Active NPI
Jonathan A Leff, M.D.
- Research Study Specialist
- Menlo Park, CA
National Provider Identifier
1538407721
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Research Study Specialist
- License
- G86872
- Practice address
- 178 Seminary Dr
Menlo Park, CA 94025-3569 - Phone
- (650) 521-0353
- NPI assigned
- Jan 22, 2013
- 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 |
|---|---|---|---|---|
| Research Study Specialist | 1744R1102X | G86872 | CA | Primary |
Addresses
Primary practice location
178 Seminary Dr
Menlo Park, CA 94025-3569
Mailing address
178 Seminary Dr
Menlo Park, CA 94025-3569
Phone (650) 521-0353
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
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| G86872 | CA | MD | Research Study Specialist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1358812800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1358812800000",
"number": "1538407721",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "178 SEMINARY DR",
"city": "MENLO PARK",
"state": "CA",
"postal_code": "940253569",
"telephone_number": "650-521-0353"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "178 SEMINARY DR",
"city": "MENLO PARK",
"state": "CA",
"postal_code": "940253569",
"telephone_number": "650-521-0353"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LEFF",
"first_name": "JONATHAN",
"middle_name": "A",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2013-01-22",
"last_updated": "2013-01-22",
"status": "A"
},
"taxonomies": [
{
"code": "1744R1102X",
"taxonomy_group": "",
"desc": "Specialist, Research Study",
"state": "CA",
"license": "G86872",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Menlo Park, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 22, 2013; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.