Quinlan Sievers, MD/PHD

Primary specialty

Medical Oncology PhysicianTaxonomy code 207RX0202X

License

318552 Issued in NY

Practice address

1275 York Ave
New York, NY 10065-6007

Phone

(212) 639-7900

NPI assigned

Mar 23, 2019

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

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

Medical OncologyAlso: Internal Medicine

Education

Harvard Medical School, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Memorial Hematology Lymphoma GroupGroup PAC ID 7113816489, 215 clinicians

Memorial Medical Consultation GroupGroup PAC ID 6406755081, 82 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Memorial Hospital for Cancer and Allied Diseases Hospital, New York, NY, CCN 330154

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

Practice roles

Locations

Networks

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

Interoperability endpoints

• Direct secure messaging: qsievers96367@mskcc.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 and National Provider Directory roles.

• Memorial Hematology Lymphoma Group

  • Hematology & Oncology Physician
  • New York, NY
  • NPI 1891766366

  Medical Oncology

  Medicare reassignment Care Compare group NPD
• Memorial Medical Consultation Group

  • Internal Medicine Physician
  • New York, NY
  • NPI 1053382523
  Medicare reassignment Care Compare group
• Mskcc Clinical Practice Plan

  • Medical Oncology Physician
  • New York, NY
  • NPI 1588789341
  Medicare reassignment NPD
• Memorial Hematology Lymphoma Group

  • Medical Oncology Physician
  • New York, NY
  • NPI 1245945021
  NPD
• Mskcc Clinical Practice Plan

  • Urology Physician
  • New York, NY
  • NPI 1306096508
  NPD

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

• Memorial Hospital for Cancer and Allied Diseases

  • General Acute Care Hospital
  • New York, NY
  • NPI 1700887411
  Care Compare affiliation
• Ralph Lauren Center for Cancer Care and Prevention

  • Special Hospital
  • New York, NY
  • NPI 1770046351
  Care Compare affiliation
• Memorial Hospital for Cancer & Allied Diseases

  • General Acute Care Hospital
  • Basking Ridge, NJ
  • NPI 1659385474
  Care Compare affiliation
• Memorial Sloan Kettering Bergen

  • General Acute Care Hospital
  • Montvale, NJ
  • NPI 1841650330
  Care Compare affiliation
• Memorial Sloan Kettering Monmouth

  • General Acute Care Hospital
  • Middletown, NJ
  • NPI 1528428521
  Care Compare affiliation

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

{
    "created_epoch": "1553299200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751846400000",
    "number": "1700346897",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1275 YORK AVE",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100656007",
            "telephone_number": "212-639-7900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1275 YORK AVE",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100656007",
            "telephone_number": "212-639-7900"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIEVERS",
        "first_name": "QUINLAN",
        "name_prefix": "Dr.",
        "credential": "MD/PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-23",
        "last_updated": "2025-07-07",
        "certification_date": "2025-07-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "NY",
            "license": "318552",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Carolina Gisela Sierra, M.D.
• Isabella Victoria Sierra, M.PSY
• Maria Alicia Sierra
• Miguel Angel Sierra, LMT
• Sarah Sietsema, MS, CCC-SLP
• Sook Fong Siew, LCSW
• Avery Sifferman
• Yara Sifri, MD
• Rachel L Sifry, PHD
• Ian Randall Sigal, MD

• Medical Oncology Physician in New York, NY
• Providers in New York, NY by specialty
• Medical Oncology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 7, 2025; 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.