CARLOS C SAY M.D. INC
CARLOS C SAY M.D. INC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1063722635, based in Atwater, CA. The organization lists 6 taxonomy classifications, with Adult Medicine Physician recorded as primary.
Getting there
The practice address on file is 329 EAST BELLEVUE RD, Atwater, CA 95301. 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 |
|---|---|---|
| A267020 | CA | Adult Medicine Physician primary |
| A267020 | CA | Trauma Surgery Physician |
| A267020 | CA | Surgical Oncology Physician |
| A267020 | CA | Hematology & Oncology Physician |
| A267020 | CA | Gastroenterology Physician |
| A267020 | CA | Surgery Physician |
This provider holds licence A267020 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
- 9436344579
- Enrollment ID
- O20101115000437
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 Adult Medicine covers
The NUCC recommends this code not be used. Choose a more appropriate code. NUCC Health Care Provider Taxonomy, code 207QA0505X
All registered taxonomy codes
This provider registers 6 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207QA0505X | Adult Medicine Physician Adult Medicine | A267020 | CA | primary |
| 2086S0127X | Trauma Surgery Physician Trauma Surgery | A267020 | CA | |
| 2086X0206X | Surgical Oncology Physician Surgical Oncology | A267020 | CA | |
| 207RH0003X | Hematology & Oncology Physician Hematology & Oncology | A267020 | CA | |
| 207RG0100X | Gastroenterology Physician Gastroenterology | A267020 | CA | |
| 208600000X | Surgery Physician | A267020 | 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 | 1063722635 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Oct 18, 2010 |
| Last updated | Oct 20, 2025 |
| Status | Active |
| Practice address |
329 EAST BELLEVUE RD Atwater, CA 95301 (209) 358-6494 Fax (209) 358-6498 |
| Mailing address |
329 E BELLEVUE RD Atwater, CA 95301 |
| Other identifiers |
1871594085
· 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 | 6 | 3 | 7 | 2 | 2 | 6 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 3 | 3 | 5 | 2 | 4 | 6 | 6 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.