Anaheim, CA 92807
Phone (714) 279-6088

25825 Vermont Ave
Harbor City, CA 90710
Phone (310) 325-5111

4733 W Sunset Blvd
Los Angeles, CA 90027
Phone (213) 667-4784

6041 Cadillac Ave
Los Angeles, CA 90034
Phone (323) 857-2000

13652 Cantara St
Panorama City, CA 91402
Phone (818) 375-2417

393 E Walnut St
Unit 3RD
Pasadena, CA 91188
Phone (626) 405-7914

4647 Zion Ave
San Diego, CA 92120
Phone (619) 528-3038

1255 W Arrow Hwy
San Dimas, CA 91773
Phone (909) 394-2526

5601 De Soto Ave
Woodland Hls, CA 91367
Phone (818) 719-2000

4241 Vets Blvd
Ste 200
Metairie, LA 70006

2825 Spohn Dr S
Corpus Christi, TX 78414
Phone (361) 991-9595

3226 S Alameda St
Corpus Christi, TX 78404
Phone (361) 888-6684

11274 McCombs St
El Paso, TX 79934
Phone (915) 242-2400

555 Creekside Xing
New Braunfels, TX 78130
Phone (830) 387-4660

2111 SE Loop 410
San Antonio, TX 78220
Phone (210) 390-8240

7719 S Ih 35
San Antonio, TX 78224
Phone (210) 572-2955

111 Dallas St
San Antonio, TX 78205
Phone (210) 297-7000

8715 Village Dr
Ste 320
San Antonio, TX 78217
Phone (210) 656-3109

25615 US Highway 281 N
San Antonio, TX 78258
Phone (210) 292-0168

9522 Huebner Rd
San Antonio, TX 78240
Phone (210) 478-5390

6491 Woodlake Pkwy
San Antonio, TX 78244
Phone (210) 622-8220

7930 Floyd Curl Dr
San Antonio, TX 78229
Phone (210) 297-5000

215 E Quincy St
Ste 100
San Antonio, TX 78215
Phone (210) 351-0784

520 Madison Oak Dr
San Antonio, TX 78258
Phone (210) 297-0412

16977 Interstate 35 N
Schertz, TX 78154
Phone (210) 572-8400

Organizations & group practices 6

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.

Hospital & facility affiliations 13

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

View all 13

NPI Registry JSON

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

{
    "created_epoch": "1197504000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775001600000",
    "number": "1629251566",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9961 SIERRA AVE",
            "address_2": "MOB3, BASEMENT",
            "city": "FONTANA",
            "state": "CA",
            "postal_code": "923356720"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9961 SIERRA AVE",
            "address_2": "MOB3, BASEMENT",
            "city": "FONTANA",
            "state": "CA",
            "postal_code": "923356720",
            "telephone_number": "909-427-3562"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HO",
        "first_name": "ALEXANDER",
        "middle_name": "SAI-CHAK",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-12-13",
        "last_updated": "2026-04-01",
        "certification_date": "2026-04-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "CA",
            "license": "A114491",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "TX",
            "license": "U8344",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ILLINOIS DEPARTMENT OF FINANCIAL & PROFESSIONAL REGULATION",
            "identifier": "036138037",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICAL LICENCE",
            "identifier": "A114491",
            "state": "CA"
        }
    ],
    "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": []
}

Other providers in Fontana, CA

Sources for this page

Verify at the official NPI Registry.