Active NPI
Terence James Omalley, MD
- Anesthesiology Physician
- West Islip, NY
National Provider Identifier
1003890013
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Anesthesiology Physician
- License
- 1604611
- Practice address
- 1000 Montauk Hwy
Good Samaritan Hospital Medical Center
West Islip, NY 11795 - Phone
- (631) 376-4088
- Fax
- (631) 376-3289
- NPI assigned
- Dec 2, 2005
- 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 |
|---|---|---|---|---|
| Anesthesiology Physician | 207L00000X | 1604611 | NY | Primary |
Addresses
Primary practice location
1000 Montauk Hwy
Good Samaritan Hospital Medical Center
West Islip, NY 11795
Mailing address
3 Boyle Road
Selden, NY 11784
Phone (631) 736-4064
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 01105504 | Medicaid | NY |
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: No
- Medical equipment: Yes
- Home health: No
- Power mobility devices: Yes
- Hospice: No
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 1604611 | NY | MD | Anesthesiology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1133481600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1003890013",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "3 BOYLE ROAD",
"city": "SELDEN",
"state": "NY",
"postal_code": "11784",
"telephone_number": "631-736-4064",
"fax_number": "631-736-1332"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1000 MONTAUK HWY",
"address_2": "GOOD SAMARITAN HOSPITAL MEDICAL CENTER",
"city": "WEST ISLIP",
"state": "NY",
"postal_code": "11795",
"telephone_number": "631-376-4088",
"fax_number": "631-376-3289"
}
],
"practiceLocations": [],
"basic": {
"last_name": "OMALLEY",
"first_name": "TERENCE",
"middle_name": "JAMES",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-12-02",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207L00000X",
"taxonomy_group": "",
"desc": "Anesthesiology",
"state": "NY",
"license": "1604611",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "01105504",
"state": "NY"
}
],
"endpoints": [],
"other_names": []
}Other providers in West Islip, 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.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.