Active NPI
Duy Nguyen
- Psychiatry Physician
- San Mateo, CA
National Provider Identifier
1639788425
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- A188952
- Practice address
- 999 Baker Way Ste 150
San Mateo, CA 94404-1581 - Phone
- (855) 501-1004
- NPI assigned
- Jul 28, 2020
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | A188952 | CA | Primary |
| Student in an Organized Health Care Education/Training Program | 390200000X |
Addresses
Primary practice location
999 Baker Way Ste 150
San Mateo, CA 94404-1581
Mailing address
904 87TH St
Daly City, CA 94015-3630
Phone (279) 204-5314
Other practice location 1
155 N Fresno St
Fresno, CA 93701-2302
Phone (279) 204-5314
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 10533 | Other | CA | MEDICAL LICENSE (PHYSICIAN AND SURGEON A) |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Care Compare profile
Medicare Care Compare- Specialty
- Psychiatry
- Education
- Other, 2022
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
3835 N Fwy Blvd
Suite 100
Sacramento, CA 95834-1954
3835 N Fwy Blvd 100
Sacramento, CA 95834-1954
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 188952 | CA | MD | Psychiatry Physician |
Interoperability endpoints
- duy.nguyen.1@31788.direct.athenahealth.com
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1595894400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1787616000000",
"number": "1639788425",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "904 87TH ST",
"city": "DALY CITY",
"state": "CA",
"postal_code": "940153630",
"telephone_number": "279-204-5314"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "999 BAKER WAY STE 150",
"city": "SAN MATEO",
"state": "CA",
"postal_code": "944041581",
"telephone_number": "855-501-1004"
}
],
"practiceLocations": [
{
"address_1": "155 N Fresno St",
"address_purpose": "LOCATION",
"city": "Fresno",
"state": "CA",
"postal_code": "937012302",
"country_code": "US",
"telephone_number": "279-204-5314",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "NGUYEN",
"first_name": "DUY",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2020-07-28",
"last_updated": "2026-08-25",
"certification_date": "2026-08-25",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "CA",
"license": "A188952",
"primary": true
},
{
"code": "390200000X",
"taxonomy_group": "",
"desc": "Student in an Organized Health Care Education/Training Program",
"state": null,
"license": null,
"primary": false
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "MEDICAL LICENSE (PHYSICIAN AND SURGEON A)",
"identifier": "10533",
"state": "CA"
}
],
"endpoints": [],
"other_names": []
}Other providers in San Mateo, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 25, 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.