Active NPI
William Cory Martineau, LCPC
- Mental Health Counselor
- Boise, ID
National Provider Identifier
1245849223
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Mental Health Counselor
- License
- 8331017
- Practice address
- 6428 W Interchange LN
#5
Boise, ID 83709 - Phone
- (208) 398-0009
- NPI assigned
- Jul 27, 2020
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Mental Health Counselor | 101YM0800X | 8331017 | ID | Primary |
Addresses
Primary practice location
6428 W Interchange LN
#5
Boise, ID 83709
Mailing address
6428 W Interchange LN
Boise, ID 83709-1144
Phone (208) 398-0009
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Opted out of Medicare
- Yes, effective Jan 1, 2024 through Jan 1, 2028
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 8331017 | ID | MD | Mental Health Counselor |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1595808000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1773619200000",
"number": "1245849223",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "6428 W INTERCHANGE LN",
"city": "BOISE",
"state": "ID",
"postal_code": "837091144",
"telephone_number": "208-398-0009"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "6428 W INTERCHANGE LN",
"address_2": "#5",
"city": "BOISE",
"state": "ID",
"postal_code": "83709",
"telephone_number": "208-398-0009"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MARTINEAU",
"first_name": "WILLIAM",
"middle_name": "CORY",
"credential": "LCPC",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2020-07-27",
"last_updated": "2026-03-16",
"certification_date": "2026-03-16",
"status": "A"
},
"taxonomies": [
{
"code": "101YM0800X",
"taxonomy_group": "193400000X SINGLE SPECIALTY GROUP",
"desc": "Counselor, Mental Health",
"state": "ID",
"license": "8331017",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Boise, ID
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 16, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Opt Out Affidavits.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.