Stephen Fiascone, MD
Stephen Fiascone, MD is a Gynecologic Oncology Physician in Boston, MA, registered under NPI 1982967444.
Getting there
The practice address on file is 850 HARRISON AVE # YACC5, Boston, MA 02118. 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 |
|---|---|---|
| 265730 | MA | Gynecologic Oncology Physician primary |
This provider holds licence 265730 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 Gynecologic Oncology covers
An obstetrician/gynecologist who provides consultation and comprehensive management of patients with gynecologic cancer, including those diagnostic and therapeutic procedures necessary for the total care of the patient with gynecologic cancer and resulting complications. NUCC Health Care Provider Taxonomy, code 207VX0201X
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-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1982967444 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 20, 2012 |
| Last updated | May 30, 2019 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
850 HARRISON AVE # YACC5 Boston, MA 02118 (617) 414-2000 Fax (617) 414-5798 |
| Mailing address |
720 HARRISON AVE # DOB503 Boston, MA 02118 |
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 | 8 | 2 | 9 | 6 | 7 | 4 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 7 | 2 | 9 | 6 | 5 | 4 | 8 |
Sum = 76 · next multiple of 10 = 80 · check digit = 4 · actual last digit = 4
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.