BAY HORIZON ICF-DDH
BAY HORIZON ICF-DDH is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003208281, based in San Mateo, CA. It is classified under Intellectual and/or Developmental Disabilities Community Based Residential Treatment Facility.
Getting there
Here is what surrounds this office in San Mateo, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 0.38 mi away at Third Ave Park And Ride. The nearest transit stop is 0.21 mi away, served by J. Hart Clinton Drive & South Norfolk Street.
Getting here and what is nearby
Parking 586 ft ~3 min
Parking 880 ft ~4 min
Transit South Norfolk Street & Shoreview Avenue 0.20 mi ~4 min
Transit South Norfolk Street & Shoreview Avenue 0.21 mi ~5 min
Transit J. Hart Clinton Drive & South Norfolk Street 0.21 mi ~5 min
Restaurant Tabla Indian Restaurant - San Mateo 0.25 mi ~6 min
Parking Third Ave Park And Ride 0.38 mi ~8 min
Ne Quad Us 101 / 3rd Ave Off Lindbergh, San Mateo 94401
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 |
|---|---|---|
| 220000319 | CA | Intellectual and/or Developmental… primary |
This provider holds licence 220000319 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 Community Based Residential Treatment Facility, Intellectual and/or Developmental Disabilities covers
A home-like residential facility providing habilitation, support and monitoring services to individuals diagnosed with intellectual and/or developmental disabilities. NUCC Health Care Provider Taxonomy, code 320900000X
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 | 1003208281 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Feb 25, 2015 |
| Last updated | Feb 25, 2015 |
| Status | Active |
| Practice address |
516 OCEAN VIEW AVE San Mateo, CA 94401 (650) 347-1164 Fax (650) 348-2795 |
| Mailing address |
1565 ROYAL AVE San Mateo, CA 94401 |
| Other identifiers |
LTC60671G
· Other (CA) |
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 | 0 | 8 | 2 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 0 | 7 | 2 | 7 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.