Individual provider Active NPI

Brian Darnell Biekman, PHD

  • Clinical Neuropsychologist
  • Rockville, MD
National Provider Identifier
1841126570
Registry record updated Jun 22, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical NeuropsychologistTaxonomy code 103G00000X
License
07446 Issued in MD
Practice address
15245 Shady Grove Rd Ste 350
Rockville, MD 20850-6237
Phone
(301) 765-5430
NPI assigned
Jun 22, 2026
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 22, 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 07446 MD Primary

Addresses

Primary practice location

15245 Shady Grove Rd Ste 350
Rockville, MD 20850-6237

Mailing address

15245 Shady Grove Rd Ste 350
Rockville, MD 20850-6237

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)
Not enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Children's Hospital 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 and National Provider Directory roles.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1782086400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782086400000",
    "number": "1841126570",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15245 SHADY GROVE RD STE 350",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208506237"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15245 SHADY GROVE RD STE 350",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208506237",
            "telephone_number": "301-765-5430"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BIEKMAN",
        "first_name": "BRIAN",
        "middle_name": "DARNELL",
        "name_prefix": "Dr.",
        "credential": "PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-06-22",
        "last_updated": "2026-06-22",
        "certification_date": "2026-06-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103G00000X",
            "taxonomy_group": "",
            "desc": "Clinical Neuropsychologist",
            "state": "MD",
            "license": "07446",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Rockville, MD

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 22, 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.

Verify at the official NPI Registry.