Individual provider Active NPI

Lydia Marie Sander, LMSW

  • Social Worker
  • Rockville, MD
National Provider Identifier
1124959796
Registry record updated May 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Social WorkerTaxonomy code 104100000X
License
34753 Issued in MD
Practice address
1395 Piccard Dr Ste 110
Rockville, MD 20850-4364
Phone
(301) 769-5878
NPI assigned
May 25, 2026
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 25, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Social Worker 104100000X 34753 MD Primary

Addresses

Primary practice location

1395 Piccard Dr Ste 110
Rockville, MD 20850-4364

Mailing address

212 W Montgomery Ave
Rockville, MD 20850-2858

Other practice location 1

845 Quince Orchard Blvd Ste F
Gaithersburg, MD 20878-1676
Phone (301) 417-5283

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

State licenses

LicenseStateTypeSpecialty
34753MDMDSocial Worker

Practice roles

OrganizationSpecialtyStatusNew patients
Washington Psychological Wellness LLC PastSince Aug 30, 2020 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": "1779667200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779667200000",
    "number": "1124959796",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "212 W MONTGOMERY AVE",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208502858"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1395 PICCARD DR STE 110",
            "city": "ROCKVILLE",
            "state": "MD",
            "postal_code": "208504364",
            "telephone_number": "301-769-5878"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "845 Quince Orchard Blvd Ste F",
            "address_purpose": "LOCATION",
            "city": "Gaithersburg",
            "state": "MD",
            "postal_code": "208781676",
            "country_code": "US",
            "telephone_number": "301-417-5283",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SANDER",
        "first_name": "LYDIA",
        "middle_name": "MARIE",
        "credential": "LMSW",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-05-25",
        "last_updated": "2026-05-25",
        "certification_date": "2026-05-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "MD",
            "license": "34753",
            "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 May 25, 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.