Martha Kenyon Nicholson, MD

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

336971 Issued in NY

Practice address

100 Woods Rd
Valhalla, NY 10595-1530

Phone

(914) 493-7000

NPI assigned

Nov 20, 2006

Sex

Female

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in CA, DE, CT, NY4 enrollments

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 4

Specialty

Pediatric Medicine

Education

University of California, Davis School of Medicine, 1996

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• LPCH Medical Group Div of Lucile

  • Children's Hospital
  • Palo Alto, CA
  • NPI 1417907940

  Pediatrics

  Medicare reassignment NPD
• Permanente Medical Group Inc

  • Internal Medicine Physician
  • Santa Clara, CA
  • NPI 1073606299

  Pediatrics

  Medicare reassignment NPD
• Stanford Health Care

  • General Acute Care Hospital
  • Stanford, CA
  • NPI 1437292927

  Pediatrics

  Medicare reassignment NPD
• The Nemours Foundation

  • Multi-Specialty Clinic/Center
  • Wilmington, DE
  • NPI 1366594699
  Medicare reassignment NPD
• Weill Medical College of Cornell

  • Internal Medicine Physician
  • New York, NY
  • NPI 1124170212
  Medicare reassignment
• Stamford Health Medical Group Inc

  • General Practice Physician
  • Stamford, CT
  • NPI 1154633980
  Medicare reassignment
• Permanente Medical Group Inc

  • Internal Medicine Physician
  • Stockton, CA
  • NPI 1548343510

  Pediatrics

  NPD
• Permanente Medical Group, Inc

  • Clinical Medical Laboratory
  • San Jose, CA
  • NPI 1497971584
  NPD
• Stanford Health Care

  • Radiation Oncology Physician
  • Pleasanton, CA
  • NPI 1124561758
  NPD
• Stanford Health Care

  • Specialty Pharmacy
  • Mountain View, CA
  • NPI 1760366132
  NPD
• The Nemours Foundation

  • Children's Hospital
  • Wilmington, DE
  • NPI 1467505073
  NPD

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

{
    "created_epoch": "1163980800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788480000000",
    "number": "1578637880",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 WOODS RD",
            "city": "VALHALLA",
            "state": "NY",
            "postal_code": "105951530",
            "telephone_number": "914-493-7000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 WOODS RD",
            "city": "VALHALLA",
            "state": "NY",
            "postal_code": "105951530",
            "telephone_number": "914-493-7000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NICHOLSON",
        "first_name": "MARTHA",
        "middle_name": "KENYON",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-11-20",
        "last_updated": "2026-09-04",
        "certification_date": "2026-09-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "NY",
            "license": "336971",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "NY",
            "license": "336971",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A63320",
            "primary": false
        },
        {
            "code": "2080P0202X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Cardiology",
            "state": "CA",
            "license": "A63320",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CA",
            "license": "A63320",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A633200",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Khang Manh Nguyen, MD
• Lawrence-Linh T Nguyen Jr., DDS
• Lina Hanh Nguyen, PA-C
• Thanh-Thanh Nguyen
• Daniel Gilbert Nicastri, M.D.
• Angelique Louise Nicolai, M.D.
• Seigo Nishida, MD
• Sandra Nkrumah
• Erin Taylor Noel
• Rajat Nog, M.D.

• Hospitalist Physician in Valhalla, NY
• Providers in Valhalla, NY by specialty
• Hospitalist Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 4, 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.