Individual provider Active NPI

Mark Sandberg

  • Clinical Neuropsychologist
  • Port Jefferson, NY
National Provider Identifier
1831191709
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical NeuropsychologistTaxonomy code 103G00000X
License
010083 Issued in NY
Practice address
200 Belle Terre Rd
Port Jefferson, NY 11777-1928
Phone
(631) 474-6000
NPI assigned
Aug 11, 2005
Last updated
Jul 13, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
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
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
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

OrganizationSpecialtyStatusNew patients
Advanced Psychological Assessment, P.C. Clinical Neuropsychologist PastSince Jan 17, 2007 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.

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

Verify at the official NPI Registry.