Katherine Whittemore, LCPC-C
Katherine Whittemore, LCPC-C is a Mental Health Counselor in Portland, ME, registered under NPI 1003509456. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Portland, based on OpenStreetMap data collected Oct 2, 2026. Parking is available about 920 ft away at Innovation Hall South: Patient Parking Lot. The nearest transit stop is 0.26 mi away. If you arrive early, there is a coffee shop 0.34 mi away.
Getting here and what is nearby
Restaurant Ginza Town 156 ft ~1 min
1053 Forest Avenue, Portland 04103
Mo-Th 11:00-21:30; Fr,Sa 11:00-22:00; Su 16:00-21:00
Restaurant Falafel Time 156 ft ~1 min
1053 Forest Avenue, Portland 04103
Mo 12:00-20:00; We-Su 12:00-20:00
Coffee Starbucks 270 ft ~2 min
Restaurant Otto Pizza 589 ft ~3 min
Parking 779 ft ~3 min
Transit 859 ft ~4 min
Parking 871 ft ~4 min
Parking Innovation Hall South: Patient Parking Lot 920 ft ~4 min
Transit 985 ft ~4 min
Gas station Cumberland Farms 0.21 mi ~5 min
Convenience Cumberland Farms 0.22 mi ~5 min
1136 Forest Avenue, Portland 04103
Transit 0.26 mi ~6 min
Gas station Sunoco 0.31 mi ~7 min
1185 Forest Avenue, Portland 04103
Coffee Speckled Ax 0.34 mi ~7 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.
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 Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YM0800X
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 | 1003509456 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 31, 2023 |
| Last updated | May 31, 2023 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | LCPC-C |
| Practice address |
1050 FOREST AVE Portland, ME 04103 (207) 242-0443 |
| Mailing address |
86 DAVIS ST South Portland, ME 04106 |
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 | 0 | 9 | 4 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 0 | 9 | 4 | 1 |
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.