Individual provider Active NPI

Katya Ostrow, M.D.

  • Obstetrics & Gynecology Physician
  • New York, NY
National Provider Identifier
1871943977
Registry record updated Oct 2, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
License
304668 Issued in NY
Practice address
215 E 95TH St FRNT 1
New York, NY 10128-4077
Phone
(212) 996-8000
Fax
(212) 423-3904
NPI assigned
Jun 20, 2016
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 2, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X 304668 NY Primary

Addresses

Primary practice location

215 E 95TH St FRNT 1
New York, NY 10128-4077

Mailing address

55 Water St FL 2
New York, NY 10041-0010
Phone (646) 680-2888

Other practice location 1

21 E 22nd St Frnt 1
New York, NY 10010-5332
Phone (212) 460-7800

Other practice location 2

215 W 125th St Fl 2
New York, NY 10027-4426
Phone (212) 491-2400

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: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20210526000263 NY Practitioner - Obstetrics/Gynecology 3971842535 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Other, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Advantagecare Physicians PCGroup PAC ID 2365735008, 307 clinicians

Practice addresses (Care Compare)

21 E 22ND St
New York, NY 10010-5332
Phone (212) 460-7800

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
304668NYMDLicensed Practical Nurse

Practice roles

OrganizationSpecialtyStatusNew patients
Advantagecare Physicians PC CurrentSince Sep 11, 2023 Accepting new patients
Rosh Maternal Fetal Medicine PLLC Obstetrics & Gynecology CurrentSince Feb 23, 2021 Accepting new patients
Advantagecare Physicians PC CurrentSince Sep 11, 2023 Accepting new patients

Locations

233 Nostrand Ave
Brooklyn, NY 11205
Phone (646) 680-1595

21 E 22nd St
New York, NY 10010
Phone (212) 460-7800

21 E 22nd St
Frnt 1
New York, NY 10010
Phone (212) 460-7800

215 W 125th St
Fl 2
New York, NY 10027
Phone (212) 491-2400

215 E 95th St
Frnt 1
New York, NY 10128
Phone (212) 996-8000

903 Lexington Ave
Frnt 1A
New York, NY 10065

55 Water St
Fl 2
New York, NY 10041

215 W 125th St
New York, NY 10027
Phone (212) 491-2400

110 E 40th St
New York, NY 10016
Phone (212) 434-4050

213 Madison Ave
Ste 1A
New York, NY 10016

215 E 95th St
New York, NY 10128
Phone (212) 423-3111

Networks

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

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/21664/brand/1/csg/1/fhir/r4
  • Direct secure messaging: kostrow67350@northwell.direct-ci.com
  • FHIR API: https://epwebapps.acpny.com/FHIRproxy/ACPNY/api/FHIR/R4
  • Direct secure messaging: kostrow370431@nyumc.direct-ci.com
  • Direct secure messaging: kostrow51619@direct.acpny.com

Organizations & group practices 3

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 1

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": "1466380800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759363200000",
    "number": "1871943977",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "55 WATER ST FL 2",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100410010",
            "telephone_number": "646-680-2888",
            "fax_number": "516-542-5556"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "215 E 95TH ST FRNT 1",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "101284077",
            "telephone_number": "212-996-8000",
            "fax_number": "212-423-3904"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "21 E 22nd St Frnt 1",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100105332",
            "country_code": "US",
            "telephone_number": "212-460-7800",
            "fax_number": "212-460-7877",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "215 W 125th St Fl 2",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100274426",
            "country_code": "US",
            "telephone_number": "212-491-2400",
            "fax_number": "212-491-2401",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OSTROW",
        "first_name": "KATYA",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2016-06-20",
        "last_updated": "2025-10-02",
        "certification_date": "2025-10-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "NY",
            "license": "304668",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

Verify at the official NPI Registry.