Aleksandr Grzhibek, MD

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

331103 Issued in NY

Practice address

577 Prospect Ave Apt 1B
Brooklyn, NY 11215-6074

Phone

(718) 369-0318

NPI assigned

Apr 23, 2021

Last updated

Aug 11, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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.

Specialty

NephrologyAlso: Internal Medicine

Education

Other, 2017

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Kidney Care of Brooklyn and Queens, PLLC

  • Nephrology Physician
  • Brooklyn, NY
  • NPI 1588002315
  NPD (past)

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

{
    "created_epoch": "1619136000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786406400000",
    "number": "1932781572",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "577 PROSPECT AVE APT 1B",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112156074",
            "telephone_number": "718-369-0318"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "577 PROSPECT AVE APT 1B",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112156074",
            "telephone_number": "718-369-0318"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRZHIBEK",
        "first_name": "ALEKSANDR",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-23",
        "last_updated": "2026-08-11",
        "certification_date": "2026-08-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "NY",
            "license": "331103",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Gennadiy Grutman, M.D.
• Valentine Grutman, OT
• Lauretta Grzegorczyk, M.D.
• Jennifer Zofia Grzesik, DPM
• Marina Grzeskowiak, P.A.
• GS Pharmacy LLC
• Gsny Home Care Services, Inc.
• GSP Medical, PC
• GSV Pharmacy Inc (lane drugs)
• Gtwy Inc. (Gateway Car & Limo Service)

• Nephrology Physician in Brooklyn, NY
• Providers in Brooklyn, NY by specialty
• Nephrology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 11, 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.