Jeffrey Factor, MD
Jeffrey Factor, MD is a Pediatric Allergy/Immunology Physician in West Hartford, CT, registered under NPI 1457332298. 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 836 FARMINGTON AVENUE SUITE 207, West Hartford, CT 06119. 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 |
|---|---|---|
| 31434 | CT | Pediatric Allergy/Immunology Physician primary |
| 031434 | CT | Allergy & Immunology Physician |
| 031434 | CT | Clinical & Laboratory Immunology (Allergy… |
This provider holds licence 31434 issued in CT. 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 - Allergy/immunology
- PAC ID
- 6608865191
- Enrollment ID
- I20250627000827
Medicare enrolment is recorded as approved under the provider type Practitioner - Allergy/immunology. 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 Pediatric Allergy/Immunology covers
A pediatrician who specializes in the diagnosis and treatment of allergies, allergic reactions, and immunologic diseases in children. NUCC Health Care Provider Taxonomy, code 2080P0201X
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 | |
|---|---|---|---|---|
| 2080P0201X | Pediatric Allergy/Immunology Physician Pediatric Allergy/Immunology | 31434 | CT | primary |
| 207K00000X | Allergy & Immunology Physician | 031434 | CT | |
| 207KI0005X | Clinical & Laboratory Immunology (Allergy & Immunology) Physician Clinical & Laboratory Immunology | 031434 | CT |
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 | 1457332298 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 9, 2005 |
| Last updated | Apr 14, 2022 |
| Status | Active |
| Sole proprietor | No |
| Credential | MD |
| Practice address |
836 FARMINGTON AVENUE SUITE 207 West Hartford, CT 06119 (860) 232-9911 Fax (860) 233-5996 |
| Other identifiers |
010031434CT01
· Other 131576 · Other 00131434300 · Other 001314343 · Medicaid (CT) 004394508 · Other 0139300005 · Other OS2162 · Other P2666155 · Other 023998 · Other 043518 · Other |
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 | 4 | 5 | 7 | 3 | 3 | 2 | 2 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 1 | 7 | 6 | 3 | 4 | 2 | 9 |
Sum = 62 · next multiple of 10 = 70 · check digit = 8 · actual last digit = 8
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.