Active NPI
Jamie M Leff, MSRD
- Registered Dietitian
- Newbury Park, CA
National Provider Identifier
1013195585
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Registered Dietitian
- License
- 927733
- Practice address
- 5185 Via Jacinto
Newbury Park, CA 91320-6892 - Phone
- (818) 207-5803
- NPI assigned
- Feb 6, 2008
- Sex
- Female
- 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 |
|---|---|---|---|---|
| Registered Dietitian | 133V00000X | 927733 | CA | Primary |
Addresses
Primary practice location
5185 Via Jacinto
Newbury Park, CA 91320-6892
Mailing address
5185 Via Jacinto
Newbury Park, CA 91320-6892
Phone (818) 207-5803
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
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 927733 | CA | MD | Registered Dietitian |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Marjorie Nolan Cohn LLC | Dietitian, Registered | Past | Accepting new patients |
| Fay Nutrition | Dietitian, Registered | Past | Accepting new patients |
| Jamie Leff Ms Rd | Dietitian, Registered | Past | Accepting new patients |
| Nourish, Inc. | Dietitian, Registered | Past | Accepting new patients |
Networks
- TX HMO D-SNP
- TX HMO
Organizations & group practices 4
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": "1202256000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1013195585",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "5185 VIA JACINTO",
"city": "NEWBURY PARK",
"state": "CA",
"postal_code": "913206892",
"telephone_number": "818-207-5803"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "5185 VIA JACINTO",
"city": "NEWBURY PARK",
"state": "CA",
"postal_code": "913206892",
"telephone_number": "818-207-5803"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LEFF",
"first_name": "JAMIE",
"middle_name": "M",
"credential": "MSRD",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2008-02-06",
"last_updated": "2025-09-11",
"certification_date": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "133V00000X",
"taxonomy_group": "",
"desc": "Dietitian, Registered",
"state": "CA",
"license": "927733",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Newbury Park, 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.