Active NPI
William Jefferson, M.A.
- Marriage & Family Therapist
- Gilbert, AZ
National Provider Identifier
1659419455
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Marriage & Family Therapist
- License
- LMFT 0065
- Practice address
- 1150 N Sailors Way
Gilbert, AZ 85234-3612 - Phone
- (480) 632-0276
- NPI assigned
- Feb 2, 2007
- 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 |
|---|---|---|---|---|
| Professional Counselor | 101YP2500X | LPC 0229 | AZ | |
| Marriage & Family Therapist | 106H00000X | LMFT 0065 | AZ | Primary |
Addresses
Primary practice location
1150 N Sailors Way
Gilbert, AZ 85234-3612
Mailing address
1150 N Sailors Way
Gilbert, AZ 85234-3612
Phone (480) 632-0276
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)
- Not enrolled
- Credentials
- Master of Arts
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| LPC 0229 | AZ | MD | Professional Counselor |
| LMFT 0065 | AZ | MD | Marriage & Family Therapist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1170374400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1659419455",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1150 N SAILORS WAY",
"city": "GILBERT",
"state": "AZ",
"postal_code": "852343612",
"telephone_number": "480-632-0276"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1150 N SAILORS WAY",
"city": "GILBERT",
"state": "AZ",
"postal_code": "852343612",
"telephone_number": "480-632-0276"
}
],
"practiceLocations": [],
"basic": {
"last_name": "JEFFERSON",
"first_name": "WILLIAM",
"name_prefix": "Mr.",
"credential": "M.A.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2007-02-02",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "101YP2500X",
"taxonomy_group": "",
"desc": "Counselor, Professional",
"state": "AZ",
"license": "LPC 0229",
"primary": false
},
{
"code": "106H00000X",
"taxonomy_group": "",
"desc": "Marriage & Family Therapist",
"state": "AZ",
"license": "LMFT 0065",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Gilbert, AZ
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.