Active NPI
Amy Patricia Duffner, PT
- Pediatric Physical Therapist
- Carlsbad, CA
National Provider Identifier
1164522322
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatric Physical Therapist
- License
- PT21696
- Practice address
- 2333 State Street
Suite 201
Carlsbad, CA 92008-1691 - Phone
- (760) 434-3912
- Fax
- (760) 434-3871
- NPI assigned
- Sep 25, 2006
- Sex
- Female
- Sole proprietor
- No
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 |
|---|---|---|---|---|
| Physical Therapist | 225100000X | PT21696 | CA | |
| Pediatric Physical Therapist | 2251P0200X | PT21696 | CA | Primary |
Addresses
Primary practice location
2333 State Street
Suite 201
Carlsbad, CA 92008-1691
Mailing address
750 Buena Creek Road
San Marcos, CA 92069-9672
Phone (760) 471-2116
Other names 1
- Mrs. Amy Patricia Duffner-Johnson
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
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| PT21696 | CA | MD | Physical Therapist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Innovative Therapy 4 Kids Inc | Pediatrics | 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": "1159142400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1164522322",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "750 BUENA CREEK ROAD",
"city": "SAN MARCOS",
"state": "CA",
"postal_code": "920699672",
"telephone_number": "760-471-2116",
"fax_number": "760-471-2116"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2333 STATE STREET",
"address_2": "SUITE 201",
"city": "CARLSBAD",
"state": "CA",
"postal_code": "920081691",
"telephone_number": "760-434-3912",
"fax_number": "760-434-3871"
}
],
"practiceLocations": [],
"basic": {
"last_name": "DUFFNER",
"first_name": "AMY",
"middle_name": "PATRICIA",
"name_prefix": "Ms.",
"credential": "PT",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-09-25",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "225100000X",
"taxonomy_group": "",
"desc": "Physical Therapist",
"state": "CA",
"license": "PT21696",
"primary": false
},
{
"code": "2251P0200X",
"taxonomy_group": "",
"desc": "Physical Therapist, Pediatrics",
"state": "CA",
"license": "PT21696",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "AMY",
"last_name": "DUFFNER-JOHNSON",
"middle_name": "PATRICIA",
"prefix": "MRS.",
"credential": "PT",
"code": "5",
"type": "Other Name"
}
]
}Other providers in Carlsbad, CA
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.