NPIMap

Individual provider Active NPI

Sydney Ostrofsky

  • Physician Assistant
  • New York, NY
National Provider Identifier
1063189439
Registry record updated Jul 26, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
027948 Issued in NY
Practice address
1 Gustave Levy Place
New York, NY 10029
Phone
(212) 241-6500
NPI assigned
Aug 24, 2021
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 26, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X NY
Physician Assistant 363A00000X 027948 NY Primary

Addresses

Primary practice location

1 Gustave Levy Place
New York, NY 10029

Mailing address

1 Gustave Levy Place
New York, NY 10029
Phone (212) 241-6500

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20220712001653 NY Practitioner - Physician Assistant 4688054349 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2022
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Icahn School of Medicine at Mount SinaiGroup PAC ID 6103251491, 50 clinicians

Practice addresses (Care Compare)

234 E 85TH St
New York, NY 10028-3001
Phone (646) 605-5669

5 E 98TH St
New York, NY 10029-6501
Phone (212) 241-9468

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
027948NYMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Icahn School of Medicine at Mount Sinai CurrentSince Jan 1, 2023 Accepting new patients
Fpa Hospital Based CurrentSince Jun 1, 2022 Accepting new patients
Icahn School of Medicine at Mount Sinai CurrentSince Jan 1, 2023 Accepting new patients
Icahn School of Medicine at Mount Sinai Past Accepting new patients

Locations

300 Cadman Plz W
Fl 18
Brooklyn, NY 11201
Phone (929) 210-6000

3201 Kings Hwy
Brooklyn, NY 11234
Phone (718) 252-3000

2510 30th Ave
Long Island City, NY 11102
Phone (718) 267-4245

638 Columbus Ave
New York, NY 10024
Phone (212) 523-8672

234 E 85th St
New York, NY 10028
Phone (212) 241-6585

1468 Madison Ave
#3220
New York, NY 10029

5 E 98th St
New York, NY 10029
Phone (212) 241-3986

1440 Madison Ave
New York, NY 10029
Phone (212) 241-5561

1111 Amsterdam Ave
New York, NY 10025
Phone (212) 523-2309

1000 10th Ave
New York, NY 10019
Phone (212) 523-2369

Networks

  • Healthfirst Medicare Network H9678
  • Healthfirst Medicare Network H3359
  • Healthfirst Medicare Network H5989
  • Healthfirst Medicare Network H1722

Organizations & group practices 8

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.

Hospital & facility affiliations 6

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1629763200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753488000000",
    "number": "1063189439",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 GUSTAVE LEVY PLACE",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "10029",
            "telephone_number": "212-241-6500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 GUSTAVE LEVY PLACE",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "10029",
            "telephone_number": "212-241-6500"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OSTROFSKY",
        "first_name": "SYDNEY",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2021-08-24",
        "last_updated": "2025-07-26",
        "certification_date": "2025-07-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "NY",
            "license": null,
            "primary": false
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "NY",
            "license": "027948",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

Verify at the official NPI Registry.