John Sibilia
John Sibilia is a Critical Care Medicine Nurse Practitioner in Portland, ME, registered under NPI 1003605866. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Portland, based on OpenStreetMap data collected Sep 1, 2026. Parking is available about 610 ft away. The nearest transit stop is 638 ft away, served by Congress St + Valley St. A pharmacy sits 0.36 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.34 mi away.
Getting here and what is nearby
Parking 271 ft ~2 min
Parking 378 ft ~2 min
Transit Congress St + Valley St 546 ft ~3 min
Transit 598 ft ~3 min
Restaurant Salvage BBQ 578 ft ~3 min
Restaurant Saeng Thai House 602 ft ~3 min
921 Congress Street, Portland 04102
Mo, We-Su 11:00-21:30
Transit Congress St + Valley St 638 ft ~3 min
Parking 610 ft ~3 min
15 Forest Street, Portland 04102
Convenience La Bodega Latina 695 ft ~3 min
Hotel Chadwick Bed & Breakfast 666 ft ~3 min
Restaurant Pizza Villa 699 ft ~3 min
Hotel The Inn at Saint John 776 ft ~3 min
Grocery Hong Kong Market 814 ft ~4 min
Hotel Morrill Mansion Bed and Breakfast 883 ft ~4 min
Grocery Save-A-Lot 0.21 mi ~5 min
Coffee Tandem Bakery 0.28 mi ~6 min
742 Congress Street, Portland 04102
Mo-Fr 07:00-18:00; Sa,Su 08:00-18:00
Coffee Yordprom 0.34 mi ~7 min
Convenience Mellen Street Market 0.35 mi ~7 min
Pharmacy Walgreens 0.36 mi ~8 min
Convenience 7-Eleven 0.40 mi ~8 min
Gas station 7-Eleven 0.40 mi ~8 min
Congress Street, Portland 04102
Gas station Cumberland Farms 0.41 mi ~9 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 |
|---|---|---|
| CNP251254 | ME | Critical Care Medicine Nurse Practitioner primary |
| RN2354100 | MA | Nurse Practitioner |
Licences are recorded in 2 states: ME, MA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
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.
Licensed in 2 states
This provider holds licences in 2 states: Massachusetts and Maine. The practice address on file is in Portland, ME, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- CNP251254
- Specialty
- Critical Care Medicine Nurse…
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Critical Care Medicine covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LC0200X
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 | |
|---|---|---|---|---|
| 363LC0200X | Critical Care Medicine Nurse Practitioner Critical Care Medicine | CNP251254 | ME | primary |
| 363L00000X | Nurse Practitioner | RN2354100 | 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 | 1003605866 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 6, 2025 |
| Last updated | Aug 7, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
22 BRAMHALL ST Portland, ME 04102 (207) 662-0111 |
| Mailing address |
55 FRUIT ST Boston, MA 02114 |
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 | 6 | 0 | 5 | 8 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 0 | 1 | 8 | 3 |
Sum = 44 · next multiple of 10 = 50 · 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.