CALIFORNIA PORTSMOUTH SQUARE ASSOCIATION
CALIFORNIA PORTSMOUTH SQUARE ASSOCIATION is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1477172864, based in Richmond, CA. The organization lists 13 taxonomy classifications, with Mental Illness Community Based Residential Treatment Facility recorded as primary.
Getting there
The practice address on file is 686 HUMBOLDT ST, Richmond, CA 94805. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Community Based Residential Treatment Facility, Mental Illness covers
A home-like residential facility providing psychiatric treatment and psycho/social rehabilitative services to individuals diagnosed with mental illness. NUCC Health Care Provider Taxonomy, code 320800000X
All registered taxonomy codes
This provider registers 13 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 320800000X | Mental Illness Community Based Residential Treatment Facility | — | — | primary |
| 101YM0800X | Mental Health Counselor Mental Health | — | — | |
| 251B00000X | Case Management Agency | — | — | |
| 251K00000X | Public Health or Welfare Agency | — | — | |
| 251S00000X | Community/Behavioral Health Agency | — | — | |
| 252Y00000X | Early Intervention Provider Agency | — | — | |
| 253J00000X | Foster Care Agency | — | — | |
| 305R00000X | Preferred Provider Organization | — | — | |
| 311Z00000X | Custodial Care Facility | — | — | |
| 322D00000X | Emotionally Disturbed Childrens' Residential Treatment Facility | — | — | |
| 343900000X | Non-emergency Medical Transport (VAN) | — | — | |
| 347C00000X | Private Vehicle | — | — | |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — |
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1477172864 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Apr 15, 2020 |
| Last updated | Jul 10, 2025 |
| Status | Active |
| Practice address |
686 HUMBOLDT ST Richmond, CA 94805 (510) 236-3388 |
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 | 4 | 7 | 7 | 1 | 7 | 2 | 8 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 5 | 7 | 2 | 7 | 4 | 8 | 3 |
Sum = 66 · next multiple of 10 = 70 · check digit = 4 · actual last digit = 4
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.