Active NPI
Kristen Grandmaison, P.A.
- Physician Assistant
- Somerset, NJ
National Provider Identifier
1891199022
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physician Assistant
- License
- 25MP00348000
- Practice address
- 1543 NJ-27
Suite 21
Somerset, NJ 08873 - Phone
- (732) 873-6863
- NPI assigned
- Oct 17, 2014
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Physician Assistant | 363A00000X | 006229 | NY | |
| Physician Assistant | 363A00000X | 25MP00348000 | NJ | Primary |
Addresses
Primary practice location
1543 NJ-27
Suite 21
Somerset, NJ 08873
Mailing address
1543 NJ-27
Suite 21
Somerset, NJ 08873
Phone (732) 873-6863
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NJ
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Physician Assistant
- Education
- Other, 1996
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1543 Route 27
Suite 21
Somerset, NJ 08873-4015
Phone (732) 873-6863
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Physician Assistant
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 006229 | NY | MD | Physician Assistant |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| ENT and Allergy Associates LLP | Current | Accepting new patients |
Locations
1543 State Route 27
Ste 21
Somerset, NJ 08873
Phone (732) 873-6863
1211 Hamburg Tpke
Ste 205
Wayne, NJ 07470
Phone (973) 633-0808
Interoperability endpoints
- https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
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.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1413504000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1766966400000",
"number": "1891199022",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1543 NJ-27",
"address_2": "SUITE 21",
"city": "SOMERSET",
"state": "NJ",
"postal_code": "08873",
"telephone_number": "732-873-6863"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1543 NJ-27",
"address_2": "SUITE 21",
"city": "SOMERSET",
"state": "NJ",
"postal_code": "08873",
"telephone_number": "732-873-6863"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GRANDMAISON",
"first_name": "KRISTEN",
"name_prefix": "Mrs.",
"credential": "P.A.",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2014-10-17",
"last_updated": "2025-12-29",
"certification_date": "2025-12-29",
"status": "A"
},
"taxonomies": [
{
"code": "363A00000X",
"taxonomy_group": "",
"desc": "Physician Assistant",
"state": "NY",
"license": "006229",
"primary": false
},
{
"code": "363A00000X",
"taxonomy_group": "",
"desc": "Physician Assistant",
"state": "NJ",
"license": "25MP00348000",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Somerset, NJ
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 29, 2025; 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.