Claire Jacobs, MD, PHD
Claire Jacobs, MD, PHD is an Epilepsy Physician in Boston, MA, registered under NPI 1689929333. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 55 FRUIT ST, Boston, MA 02114. 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 |
|---|---|---|
| 261391 | MA | Epilepsy Physician primary |
| 255048 | MA | Neurology Physician |
This provider holds licence 261391 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 - Epileptologists
- PAC ID
- 7810121092
- Enrollment ID
- I20180719000794
Medicare enrolment is recorded as approved under the provider type Practitioner - Epileptologists. 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 Epilepsy covers
Epilepsy is a subspecialty of neurology focused on the diagnosis and treatment of patients with epilepsy, including new-onset, medically refractory epilepsy, psychogenic nonepileptic seizures, and epilepsy in special populations (the elderly, women, patients with co-morbidities). Epilepsy is a multidisciplinary field that provides comprehensive care of the patient.<br/> NUCC Health Care Provider Taxonomy, code 2084E0001X
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 | |
|---|---|---|---|---|
| 2084E0001X | Epilepsy Physician Epilepsy | 261391 | MA | primary |
| 2084N0400X | Neurology Physician Neurology | 255048 | 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 | 1689929333 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 18, 2012 |
| Last updated | Jun 4, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD, PHD |
| Practice address |
55 FRUIT ST Boston, MA 02114 (617) 726-2000 |
| Mailing address |
75 FRANCIS ST DEPARTMENT OF NEUROLOGY Boston, MA 02115 |
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 | 6 | 8 | 9 | 9 | 2 | 9 | 3 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 6 | 7 | 9 | 9 | 2 | 9 | 3 | 6 |
Sum = 77 · next multiple of 10 = 80 · 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.