Active NPI
Mark Sandberg
- Clinical Neuropsychologist
- Port Jefferson, NY
National Provider Identifier
1831191709
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Neuropsychologist
- License
- 010083
- Practice address
- 200 Belle Terre Rd
Port Jefferson, NY 11777-1928 - Phone
- (631) 474-6000
- NPI assigned
- Aug 11, 2005
- Last updated
- Jul 13, 2026
- 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 |
|---|---|---|---|---|
| Clinical Neuropsychologist | 103G00000X | 010083 | NY | Primary |
Addresses
Primary practice location
200 Belle Terre Rd
Port Jefferson, NY 11777-1928
Mailing address
200 Belle Terre Rd
Port Jefferson, NY 11777-1928
Phone (631) 474-6000
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: No
- Power mobility devices: No
- Hospice: No
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20050926001217 | NY | Practitioner - Clinical Psychologist | 8022042233 | Practice locations: Smithtown, NY |
Care Compare profile
Medicare Care Compare- Specialty
- Clinical Psychologist
- Education
- Other, 1988
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
Practice addresses (Care Compare)
50 Karl Ave
Suite 104
Smithtown, NY 11787-2744
Phone (631) 724-5925
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Philosophy
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Advanced Psychological Assessment, P.C. | Clinical Neuropsychologist | Past | Accepting new patients |
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.
-
- Clinical Neuropsychologist
- Smithtown, NY
- NPI 1750417408
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1123718400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1831191709",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "200 BELLE TERRE RD",
"city": "PORT JEFFERSON",
"state": "NY",
"postal_code": "117771928",
"telephone_number": "631-474-6000"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "200 BELLE TERRE RD",
"city": "PORT JEFFERSON",
"state": "NY",
"postal_code": "117771928",
"telephone_number": "631-474-6000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "SANDBERG",
"first_name": "MARK",
"name_prefix": "Dr.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-08-11",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "103G00000X",
"taxonomy_group": "",
"desc": "Clinical Neuropsychologist",
"state": "NY",
"license": "010083",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Port Jefferson, 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.
- 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.