Samantha Nguyen, MS,AMFT
Samantha Nguyen, MS,AMFT is a Marriage & Family Therapist in Diamond Bar, CA, registered under NPI 1003321050. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Diamond Bar, based on OpenStreetMap data collected Sep 18, 2026. Parking is available about 0.22 mi away. There is EV charging 0.50 mi from the office (Tesla Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 674 ft away, served by Foothil Transit 482.
Getting here and what is nearby
Transit Foothill Transit 482, 853, 854 522 ft ~2 min
Transit Foothill Transit 482 584 ft ~3 min
Transit Foothil Transit 482 674 ft ~3 min
Parking 780 ft ~3 min
Parking 0.21 mi ~5 min
Parking 0.22 mi ~5 min
Hotel Holiday Inn 0.29 mi ~6 min
Grocery Diamond Fresh Farmers Market 0.45 mi ~10 min
21168 Golden Springs Drive, Diamond Bar 91765
EV charging 0.47 mi ~10 min
Restaurant Seoul BBQ 0.48 mi ~10 min
Restaurant Jasmine Mediterranean & Persian 0.48 mi ~10 min
21130 Golden Springs Drive, 91789
We-Mo 11:00-22:00; Tu 00:00-00:00
EV charging 0.49 mi ~10 min
EV charging Tesla Supercharger 0.50 mi ~10 min
Gas station Mobil 0.50 mi ~11 min
1024 Brea Canyon Road, Diamond Bar 91765
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 118775 | CA | Marriage & Family Therapist primary |
| 101757 | CA | Marriage & Family Therapist |
This provider holds licence 118775 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Marriage & Family Therapist covers
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups. NUCC Health Care Provider Taxonomy, code 106H00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 106H00000X | Marriage & Family Therapist | 118775 | CA | primary |
| 106H00000X | Marriage & Family Therapist | 101757 | CA |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003321050 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 12, 2017 |
| Last updated | Dec 1, 2021 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | MS,AMFT |
| Practice address |
1336 BRIDGEGATE DR Diamond Bar, CA 91765 (626) 960-4844 |
| Mailing address |
18350 MOUNT LANGLEY ST STE 220 Fountain Valley, CA 92708 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 3 | 2 | 1 | 0 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 2 | 2 | 0 | 1 |
Sum = 40 · next multiple of 10 = 40 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.