MONTEREY BAY ONCOLOGY A MEDICAL CORPORATION
MONTEREY BAY ONCOLOGY A MEDICAL CORPORATION is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1972542959, based in Monterey, CA. The organization lists 2 taxonomy classifications, with Hematology & Oncology Physician recorded as primary.
Getting there
The practice address on file is 5 HARRIS CT, BLDG T, STE. 201, Monterey, CA 93940. 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.
- Status
- Approved
- Provider type
- Part B Supplier - Clinic/group Practice
- PAC ID
- 6507826856
Enrolled in Medicare 3 times, across 1 state:
| State | Enrollment ID | Provider type |
|---|---|---|
| California | O20041012001045 | Part B Supplier - Clinic/group Practice |
| California | O20100930058255 | Dme Supplier - Physician - Hematology/oncology |
| California | O20250915002376 | Part B Supplier - Radiation Therapy Center |
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. There are 3 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 Hematology & Oncology covers
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered. NUCC Health Care Provider Taxonomy, code 207RH0003X
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 | |
|---|---|---|---|---|
| 207RH0003X | Hematology & Oncology Physician Hematology & Oncology | — | — | primary |
| 261QX0203X | Radiation Oncology Clinic/Center Oncology, Radiation | — | — |
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 | 1972542959 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jun 6, 2006 |
| Last updated | May 14, 2026 |
| Status | Active |
| Practice address |
5 HARRIS CT, BLDG T, STE. 201 Monterey, CA 93940 (831) 375-4105 Fax (831) 372-5722 |
| Mailing address |
5 HARRIS CT STE 201 Monterey, CA 93940 |
| Other identifiers |
ZZZ52494Z
· Other (CA) GR0080140 · 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 | 9 | 7 | 2 | 5 | 4 | 2 | 9 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 5 | 2 | 1 | 4 | 4 | 9 | 1 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.