BORIS KARPOVSKY, M.D., LLC
BORIS KARPOVSKY, M.D., LLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1841495116, based in Brighton, MA. The organization lists 2 taxonomy classifications, with Hematology & Oncology Physician recorded as primary.
Getting there
The practice address on file is 280 WASHINGTON ST SUITE 304, Brighton, MA 02135. 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 |
|---|---|---|
| 43860 | MA | Hematology & Oncology Physician primary |
| 43860 | MA | Internal Medicine Physician |
This provider holds licence 43860 issued in MA. 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 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 | 43860 | MA | primary |
| 207R00000X | Internal Medicine Physician | 43860 | MA |
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 | 1841495116 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jun 18, 2007 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Practice address |
280 WASHINGTON ST SUITE 304 Brighton, MA 02135 (617) 789-5333 Fax (617) 789-4457 |
| Mailing address |
199 COOLIDGE AVE UNIT 313 Watertown, MA 02472 |
| Other identifiers |
J10609
· Other (MA) 646734 · Other (MA) 3073424 · Medicaid (MA) |
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 | 8 | 4 | 1 | 4 | 9 | 5 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 8 | 8 | 1 | 8 | 9 | 1 | 1 | 2 |
Sum = 64 · next multiple of 10 = 70 · check digit = 6 · actual last digit = 6
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.