Karena Petersen, MARRIAGE FAMILY THER
Karena Petersen, MARRIAGE FAMILY THER is a Marriage & Family Therapist in Campbell, CA, registered under NPI 1003025586. 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 Campbell, based on OpenStreetMap data collected Aug 30, 2026. Parking is available about 0.21 mi away. There is EV charging 0.50 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 857 ft away, served by South Winchester Boulevard & Impala Drive. A pharmacy sits 758 ft from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.42 mi away.
Getting here and what is nearby
Restaurant Khanh's Restaurant 261 ft ~1 min
150 East Hamilton Avenue, Campbell 95008
Transit East Hamilton Avenue & South Winchester Boulevard 349 ft ~2 min
Restaurant Mama Mia's 348 ft ~2 min
200 East Hamilton Avenue, Campbell 95008
Pharmacy Walgreens 758 ft ~3 min
Transit South Winchester Boulevard & East Hamilton Avenue 842 ft ~4 min
Transit South Winchester Boulevard & Impala Drive 857 ft ~4 min
Restaurant Burger King 876 ft ~4 min
49 West Hamilton Avenue, Campbell 95008
Mo-Sa 06:00-10:00; Su 07:00-24:00
Coffee 7 Leaves Cafe 934 ft ~4 min
330 East Hamilton Avenue, Campbell 95008
Mo-Fr 07:00-22:00; Sa-Su 08:00-22:00
Gas station True Zero 976 ft ~4 min
Gas station Alliance Gas Station & Repair 0.20 mi ~5 min
Parking 0.20 mi ~5 min
Parking 0.20 mi ~5 min
Parking 0.21 mi ~5 min
Convenience Rotten Robbie 0.24 mi ~5 min
370 East Hamilton Avenue, Campbell 95008
Gas station Rotten Robbie 0.24 mi ~5 min
370 East Hamilton Avenue, Campbell 95008
Convenience 7-Eleven 0.25 mi ~5 min
Coffee Starbucks 0.42 mi ~9 min
Convenience Chevron 0.49 mi ~10 min
1301 South Winchester Boulevard, San Jose 95128
EV charging ChargePoint 0.50 mi ~10 min
Grocery Safeway 0.50 mi ~10 min
1305 South Winchester Boulevard, San Jose 95128-4320
Mo-Su 05:00-24:00
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 |
|---|---|---|
| MFC38953 | CA | Marriage & Family Therapist primary |
This provider holds licence MFC38953 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 | 1003025586 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 22, 2007 |
| Last updated | Jan 5, 2019 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | MARRIAGE FAMILY THER |
| Practice address |
137 E HAMILTON AVE STE 204 Campbell, CA 95008 (408) 772-0644 Fax (408) 364-1684 |
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 | 2 | 5 | 5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 2 | 1 | 5 | 7 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
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.