Francesca Montanari, MD
Francesca Montanari, MD is a Hematology (Internal Medicine) Physician in Greenwich, CT, registered under NPI 1003134586.
Getting there
Here is what surrounds this office in Greenwich, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 462 ft away. If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Parking 283 ft ~2 min
Parking 377 ft ~2 min
Parking 462 ft ~2 min
Coffee Starbucks 0.22 mi ~5 min
Grocery Whole Foods Market 0.23 mi ~5 min
90 East Putnam Avenue, Greenwich 06830
Mo-Su 07:00-21:00
Restaurant Kira Sushi 0.33 mi ~7 min
Hotel Stanton House Inn 0.38 mi ~8 min
76 Maple Avenue, Greenwich 06830
Mo-Sa 07:30-19:00; Su 07:30-16:00
Coffee Cady's Tea Room 0.39 mi ~8 min
Restaurant Planet Pizza 0.43 mi ~9 min
Restaurant CAVA 0.43 mi ~9 min
Grocery Stop & Shop 0.46 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 271458 | NY | Hematology (Internal Medicine) Physician primary |
This provider holds licence 271458 issued in NY. 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 - Medical Oncology
- PAC ID
- 2860792934
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| New York | I20160727001907 | Practitioner - Medical Oncology |
| Connecticut | I20201130002290 | Practitioner - Hematology/oncology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Medical Oncology. There are 2 separate enrolment records across 2 states (NY, CT). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. 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
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 | 1003134586 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 9, 2010 |
| Last updated | Oct 10, 2020 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
77 LAFAYETTE PL Greenwich, CT 06830 (203) 863-3700 |
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 | 0 | 0 | 3 | 1 | 3 | 4 | 5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 3 | 8 | 5 | 7 |
Sum = 54 · next multiple of 10 = 60 · 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.