Active NPI
Olivia Demmers
- Social Worker
- Philadelphia, PA
National Provider Identifier
1346933009
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Social Worker
- Practice address
- 230 S Broad St Ste 2050
Philadelphia, PA 19102-4121 - Phone
- (248) 875-3881
- NPI assigned
- May 30, 2023
- 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 |
|---|---|---|---|---|
| Social Worker | 104100000X | Primary |
Addresses
Primary practice location
230 S Broad St Ste 2050
Philadelphia, PA 19102-4121
Mailing address
4817 Baltimore Ave
Philadelphia, PA 19143-3560
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
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Walnut Psychotherapy Center | Social Worker | 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.
-
- Clinical Social Worker
- Philadelphia, PA
- NPI 1659749497
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1685404800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1770854400000",
"number": "1346933009",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "4817 BALTIMORE AVE",
"city": "PHILADELPHIA",
"state": "PA",
"postal_code": "191433560"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "230 S BROAD ST STE 2050",
"city": "PHILADELPHIA",
"state": "PA",
"postal_code": "191024121",
"telephone_number": "248-875-3881"
}
],
"practiceLocations": [],
"basic": {
"last_name": "DEMMERS",
"first_name": "OLIVIA",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2023-05-30",
"last_updated": "2026-02-12",
"certification_date": "2026-02-12",
"status": "A"
},
"taxonomies": [
{
"code": "104100000X",
"taxonomy_group": "",
"desc": "Social Worker",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Philadelphia, PA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 12, 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.