Erin Hennessy
Erin Hennessy is a Marriage & Family Therapist in San Francisco, CA, registered under NPI 1003251869.
Getting there
Here is what surrounds this office in San Francisco, based on OpenStreetMap data collected Sep 14, 2026. Parking is available about 0.24 mi away. The nearest transit stop is 489 ft away, served by Folsom Street & Bessie Street. If you arrive early, there is a coffee shop 0.33 mi away.
Getting here and what is nearby
Parking 113 ft ~1 min
Transit Folsom Street & Stoneman Street 226 ft ~1 min
Transit Folsom Street & Stoneman Street 293 ft ~2 min
Restaurant Precita Social 387 ft ~2 min
300 Precita Avenue, San Francisco 94110
Transit Folsom Street & Bessie Street 489 ft ~2 min
Convenience Harvest Hills Market 451 ft ~2 min
3216 Folsom Street
Coffee Charlie's Cafe 564 ft ~3 min
3202 Folsom Street
Coffee Precita Park Cafe 816 ft ~4 min
Parking 896 ft ~4 min
Convenience Sam's Market 0.22 mi ~5 min
Parking 0.24 mi ~5 min
Grocery Rubin's Market 0.26 mi ~6 min
2997 Folsom Street, San Francisco
Gas station Speedway Express 0.27 mi ~6 min
3300 Cesar Chavez Street
Restaurant Tacos El Patron 0.29 mi ~6 min
1500 South Van Ness Avenue, San Francisco 94110
Convenience Vic’s Grocery Liquor 0.30 mi ~7 min
3300 26th Street
Coffee The Fold 0.33 mi ~7 min
Restaurant El Honduras 0.34 mi ~7 min
Grocery Casa Guadalupe 0.35 mi ~8 min
Grocery Casa Guadalupe 0.37 mi ~8 min
Gas station National Petroleum 0.40 mi ~9 min
2831 Cesar Chavez Street, San Francisco 94110
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 |
|---|---|---|
| 85084 | CA | Marriage & Family Therapist primary |
This provider holds licence 85084 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 | 1003251869 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 7, 2013 |
| Last updated | Jan 30, 2015 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1550 TREAT AVE San Francisco, CA 94110 (415) 641-8000 Fax (415) 641-8002 |
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 | 2 | 5 | 1 | 8 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 5 | 2 | 8 | 3 |
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.