Active NPI
William Harold Percy, PHD, LP, LMFT
- Marriage & Family Therapist
- Minneapolis, MN
National Provider Identifier
1881643518
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Marriage & Family Therapist
- License
- 78
- Practice address
- 1409 Willow St
Suite 220
Minneapolis, MN 55403-2269 - Phone
- (612) 819-2311
- Fax
- (612) 870-4542
- NPI assigned
- May 9, 2006
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Psychologist | 103T00000X | LP184 | MN | |
| Marriage & Family Therapist | 106H00000X | 78 | MN | Primary |
Addresses
Primary practice location
1409 Willow St
Suite 220
Minneapolis, MN 55403-2269
Mailing address
111 E Franklin Ave
#319
Minneapolis, MN 55404-2541
Phone (612) 819-2311
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| LP184 | MN | MD | Psychologist |
| 78 | MN | MD | Marriage & Family Therapist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| William H Percy LLC | Psychologist | Past | Accepting new patients |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1147132800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1881643518",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "111 E FRANKLIN AVE",
"address_2": "#319",
"city": "MINNEAPOLIS",
"state": "MN",
"postal_code": "554042541",
"telephone_number": "612-819-2311",
"fax_number": "612-870-4542"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1409 WILLOW ST",
"address_2": "SUITE 220",
"city": "MINNEAPOLIS",
"state": "MN",
"postal_code": "554032269",
"telephone_number": "612-819-2311",
"fax_number": "612-870-4542"
}
],
"practiceLocations": [],
"basic": {
"last_name": "PERCY",
"first_name": "WILLIAM",
"middle_name": "HAROLD",
"name_prefix": "Dr.",
"credential": "PHD, LP, LMFT",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2006-05-09",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "103T00000X",
"taxonomy_group": "",
"desc": "Psychologist",
"state": "MN",
"license": "LP184",
"primary": false
},
{
"code": "106H00000X",
"taxonomy_group": "",
"desc": "Marriage & Family Therapist",
"state": "MN",
"license": "78",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Minneapolis, MN
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.