Fei Song, MD
Fei Song, MD is a Hematology (Internal Medicine) Physician in Burlington, MA, registered under NPI 1992153183. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 41 MALL RD, Burlington, MA 01805. 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 |
|---|---|---|
| 277965 | MA | Hematology (Internal Medicine) Physician primary |
| 267040 | MA | Internal Medicine Physician |
| 277965 | MA | Hospitalist Physician |
This provider holds licence 277965 issued in MA. 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
- Practitioner - Hematology
- PAC ID
- 7810283728
- Enrollment ID
- I20190514001565
Medicare enrolment is recorded as approved under the provider type Practitioner - Hematology. 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 covers
An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma. NUCC Health Care Provider Taxonomy, code 207RH0000X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207RH0000X | Hematology (Internal Medicine) Physician Hematology | 277965 | MA | primary |
| 207R00000X | Internal Medicine Physician | 267040 | MA | |
| 208M00000X | Hospitalist Physician | 277965 | 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-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 | 1992153183 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 27, 2016 |
| Last updated | Apr 23, 2024 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
41 MALL RD Burlington, MA 01805 (781) 744-8000 |
| Mailing address |
800 WASHINGTON ST Boston, MA 02111 |
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 | 9 | 2 | 1 | 5 | 3 | 1 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 9 | 9 | 2 | 2 | 5 | 6 | 1 | 7 |
Sum = 67 · next multiple of 10 = 70 · check digit = 3 · actual last digit = 3
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.