Sydney Hollingsworth
Sydney Hollingsworth is a Marriage & Family Therapist in Hayward, CA, registered under NPI 1003447251. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Hayward, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 832 ft away. The nearest transit stop is 804 ft away, served by Silva Avenue & Thomas Avenue.
Getting here and what is nearby
Parking 408 ft ~2 min
Parking 435 ft ~2 min
Transit Silva Avenue & Leighton Street 723 ft ~3 min
Transit Meek Avenue & Jackson Street 727 ft ~3 min
Transit Silva Avenue & Thomas Avenue 804 ft ~4 min
Parking 832 ft ~4 min
Gas station Valero 0.27 mi ~6 min
Restaurant McDonald's 0.37 mi ~8 min
23989 Watkins Street, Hayward 94544-1028
05:30-22:00
Restaurant Giant Burger 0.40 mi ~9 min
241340 Mission Boulevard
Gas station Chevron 0.42 mi ~9 min
Convenience ExtraMile 0.43 mi ~9 min
24086 Mission Boulevard
Hotel Days Inn & Suites by Wyndham Hayward 0.44 mi ~9 min
24400 Mission Boulevard, Hayward 94544
Restaurant Favorite Indian Restaurant 0.44 mi ~9 min
24052 Mission Boulevard
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 |
|---|---|---|
| 144532 | CA | Marriage & Family Therapist primary |
This provider holds licence 144532 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 | 144532 | CA | primary |
| 106S00000X | Behavior Technician | — | — |
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 | 1003447251 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 27, 2020 |
| Last updated | Jul 16, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
409 JACKSON ST Hayward, CA 94544 (510) 891-5600 Fax (510) 844-3385 |
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 | 4 | 4 | 7 | 2 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 4 | 5 | 2 | 1 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.