Julia Di Rienzo, MFT
Julia Di Rienzo, MFT is a Marriage & Family Therapist in Walnut Creek, CA, registered under NPI 1003056631. 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 Walnut Creek, based on OpenStreetMap data collected Sep 2, 2026. Parking is available about 772 ft away at Kaiser employee overflow parking. There is EV charging 0.32 mi from the office (Walnut Creek Supercharger) — useful if you are driving in from out of town. The nearest transit stop is 568 ft away, served by South Broadway & Newell Avenue. A pharmacy sits 0.49 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Restaurant George's Giant Hamburger 324 ft ~2 min
1491 Newell Avenue, Walnut Creek 94596
Mo-Sa 11:00-20:00
Transit Newell Avenue & South Main Street 354 ft ~2 min
Parking 384 ft ~2 min
Parking 399 ft ~2 min
Grocery Whole Foods Market 441 ft ~2 min
1333 Newell Avenue, Walnut Creek 94596
Mo-Su 08:00-21:00
Transit South Main Street & Newell Avenue 512 ft ~2 min
Transit South Broadway & Newell Avenue 568 ft ~3 min
Restaurant The Cooperage American Grille 567 ft ~3 min
Restaurant Sala Mediterranean Grill 606 ft ~3 min
1348 Broadway Plaza, Walnut Creek 94596
Parking Kaiser employee overflow parking 772 ft ~3 min
Coffee Starbucks 982 ft ~4 min
Grocery Trader Joe's 0.20 mi ~5 min
1372 South California Boulevard, Walnut Creek 94596
Mo-Su 08:00-21:00
Gas station Flyers Energy 0.22 mi ~5 min
Gas station Mobil 0.25 mi ~6 min
Gas station Kwik Serv 0.26 mi ~6 min
EV charging Walnut Creek Supercharger 0.32 mi ~7 min
Grocery Safeway 0.36 mi ~8 min
Coffee Chagee 0.37 mi ~8 min
1500 Mount Diablo Boulevard, Walnut Creek 94596
Coffee Starbucks 0.39 mi ~8 min
Pharmacy CVS Pharmacy 0.49 mi ~10 min
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 |
|---|---|---|
| MFC43595 | CA | Marriage & Family Therapist primary |
This provider holds licence MFC43595 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
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 | 1003056631 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 22, 2009 |
| Last updated | Feb 22, 2009 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | MFT |
| Practice address |
1460 MARIA LANE STE 310 Walnut Creek, CA 94596 (925) 937-9707 Fax (925) 299-1928 |
| Mailing address |
PO BOX 623 Lafayette, CA 94549 |
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 | 0 | 5 | 6 | 6 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 5 | 3 | 6 | 6 |
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.