BRETT V. CURTIS, MD, A PROFESSIONAL CORPORATION, INC.
BRETT V. CURTIS, MD, A PROFESSIONAL CORPORATION, INC. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1346372661, based in San Rafael, CA. The organization lists 13 taxonomy classifications, with Occupational Medicine Clinic/Center recorded as primary.
Getting there
The practice address on file is 411 3RD ST, 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 |
|---|---|---|
| 20068 | CA | General Practice Physician |
This provider holds licence 20068 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
- 6507194297
- Enrollment ID
- O20190819003338
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. 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 Occupational Medicine covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QX0100X
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 | |
|---|---|---|---|---|
| 261QX0100X | Occupational Medicine Clinic/Center Occupational Medicine | — | — | primary |
| 247100000X | Radiologic Technologist | — | — | |
| 261QP2000X | Physical Therapy Clinic/Center Physical Therapy | — | — | |
| 363LX0106X | Occupational Health Nurse Practitioner Occupational Health | — | — | |
| 363LA2100X | Acute Care Nurse Practitioner Acute Care | — | — | |
| 363A00000X | Physician Assistant | — | — | |
| 171100000X | Acupuncturist | — | — | |
| 208D00000X | General Practice Physician | 20068 | CA | |
| 261QU0200X | Urgent Care Clinic/Center Urgent Care | — | — | |
| 261QC1800X | Corporate Health Clinic/Center Corporate Health | — | — | |
| 111NR0400X | Rehabilitation Chiropractor Rehabilitation | — | — | |
| 111N00000X | Chiropractor | — | — | |
| 261Q00000X | Clinic/Center | — | — |
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 | 1346372661 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Mar 12, 2007 |
| Last updated | Sep 26, 2025 |
| Status | Active |
| Practice address |
411 3RD ST San Rafael, CA 94901 (415) 924-4525 Fax (415) 924-2539 |
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 | 3 | 4 | 6 | 3 | 7 | 2 | 6 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 8 | 6 | 6 | 7 | 4 | 6 | 3 |
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.