Howard Scott Seiden, M.D.

Primary specialty

Pediatric Cardiology PhysicianTaxonomy code 2080P0202X

License

188021 Issued in NY

Practice address

100 Woods Rd
Valhalla, NY 10595-1530

Phone

(914) 614-4250

NPI assigned

Nov 16, 2006

Sex

Male

Sole proprietor

Yes

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

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

Interoperability endpoints

• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

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.

• Boston Children'S Health Physicians, LLP

  • Pediatrics Physician
  • Hawthorne, NY
  • NPI 1467454967
  Medicare reassignment NPD
• Boston Childrens Health Physicians LLP

  • Clinical Medical Laboratory
  • Sleepy Hollow, NY
  • NPI 1588651079
  NPD (past)

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

{
    "created_epoch": "1163635200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782259200000",
    "number": "1043383391",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "400 COLUMBUS AVE STE 200E",
            "city": "VALHALLA",
            "state": "NY",
            "postal_code": "105951392",
            "telephone_number": "914-614-4200"
        },
        {
            "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": "914-614-4250"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "19 Bradhurst Ave Ste 1400",
            "address_purpose": "LOCATION",
            "city": "Hawthorne",
            "state": "NY",
            "postal_code": "105322140",
            "country_code": "US",
            "telephone_number": "914-614-4250",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SEIDEN",
        "first_name": "HOWARD",
        "middle_name": "SCOTT",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-11-16",
        "last_updated": "2026-06-24",
        "certification_date": "2026-06-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "NY",
            "license": "188021",
            "primary": false
        },
        {
            "code": "2080P0202X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Cardiology",
            "state": "NY",
            "license": "188021",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Wayne Seaton, MD
• Demy Ann Sebastian, FNP
• Regina Caeli Lucia Secara, RN
• Robert F Seefeldt Jr., M.S., CCC-SLP
• Eliana Segal
• Niki Sekandari, MD
• Nitin Sekhri
• Jay Edward Selman, M.D.
• Jessica Nicole Semegram-Wortman, M.A. OTR/L
• Kowshik Sen, DO

• Pediatric Cardiology Physician in Valhalla, NY
• Providers in Valhalla, NY by specialty
• Pediatric Cardiology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 24, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.