Isabella Martyna Chojnacki, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

340670 Issued in NY

Practice address

41 E Post Rd
White Plains, NY 10601-4699

Phone

(914) 681-0600

NPI assigned

May 11, 2022

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

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

Internal Medicine

Education

Other, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

East Post Road Medical Services PCGroup PAC ID 6406198506, 419 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• White Plains Hospital Center Hospital, White Plains, NY, CCN 330304

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

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.

• East Post Road Medical Services PC

  • Emergency Medicine Physician
  • White Plains, NY
  • NPI 1841767274
  Medicare reassignment Care Compare group
• White Plains Hospital Medical Center

  • General Acute Care Hospital
  • White Plains, NY
  • NPI 1447255153
  NPD (past)

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

• White Plains Hospital Medical Center

  • General Acute Care Hospital
  • White Plains, NY
  • NPI 1447255153
  Care Compare affiliation

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

{
    "created_epoch": "1652227200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768176000000",
    "number": "1013653153",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "41 E POST RD",
            "city": "WHITE PLAINS",
            "state": "NY",
            "postal_code": "106014699"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "41 E POST RD",
            "city": "WHITE PLAINS",
            "state": "NY",
            "postal_code": "106014699",
            "telephone_number": "914-681-0600"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHOJNACKI",
        "first_name": "ISABELLA",
        "middle_name": "MARTYNA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-05-11",
        "last_updated": "2026-01-12",
        "certification_date": "2026-01-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MI",
            "license": "4351049274",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "340670",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Sung Un Choe, DDS
• Hyeyoon Choi, DDS
• John Choi
• Song Choi
• Byron Choice
• Samuel Choura
• Mohammed S Chowdhury, DPM
• Christian John Inc
• Maureen Christiano
• Olympia Christoforatos

• Internal Medicine Physician in White Plains, NY
• Providers in White Plains, NY by specialty
• Internal Medicine Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 12, 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.