Active NPI
Olimpia Welsh
- Family Medicine Physician
- Williamstown, NJ
National Provider Identifier
1790618908
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Medicine Physician
- License
- 26NJ15586700
- Practice address
- 339 Marissa CT
Williamstown, NJ 08094-3644 - Phone
- (609) 805-7557
- NPI assigned
- Jun 5, 2026
- Last updated
- Jun 5, 2026
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | 26NJ15586700 | NJ | Primary |
Addresses
Primary practice location
339 Marissa CT
Williamstown, NJ 08094-3644
Mailing address
339 Marissa CT
Williamstown, NJ 08094-3644
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Care Compare profile
Medicare Care Compare- Specialty
- Nurse Practitioner
- Education
- Other, 2025
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
2001 College Dr
Suite 11
Clementon, NJ 08021-5617
Phone (856) 566-3333
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 26NJ15586700 | NJ | MD | Family Medicine Physician |
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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1780617600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1780617600000",
"number": "1790618908",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "339 MARISSA CT",
"city": "WILLIAMSTOWN",
"state": "NJ",
"postal_code": "080943644"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "339 MARISSA CT",
"city": "WILLIAMSTOWN",
"state": "NJ",
"postal_code": "080943644",
"telephone_number": "609-805-7557"
}
],
"practiceLocations": [],
"basic": {
"last_name": "WELSH",
"first_name": "OLIMPIA",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-06-05",
"last_updated": "2026-06-05",
"certification_date": "2026-06-05",
"status": "A"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "NJ",
"license": "26NJ15586700",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Williamstown, NJ
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 5, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.