Crystal Sing Schaeffer, LCSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

101385 Issued in NY

Practice address

11 Granite St Apt 2B
Brooklyn, NY 11207-3369

Phone

(917) 924-0118

NPI assigned

Apr 9, 2021

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Other names 1

• Crystal Sing Former name

Medicare fee-for-service enrollment

Enrolled in NY, AZ2 enrollments

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 2

Specialty

Clinical Social Worker

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Integrity Social Work Services LLCGroup PAC ID 4880609528, 74 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/
• FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/

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.

• Integrity Social Work Services LLC

  • Mental Health Counselor
  • Staten Island, NY
  • NPI 1972715456

  Clinical

  Medicare reassignment Care Compare group NPD
• University Settlement Society of New York

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • New York, NY
  • NPI 1346232345
  Medicare reassignment NPD
• Brave Health Medical Group PA

  • Community/Behavioral Health Agency
  • Miami, FL
  • NPI 1225669161

  AZ

  Medicare reassignment NPD
• The New York and Presbyterian Hospital

  • General Acute Care Hospital
  • New York, NY
  • NPI 1194832477
  NPD (past)

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

{
    "created_epoch": "1617926400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778198400000",
    "number": "1801476395",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11 GRANITE ST APT 2B",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112073369",
            "telephone_number": "917-533-2218"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11 GRANITE ST APT 2B",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112073369",
            "telephone_number": "917-924-0118"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SCHAEFFER",
        "first_name": "CRYSTAL",
        "middle_name": "SING",
        "credential": "LCSW",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2021-04-09",
        "last_updated": "2026-05-08",
        "certification_date": "2026-05-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "FL",
            "license": "TPSW6537",
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "NY",
            "license": "101385",
            "primary": true
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "AZ",
            "license": "23390",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "CRYSTAL",
            "last_name": "SING",
            "credential": "LCSW",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Goldie Schaefer
• Isabella Schaefer, AU.D, CCC-A
• Karen Schaefer, MS CCC-SLP
• Lee Schaefer, RN, LCSW
• Andrew Schaeffer
• David Adam Schaeffer, M.D.
• Henry A Schaeffer, M.D.
• Natalie Schaeffer
• Shterna S Schaeffer
• Joan Holland Schaffer, LMSW

• Clinical Social Worker in Brooklyn, NY
• Providers in Brooklyn, NY by specialty
• Clinical Social Worker in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 8, 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.

Verify at the official NPI Registry.