Active NPI
Elisha E Christianson, FNP
- Family Nurse Practitioner
- Waterbury, CT
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Nurse Practitioner
- License
- 5899
- Practice address
- 1078 W Main St
Waterbury, CT 06708-2651 - Phone
- (203) 757-1585
- Fax
- (203) 757-0300
- NPI assigned
- Aug 27, 2012
- Last updated
- Feb 9, 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 Nurse Practitioner | 363LF0000X | 5899 | CT | Primary |
Addresses
Primary practice location
1078 W Main St
Waterbury, CT 06708-2651
Mailing address
4700 Exchange CT Ste 110
Boca Raton, FL 33431-4450
Phone (561) 948-0291
Other practice location 1
1343 Boston Post Rd Apt 101
Madison, CT 06443-3481
Phone (860) 669-6156
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CT
- 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
- Nurse Practitioner
- Education
- Other, 2005
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1078 W Main St
Waterbury, CT 06708-2651
Phone (203) 757-1585
1343 Boston Post Rd
Apt 101
Madison, CT 06443-3481
Phone (860) 259-4037
Hospital & facility affiliations
Merit-based Incentive Payment System (MIPS)
- Final score
- 100 of 100
- Quality
- 100
- Improvement activities
- 40
Merit-based Incentive Payment System (MIPS)
- Final score
- 98.94 of 100
- Quality
- 96.67
- Improvement activities
- 40
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Nurse Practitioner
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 5899 | CT | MD | Family Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Integrated Dermatology of Clinton, LLC | Current | Accepting new patients | |
| Integrated Dermatology of Waterbury, LLC | Current | Accepting new patients | |
| On Site Dermatology of Connecticut LLC | Past | Accepting new patients | |
| Southern Connecticut Dermatology, P.C. | Past | Accepting new patients |
Locations
4639 Main St
Bridgeport, CT 06606
Phone (203) 374-5546
8 E Main St
Ste 101
Clinton, CT 06413
Phone (860) 669-6156
2 Pomperaug Office Park
Southbury, CT 06488
Phone (203) 264-1735
493 Heritage Rd
Ste 1C
Southbury, CT 06488
Phone (203) 586-1385
1078 W Main St
Waterbury, CT 06708
Phone (203) 753-8336
4700 Exchange Ct
Ste 110
Boca Raton, FL 33431
Phone (561) 223-8081
902 Clint Moore Rd
Ste 226
Boca Raton, FL 33487
Organizations & group practices 4
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.
-
dba Dermatology of Clinton LLP
- Dermatology Physician
- Madison, CT
- NPI 1457728883
-
- Dermatology Physician
- Waterbury, CT
- NPI 1588136220
-
- Dermatology Physician
- Madison, CT
- NPI 1326473661
-
- Dermatology Physician
- Stamford, CT
- NPI 1992879795
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Waterbury, CT
- NPI 1760426969
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1346025600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1770595200000",
"number": "1609124528",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "4700 EXCHANGE CT STE 110",
"city": "BOCA RATON",
"state": "FL",
"postal_code": "334314450",
"telephone_number": "561-948-0291",
"fax_number": "561-859-0429"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1078 W MAIN ST",
"city": "WATERBURY",
"state": "CT",
"postal_code": "067082651",
"telephone_number": "203-757-1585",
"fax_number": "203-757-0300"
}
],
"practiceLocations": [
{
"address_1": "1343 Boston Post Rd Apt 101",
"address_purpose": "LOCATION",
"city": "Madison",
"state": "CT",
"postal_code": "064433481",
"country_code": "US",
"telephone_number": "860-669-6156",
"fax_number": "860-664-0285",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "CHRISTIANSON",
"first_name": "ELISHA",
"middle_name": "E",
"credential": "FNP",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2012-08-27",
"last_updated": "2026-02-09",
"certification_date": "2026-02-09",
"status": "A"
},
"taxonomies": [
{
"code": "363LF0000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Family",
"state": "CT",
"license": "5899",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Waterbury, CT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 9, 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.