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

Last updated

Sep 22, 2026By the provider in NPPES

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

Practice roles

Locations

Networks

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

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Boston Children's Health Physicians, LLP

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

  dba Boston Childrens Health Physicians Pediatric Endocrinology Division

  • 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": "1790035200000",
    "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"
        },
        {
            "address_1": "707 E Main St",
            "address_purpose": "LOCATION",
            "city": "Middletown",
            "state": "NY",
            "postal_code": "109402650",
            "country_code": "US",
            "telephone_number": "914-614-4250",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "266 North St Ste 2B",
            "address_purpose": "LOCATION",
            "city": "Newburgh",
            "state": "NY",
            "postal_code": "125503131",
            "country_code": "US",
            "telephone_number": "914-614-4250",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "45 Reade Pl",
            "address_purpose": "LOCATION",
            "city": "Poughkeepsie",
            "state": "NY",
            "postal_code": "126013947",
            "country_code": "US",
            "telephone_number": "914-614-4250",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "241 North Rd",
            "address_purpose": "LOCATION",
            "city": "Poughkeepsie",
            "state": "NY",
            "postal_code": "126011154",
            "country_code": "US",
            "telephone_number": "914-614-4250",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "212 Crystal Run Rd",
            "address_purpose": "LOCATION",
            "city": "Middletown",
            "state": "NY",
            "postal_code": "109414009",
            "country_code": "US",
            "telephone_number": "914-614-4250",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1 Webster Ave Ste 300",
            "address_purpose": "LOCATION",
            "city": "Poughkeepsie",
            "state": "NY",
            "postal_code": "126011362",
            "country_code": "US",
            "telephone_number": "914-614-4250",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "257 Lafayette Ave Ste 370",
            "address_purpose": "LOCATION",
            "city": "Suffern",
            "state": "NY",
            "postal_code": "109014831",
            "country_code": "US",
            "telephone_number": "914-614-4250",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "255 Lafayette Ave",
            "address_purpose": "LOCATION",
            "city": "Suffern",
            "state": "NY",
            "postal_code": "109014812",
            "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": "2026-09-22",
        "certification_date": "2026-09-22",
        "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 Sep 22, 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.