Okwudili Nnaji, M D

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

273307 Issued in NY

Practice address

450 Clarkson Ave
Brooklyn, NY 11203-2012

Phone

(718) 270-2848

NPI assigned

Jan 21, 2009

Last updated

Jun 10, 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

Other identifiers 2

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

Specialty

Nephrology

Education

Other, 1992

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

University Physicians of Brooklyn, Inc.Group PAC ID 0749192284, 174 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Suny Parkside Dialysis Center Dialysis facility, Brooklyn, NY, CCN 333544
• Suny/Downstate University Hospital of Brooklyn Hospital, Brooklyn, NY, CCN 330350

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

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

Interoperability endpoints

• Direct secure messaging: okwudilinnaji@sunydmc.allscriptsdirect.net
• Direct secure messaging: onnaji1054907@nychhc.direct-ci.com

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.

• University Physicians of Brooklyn, Inc.

  • Family Medicine Physician
  • Brooklyn, NY
  • NPI 1366506271
  Medicare reassignment Care Compare group NPD
• University Physicians of Brooklyn, Inc.

  dba Downstate Health Physicians

  • Internal Medicine Physician
  • Brooklyn, NY
  • NPI 1568419000
  NPD
• University Physicians of Brooklyn, Inc.

  dba Downstate Health Physicians

  • Child & Adolescent Psychiatry Physician
  • Brooklyn, NY
  • NPI 1689715476
  NPD
• University Physicians of Brooklyn, Inc

  dba Downstate Health Physicians

  • Anesthesiology Physician
  • Brooklyn, NY
  • NPI 1104878180
  NPD (past)
• Aurora Medical Group, Inc.

  • Durable Medical Equipment & Medical Supplies
  • Oshkosh, WI
  • NPI 1326858044
  NPD (past)

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

• University Hospital of Brooklyn Suny Downstate Health Sciences Univers

  dba SUNY Parkside Dialysis Center

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • Brooklyn, NY
  • NPI 1528027414

  Dialysis facility

  Care Compare affiliation Name & address match
• University Hospital of Brooklyn Suny Downstate Health Sciences Univers

  • General Acute Care Hospital
  • Brooklyn, NY
  • NPI 1639179328
  Care Compare affiliation

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

{
    "created_epoch": "1232496000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781049600000",
    "number": "1912144403",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4777 N DIVERSEY BLVD",
            "city": "WHITEFISH BAY",
            "state": "WI",
            "postal_code": "532111012",
            "telephone_number": "718-809-2689"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "450 CLARKSON AVE",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112032012",
            "telephone_number": "718-270-2848"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NNAJI",
        "first_name": "OKWUDILI",
        "name_prefix": "Dr.",
        "credential": "M D",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2009-01-21",
        "last_updated": "2026-06-10",
        "certification_date": "2026-06-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "NY",
            "license": "273307",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PTAN",
            "identifier": "K400135659",
            "state": "WI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PTAN",
            "identifier": "K400135656",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• NL Pharmacy LLC
• Darlington Chukwunenye Nlemchukwu
• NN Industries
• Ngozi Edith Nnadi, MD
• Ngozichukwu Nkeiruka Nnadozie
• Lilian Nnaka
• Margaret Ozioma Nnamene, RN
• Chinelo Obiageli Nnebe
• Nnenna NP in Family Health Practice PLLC
• Francis Ndu Nnochiri, PHARMD

• 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 Jun 10, 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.