Peter Epstein, LMFT
Peter Epstein, LMFT is a Marriage & Family Therapist in Mission Viejo, CA, registered under NPI 1003681305. 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 Mission Viejo, based on OpenStreetMap data collected Oct 14, 2026. Parking is available about 0.39 mi away. The nearest transit stop is 507 ft away, served by Marguerite-La Paz. A pharmacy sits 0.42 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.41 mi away.
Getting here and what is nearby
Restaurant Diho Siam 268 ft ~2 min
Transit Marguerite/La Paz 440 ft ~2 min
Transit Marguerite-La Paz 444 ft ~2 min
Transit Marguerite-La Paz 507 ft ~2 min
Gas station Arco 503 ft ~2 min
25122 Marguerite Parkway, Mission Viejo 92692
Restaurant Nice Burger 571 ft ~3 min
Restaurant El Pollo Loco 659 ft ~3 min
25110 Marguerite Parkway, Mission Viejo 92692
Grocery Ralphs 846 ft ~4 min
25104 Marguerite Parkway, Mission Viejo 92692
Mo-Su 06:00-01:00
Parking 0.32 mi ~7 min
Parking 0.34 mi ~7 min
Grocery Trader Joe's 0.37 mi ~8 min
25410 Marguerite Parkway, Mission Viejo 92692
Mo-Su 09:00-21:00
Parking 0.39 mi ~8 min
Coffee It's A Grind 0.41 mi ~9 min
Pharmacy Walgreens 0.42 mi ~9 min
25533 Marguerite Parkway, Mission Viejo 92692
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 |
|---|---|---|
| 160202 | CA | Marriage & Family Therapist primary |
This provider holds licence 160202 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 | 1003681305 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 16, 2023 |
| Last updated | Jul 3, 2026 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | LMFT |
| Practice address |
27001 LA PAZ RD STE 278A Mission Viejo, CA 92691 (714) 248-5548 |
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 | 6 | 8 | 1 | 3 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 8 | 2 | 3 | 0 |
Sum = 45 · next multiple of 10 = 50 · check digit = 5 · actual last digit = 5
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.