Luke Keffer, MD, MBA
Luke Keffer, MD, MBA is a provider specialising in Student in an Organized Health Care Education/Training Program in Portland, ME, registered under NPI 1003518424.
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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Order And Referring Only - Vascular Surgery
- PAC ID
- 0143689000
- Enrollment ID
- I20230710003633
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Vascular Surgery. 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 Student in an Organized Health Care Education/Training Program covers
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care. NUCC Health Care Provider Taxonomy, code 390200000X
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 | 1003518424 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 20, 2023 |
| Last updated | Mar 20, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD, MBA |
| Practice address |
22 BRAMHALL ST Portland, ME 04102 (207) 662-0111 |
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 | 5 | 1 | 8 | 4 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 1 | 7 | 4 | 4 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.