Brock Tostenson, MD
Brock Tostenson, MD is a Family Medicine Physician in Lewiston, ME, registered under NPI 1003297565.
Getting there
Here is what surrounds this office in Lewiston, based on OpenStreetMap data collected Sep 17, 2026. Parking is available about 0.49 mi away at Lincoln Street Parking Garage. The nearest transit stop is 0.48 mi away, served by Hampton Inn. If you arrive early, there is a coffee shop 0.46 mi away.
Getting here and what is nearby
Transit CMMC 807 ft ~4 min
Gas station 7-Eleven 883 ft ~4 min
Convenience 7-Eleven 955 ft ~4 min
Gas station Citgo 936 ft ~4 min
Coffee She Doesn't Like Guthries 0.26 mi ~6 min
Convenience Corner View Variety 0.28 mi ~6 min
Transit Oak Street Station 0.29 mi ~6 min
Restaurant Dunkin' 0.29 mi ~6 min
Parking Oak Street Parking Garage 0.32 mi ~7 min
1 Oak Street, Lewiston 04240
Restaurant Mother India 0.40 mi ~8 min
Restaurant El Pocho's Mexican Grill 0.40 mi ~9 min
97 Lisbon St
Coffee The Ronj 0.46 mi ~10 min
32 Frye Street, Lewiston 04240
Convenience Circle K 0.47 mi ~10 min
Transit Hampton Inn 0.48 mi ~10 min
Gas station Irving 0.48 mi ~10 min
Hotel Hilton Garden Inn Auburn Riverwatch 0.49 mi ~10 min
Parking 0.49 mi ~10 min
62 Canal Street, Lewiston 04240
Parking Lincoln Street Parking Garage 0.49 mi ~10 min
16 Lincoln Street, Lewiston 04240
Hotel Hampton 0.50 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 |
|---|---|---|
| EC151079 | ME | Family Medicine Physician primary |
This provider holds licence EC151079 issued in ME. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
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.
What Family Medicine covers
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity. NUCC Health Care Provider Taxonomy, code 207Q00000X
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 | 1003297565 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 10, 2015 |
| Last updated | Jun 10, 2015 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD |
| Practice address |
76 HIGH ST Lewiston, ME 04240 (207) 795-2800 |
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 | 2 | 9 | 7 | 5 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 9 | 5 | 5 | 3 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.