Clayton Sean Abeln, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

39597 Issued in NH

Practice address

333 Borthwick Ave
Portsmouth, NH 03801-4198

Phone

(603) 436-5110

NPI assigned

May 12, 2022

Last updated

Jul 12, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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 CT

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

Emergency Medicine

Education

Other, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Yale UniversityGroup PAC ID 9436061736, 2,632 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Yale-New Haven Hospital Hospital, New Haven, CT, CCN 070022

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: cabeln552609@directhisp.wakemed.org
• Direct secure messaging: cabeln724160@direct.ynhh.org
• Direct secure messaging: cabeln891381@direct.unc.nchie.net

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.

• Yale University

  dba Yale Medicine

  • Anesthesiology Physician
  • New Haven, CT
  • NPI 1205822236

  Emergency Medicine

  Medicare reassignment Care Compare group NPD
• Yale University

  • Durable Medical Equipment & Medical Supplies
  • Fairfield, CT
  • NPI 1548066962
  NPD

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

• Yale New Haven Hospital

  • General Acute Care Hospital
  • New Haven, CT
  • NPI 1336139500
  Care Compare affiliation
• Yale New Haven Hospital

  • General Acute Care Hospital
  • New Haven, CT
  • NPI 1578778726
  Care Compare affiliation

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

{
    "created_epoch": "1652313600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783814400000",
    "number": "1740926633",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "333 BORTHWICK AVE",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038014198",
            "telephone_number": "603-436-5110"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "333 BORTHWICK AVE",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038014198",
            "telephone_number": "603-436-5110"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "10 Central Ave",
            "address_purpose": "LOCATION",
            "city": "Dover",
            "state": "NH",
            "postal_code": "038204020",
            "country_code": "US",
            "telephone_number": "603-740-1500",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "11 Whitehall Rd",
            "address_purpose": "LOCATION",
            "city": "Rochester",
            "state": "NH",
            "postal_code": "038673297",
            "country_code": "US",
            "telephone_number": "603-332-5211",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "603 Lafayette Rd",
            "address_purpose": "LOCATION",
            "city": "Seabrook",
            "state": "NH",
            "postal_code": "038744279",
            "country_code": "US",
            "telephone_number": "603-474-6400",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ABELN",
        "first_name": "CLAYTON",
        "middle_name": "SEAN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-05-12",
        "last_updated": "2026-07-12",
        "certification_date": "2026-07-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "NH",
            "license": "39597",
            "primary": true
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CT",
            "license": "80682",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jill Abbott
• Lauren Abbott, MD
• Raschel Abbott, DPT
• Meghan Abdelmohsen
• Ramona V Abella, LCMHC
• Abilities Rehabilitation Center, LLC
• Danilo Nagtalon Ablan, MD
• Anwar Musbah Abouhamra, M.D
• Acadian Emergency Physicians, LLC
• Access Sports Medicine & Orthopaedics, PLLC

• Emergency Medicine Physician in Portsmouth, NH
• Providers in Portsmouth, NH by specialty
• Emergency Medicine Physician in New Hampshire

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 12, 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.