MARIN TREATMENT CENTER
MARIN TREATMENT CENTER is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1437377421, based in San Rafael, CA. The organization lists 2 taxonomy classifications, with Methadone Clinic recorded as primary.
Getting there
The practice address on file is 1466 LINCOLN AVE, San Rafael, CA 94901. 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
| Licence | State | Specialty |
|---|---|---|
| 21-70 | CA | Methadone Clinic primary |
| 110000417 | CA | Primary Care Clinic/Center |
This provider holds licence 21-70 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 2860765161
Enrolled in Medicare 2 times, across 1 state:
| State | Enrollment ID | Provider type |
|---|---|---|
| California | O20170908000574 | Part B Supplier - Clinic/group Practice |
| California | O20191213001730 | Part B Supplier - Opioid Treatment Program (otp) |
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. There are 2 separate enrolment records. Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Methadone covers
An entity, facility, or distinct part of a facility providing diagnostic, and replacement maintenance treatment services related to individuals with drug addiction. NUCC Health Care Provider Taxonomy, code 261QM2800X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 261QM2800X | Methadone Clinic Methadone | 21-70 | CA | primary |
| 261QP2300X | Primary Care Clinic/Center Primary Care | 110000417 | CA |
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 | 1437377421 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Apr 23, 2007 |
| Last updated | Mar 10, 2025 |
| Status | Active |
| Practice address |
1466 LINCOLN AVE San Rafael, CA 94901 (415) 457-3755 Fax (415) 457-9516 |
| Other identifiers |
ZZR11863F
· Medicaid (CA) CMM70602F · Medicaid (CA) 00G265381 · Medicaid (CA) EAP70602F · Medicaid (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 | 4 | 3 | 7 | 3 | 7 | 7 | 4 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 6 | 7 | 6 | 7 | 5 | 4 | 4 |
Sum = 69 · next multiple of 10 = 70 · 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.