Active NPI
James William Cassillo, DC
- Chiropractor
- Massapequa, NY
National Provider Identifier
1871592295
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Chiropractor
- License
- X004518
- Practice address
- 5798 Merrick Rd
Massapequa, NY 11758-6223 - Phone
- (516) 795-6666
- Fax
- (516) 795-6834
- NPI assigned
- Jul 18, 2005
- Reactivated
- Mar 24, 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 |
|---|---|---|---|---|
| Chiropractor | 111N00000X | X004518 | NY | Primary |
Addresses
Primary practice location
5798 Merrick Rd
Massapequa, NY 11758-6223
Mailing address
5798 Merrick Rd
Massapequa, NY 11758-6223
Phone (516) 795-6666
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
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 004518 | NY | MD | Mental Health Counselor |
| X004518 | NY | MD | Chiropractor |
| 4518 | NY | MD | Acupuncturist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1121644800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1871592295",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "5798 MERRICK RD",
"city": "MASSAPEQUA",
"state": "NY",
"postal_code": "117586223",
"telephone_number": "516-795-6666",
"fax_number": "516-795-6834"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "5798 MERRICK RD",
"city": "MASSAPEQUA",
"state": "NY",
"postal_code": "117586223",
"telephone_number": "516-795-6666",
"fax_number": "516-795-6834"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CASSILLO",
"first_name": "JAMES",
"middle_name": "WILLIAM",
"credential": "DC",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-07-18",
"last_updated": "2026-07-13",
"deactivation_date": "2006-03-20",
"reactivation_date": "2006-03-24",
"status": "A"
},
"taxonomies": [
{
"code": "111N00000X",
"taxonomy_group": "",
"desc": "Chiropractor",
"state": "NY",
"license": "X004518",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Massapequa, NY
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.