Alexander S Weller, MD

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

298688 Issued in NY

Practice address

55 Water St FL 18
New York, NY 10041-0055

Phone

(347) 774-8000

NPI assigned

Mar 31, 2015

Sex

Male

Sole proprietor

No

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

Specialties & licenses 5

Addresses

Medicare fee-for-service enrollment

Enrolled in PA, NY2 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 2

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

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

Interoperability endpoints

• Direct secure messaging: aweller1853025@nychhc.direct-ci.com
• Direct secure messaging: aweller164470@direct-guthrie.org

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.

• Samaritan Hospital of Troy, New York

  • General Acute Care Hospital
  • Troy, NY
  • NPI 1043267727

  Internal Medicine

  Medicare reassignment NPD
• St. Peter's Hospital of the City of Albany

  dba St. Peter's Hospital

  • General Acute Care Hospital
  • Albany, NY
  • NPI 1518042357

  Internal Medicine

  Medicare reassignment NPD
• Evangelical Medical Services Organization

  dba WellSpan Behavioral Health

  • Surgery Physician
  • Lewisburg, PA
  • NPI 1205928967

  Internal Medicine

  Medicare reassignment NPD
• New York University

  dba NYU Faculty Group Practice

  • Cardiovascular Disease Physician
  • Boynton Beach, FL
  • NPI 1285826438

  Internal Medicine, NY

  Medicare reassignment NPD
• Regional Health Services Inc

  • Family Medicine Physician
  • Erie, PA
  • NPI 1174520654

  Internal Medicine

  Medicare reassignment NPD
• The Milton S Hershey Medical Center Physicians Group

  • Orthopaedic Surgery Physician
  • Hershey, PA
  • NPI 1710951744
  Medicare reassignment NPD
• St. Peter's Hospital of the City of Albany

  • General Acute Care Hospital
  • Albany, NY
  • NPI 1497701106

  Internal Medicine

  NPD
• Evangelical Medical Services Organization

  dba WellSpan Urology

  • Urology Physician
  • Lewisburg, PA
  • NPI 1083412084
  NPD
• Evangelical Medical Services Organization

  dba WellSpan Family Medicine

  • Family Medicine Physician
  • Lewisburg, PA
  • NPI 1295834984

  Internal Medicine

  NPD
• New York University

  dba NYU Langone Ambulatory Care Chelsea

  • Physical Medicine & Rehabilitation Physician
  • Boynton Beach, FL
  • NPI 1104787613

  Internal Medicine

  NPD
• The Milton S Hershey Medical Center Physician Group

  • Body Imaging Physician
  • Hershey, PA
  • NPI 1346215928
  NPD
• The Milton S Hershey Medical Center Physicians Group

  • Internal Medicine Physician
  • Hershey, PA
  • NPI 1609841337
  NPD

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

{
    "created_epoch": "1427760000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776729600000",
    "number": "1295120848",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1244 DICKINSON DR",
            "city": "YARDLEY",
            "state": "PA",
            "postal_code": "190672917"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 WATER ST FL 18",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100410055",
            "telephone_number": "347-774-8000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "250 N 10th St",
            "address_2": "Suite 428",
            "address_purpose": "LOCATION",
            "city": "Brooklyn",
            "state": "NY",
            "postal_code": "112112826",
            "country_code": "US",
            "telephone_number": "267-566-2440",
            "fax_number": "215-369-9993",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1244 Dickinson Dr",
            "address_purpose": "LOCATION",
            "city": "Yardley",
            "state": "PA",
            "postal_code": "190672917",
            "country_code": "US",
            "telephone_number": "215-369-9993",
            "fax_number": "215-369-9993",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WELLER",
        "first_name": "ALEXANDER",
        "middle_name": "S",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-03-31",
        "last_updated": "2026-04-21",
        "certification_date": "2026-04-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "NY",
            "license": "298688",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "VA",
            "license": "0101282982",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "298688",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "PA",
            "license": "MD462955",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "PA",
            "license": "MD462955",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Wellcare Health Insurance of New York, Inc.
• Wellcare of New York, Inc.
• Wellcheck LLC
• Carrie Wellen
• David Wellen, PH.D.
• Christopher Francis Weller, PHD
• Elaine Patricia Weller, B.S., M.S. ED
• John Rowett Weller, MD
• Mark Andreas Weller, M.D.
• Rachel Weller, PSYD.

• Hospitalist Physician in New York, NY
• Providers in New York, 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 Apr 21, 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.