Natalie Semenyuk, M.D.

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

230610 Issued in NY

Practice address

6 Technology Dr
East Setauket, NY 11733-4047

Phone

(631) 444-4686

NPI assigned

Jun 13, 2006

Last updated

Jul 13, 2026By the provider in NPPES

Sex

Female

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 3

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

Obstetrics/Gynecology

Education

Other, 1988

Medicare assignment

May accept Medicare assignment

Group practices

Montefiore Medical CenterGroup PAC ID 3779496021, 2,809 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Montefiore Medical Center Hospital, Bronx, NY, CCN 330059

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as group

Promoting interoperability

100

Improvement activities

40

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: nsemenyuk@montefioredirect.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.

• Montefiore Medical Center

  • Anesthesiology Physician
  • Bronx, NY
  • NPI 1063525152

  Obstetrics & Gynecology

  Medicare reassignment Care Compare group NPD
• Montefiore Medical Center

  dba Montefiore Community Pharmacy @ CHAM

  • Community/Retail Pharmacy
  • Bronx, NY
  • NPI 1194183715
  NPD
• Montefiore Medical Center

  • General Acute Care Hospital
  • Bronx, NY
  • NPI 1952476988
  NPD (past)

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

• Montefiore Medical Center

  • General Acute Care Hospital
  • Bronx, NY
  • NPI 1952476988
  Care Compare affiliation

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

{
    "created_epoch": "1150156800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1841232642",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 1559",
            "city": "STONY BROOK",
            "state": "NY",
            "postal_code": "117900989",
            "telephone_number": "631-444-4686"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6 TECHNOLOGY DR",
            "city": "EAST SETAUKET",
            "state": "NY",
            "postal_code": "117334047",
            "telephone_number": "631-444-4686"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SEMENYUK",
        "first_name": "NATALIE",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-06-13",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "NY",
            "license": "230610",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "EMPIRE BC.BS",
            "identifier": "677D11",
            "state": "NY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA",
            "identifier": "7244499",
            "state": "NY"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "02510272",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Laura Seerveld
• Jennifer Seickel
• Corinne Marie Seidl, NP
• Olga Selioutski, DO
• Carrie Semelsberger, NP
• Sangeetha Seshadri, MD.
• Setauket Acupuncture PC
• Setauket Day Spa Inc
• Setauket Li Acupuncture PC
• Setauket Li Acupuncture PC

• Obstetrics & Gynecology Physician in East Setauket, NY
• Providers in East Setauket, NY by specialty
• Obstetrics & Gynecology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.