Individual provider Active NPI

Roslyn Mianglee Chaisanguanthum, M.D.

  • Specialist
  • Sylmar, CA
National Provider Identifier
1174726954
Registry record updated Feb 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
SpecialistTaxonomy code 174400000X
License
A84781 Issued in CA
Practice address
14445 Olive View Dr
Room 2B-182
Sylmar, CA 91342-1437
Phone
(818) 364-3205
NPI assigned
Jun 7, 2007
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 3, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology & Oncology Physician 207RH0003X MD70065738 WA
Specialist 174400000X A84781 CA Primary

Addresses

Primary practice location

14445 Olive View Dr
Room 2B-182
Sylmar, CA 91342-1437

Mailing address

11356 Missouri Ave
Los Angeles, CA 90025-5554
Phone (626) 378-2209

Other practice location 1

201 16th Ave E
Seattle, WA 98112-5226
Phone (206) 326-3000

Electronic endpoints 2

TypeEndpointUseAffiliation
SOAP URL https://careepicwa.kp.org:14430/Interconnect-CE-PRD/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ceq Health Information Exchange (HIE)
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, WA2 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

Enrollment IDStateProvider typePAC IDDetails
I20080509000700 CA Practitioner - Hematology/OncologyPractitioner - Internal Medicine 0840379236 Reassigns benefits to 1 organization
I20260218001539 WA Practitioner - Hematology/Oncology 0840379236 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Hematology/OncologyAlso: Internal Medicine
Education
Other, 2002
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

25821 Vermont Ave
Harbor City, CA 90710-3518
Phone (310) 325-5111

25825 Vermont Ave
Harbor City, CA 90710-3518
Phone (310) 325-5111

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A84781CAMDSpecialist
84781CAMDPharmacist
MD70065738WAMDHematology & Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Kaiser Foundation Health Plan of Washington CurrentSince Jan 4, 2026 Accepting new patients
Kaiser Foundation Health Plan of Washington CurrentSince Jan 4, 2026 Accepting new patients
Southern California Permanente Medical Group Current Accepting new patients
Southern California Permanente Medical Group CurrentSince Jul 14, 2008 Accepting new patients
Southern California Permanente Medical Group CurrentSince Jul 14, 2008 Accepting new patients

Locations

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

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

201 16th Ave E
Seattle, WA 98112
Phone (206) 326-4545

200 15th Ave E
Seattle, WA 98112
Phone (206) 326-4530

9505 S Steele St
Tacoma, WA 98444
Phone (253) 597-6800

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 1

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

NPI Registry JSON

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

{
    "created_epoch": "1181174400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770076800000",
    "number": "1174726954",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11356 MISSOURI AVE",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900255554",
            "telephone_number": "626-378-2209"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "14445 OLIVE VIEW DR",
            "address_2": "ROOM 2B-182",
            "city": "SYLMAR",
            "state": "CA",
            "postal_code": "913421437",
            "telephone_number": "818-364-3205"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "201 16th Ave E",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981125226",
            "country_code": "US",
            "telephone_number": "206-326-3000",
            "fax_number": "877-515-2975",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHAISANGUANTHUM",
        "first_name": "ROSLYN",
        "middle_name": "MIANGLEE",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-06-07",
        "last_updated": "2026-02-03",
        "certification_date": "2026-02-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "WA",
            "license": "MD70065738",
            "primary": false
        },
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "CA",
            "license": "A84781",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwa.kp.org:14430/Interconnect-CE-PRD/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ceq",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "201 16th Ave E",
            "city": "Seattle",
            "state": "WA",
            "country_code": "US",
            "postal_code": "981125226",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "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": "25825 Vermont Ave",
            "city": "Harbor City",
            "state": "CA",
            "country_code": "US",
            "postal_code": "907103518",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Sylmar, CA

Sources for this page

Verify at the official NPI Registry.