Active NPI
Loren Leidheiser, D.O.
- Emergency Medicine Physician
- Westerville, OH
National Provider Identifier
1336189596
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Emergency Medicine Physician
- License
- 34005340-L
- Practice address
- 500 S Cleveland Ave
Westerville, OH 43081-8971 - Phone
- (614) 794-0481
- Fax
- (614) 794-3711
- NPI assigned
- Jun 7, 2006
- Sex
- Male
- Sole proprietor
- No
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 |
|---|---|---|---|---|
| Emergency Medicine Physician | 207P00000X | 34005340-L | OH | Primary |
Addresses
Primary practice location
500 S Cleveland Ave
Westerville, OH 43081-8971
Mailing address
575 Copeland Mill Rd
Suite #1D
Westerville, OH 43081-8977
Phone (614) 794-0481
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 Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 34005340-L | OH | MD | Emergency Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Immediate Health Associates | Emergency Medicine | 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.
-
- Emergency Medicine Physician
- Westerville, OH
- NPI 1639123193
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1149638400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1336189596",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "575 COPELAND MILL RD",
"address_2": "SUITE #1D",
"city": "WESTERVILLE",
"state": "OH",
"postal_code": "430818977",
"telephone_number": "614-794-0481",
"fax_number": "614-794-3711"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "500 S CLEVELAND AVE",
"city": "WESTERVILLE",
"state": "OH",
"postal_code": "430818971",
"telephone_number": "614-794-0481",
"fax_number": "614-794-3711"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LEIDHEISER",
"first_name": "LOREN",
"name_prefix": "Dr.",
"credential": "D.O.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-06-07",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207P00000X",
"taxonomy_group": "",
"desc": "Emergency Medicine",
"state": "OH",
"license": "34005340-L",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Westerville, OH
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.