Active NPI
Rick Chien CHI Tsay, D.M.D, M.D.
- Oral & Maxillofacial Surgery (D.M.D.)
- Los Angeles, CA
National Provider Identifier
1851392062
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Oral & Maxillofacial Surgery (D.M.D.)
- License
- A91464
- Practice address
- 10811 Ashton Ave
#308
Los Angeles, CA 90024-4878 - Phone
- (310) 446-1368
- NPI assigned
- Aug 10, 2005
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Oral & Maxillofacial Surgery (D.M.D.) | 204E00000X | A91464 | CA | Primary |
Addresses
Primary practice location
10811 Ashton Ave
#308
Los Angeles, CA 90024-4878
Mailing address
10811 Ashton Ave
#308
Los Angeles, CA 90024-4878
Phone (310) 446-1368
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A91464 | CA | MD | Oral & Maxillofacial Surgery (D.M.D.) |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1123632000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1851392062",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "10811 ASHTON AVE",
"address_2": "#308",
"city": "LOS ANGELES",
"state": "CA",
"postal_code": "900244878",
"telephone_number": "310-446-1368"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "10811 ASHTON AVE",
"address_2": "#308",
"city": "LOS ANGELES",
"state": "CA",
"postal_code": "900244878",
"telephone_number": "310-446-1368"
}
],
"practiceLocations": [],
"basic": {
"last_name": "TSAY",
"first_name": "RICK",
"middle_name": "CHIEN CHI",
"name_prefix": "Dr.",
"credential": "D.M.D, M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-08-10",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "204E00000X",
"taxonomy_group": "",
"desc": "Oral & Maxillofacial Surgery",
"state": "CA",
"license": "A91464",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Los Angeles, CA
Sources for this page
- 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.