Irene Tien, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

159223 Issued in MA

Practice address

91 E Concord St
RM 6215
Boston, MA 02118-2644

Phone

(617) 414-4397

Fax

(617) 414-4393

NPI assigned

May 10, 2006

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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

{
    "created_epoch": "1147219200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1649220955",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2 CLARENDON ST",
            "address_2": "APT 702",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021166137",
            "telephone_number": "617-267-1217",
            "fax_number": "617-267-1217"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "91 E CONCORD ST",
            "address_2": "RM 6215",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021182644",
            "telephone_number": "617-414-4397",
            "fax_number": "617-414-4393"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TIEN",
        "first_name": "IRENE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-10",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MA",
            "license": "159223",
            "primary": true
        },
        {
            "code": "207PP0204X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Pediatric Emergency Medicine",
            "state": "MA",
            "license": "159223",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3193233",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Baruch Solomon Ticho, MD PHD
• Luis Ticona, M.D.
• Maria Ticona
• Kevin Tie, MD
• Marisa G Tieger, MD
• Isha Tiernan, M.D.
• Kelly Alaina Tiernan
• Dylan Blue Tierney, MD, MPH
• Lauren C Tierney, PNP-AC
• Margaret Tierney, BCBA, LABA

• Emergency Medicine Physician in Boston, MA
• Providers in Boston, MA by specialty
• Emergency Medicine Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.