Nancy Celio, M.F.T.
Nancy Celio, M.F.T. is a Marriage & Family Therapist in Fullerton, CA, registered under NPI 1003156829. 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 Fullerton, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 0.27 mi away at Fullerton Transportation Center Parking Structure. There is EV charging 0.39 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 464 ft away, served by Chapman-Harbor. If you arrive early, there is a coffee shop 0.37 mi away.
Getting here and what is nearby
Coffee The Brownstone Cafe 59 ft ~1 min
305 North Harbor Boulevard, Fullerton 92832
Mo-Su 07:00-15:30
Grocery The British Grocer 86 ft ~1 min
Parking 136 ft ~1 min
Coffee The Smoking Tiger Coffee and Bread 207 ft ~1 min
Mo-Su 07:00-19:00
Transit Harbor-Chapman 296 ft ~2 min
Restaurant Roman Cucina 331 ft ~2 min
Mo-Su 17:00-21:00
Transit Harbor-Chapman 360 ft ~2 min
Transit Chapman-Harbor 464 ft ~2 min
Restaurant UbaTuba 573 ft ~3 min
130 E Chapman Ave, Fullerton 92832-2095
Restaurant McDonald's 733 ft ~3 min
119 East Chapman Avenue, Fullerton 92832
07:00-20:00
Convenience King's Group Smoke 0.20 mi ~5 min
Parking Fullerton College Student Parking Structure 0.23 mi ~5 min
230 East Chapman Avenue
Parking Fullerton Transportation Center Parking Structure 0.27 mi ~6 min
150 West Santa Fe Avenue
Coffee McClain's Coffeehouse 0.37 mi ~8 min
EV charging ChargePoint 0.38 mi ~8 min
EV charging ChargePoint 0.39 mi ~8 min
EV charging ChargePoint 0.39 mi ~8 min
Convenience Circle K 0.43 mi ~9 min
Gas station Arco 0.47 mi ~10 min
Gas station Ralph's Gas Station 0.47 mi ~10 min
Convenience Lowe's Wilshire Market 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 |
|---|---|---|
| MFC45101 | CA | Marriage & Family Therapist primary |
This provider holds licence MFC45101 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 | 1003156829 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 15, 2013 |
| Last updated | Feb 15, 2013 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | M.F.T. |
| Practice address |
305 N HARBOR BLVD 202 Fullerton, CA 92832 (714) 721-3991 Fax (714) 525-0834 |
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 | 1 | 5 | 6 | 8 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 5 | 3 | 8 | 4 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.