Ashley Lauren Greiner, M.D., M.P.H.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

Practice address

330 Brookline Ave
Boston, MA 02215-5400

Phone

(617) 667-7000

NPI assigned

Apr 6, 2010

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

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": "1270512000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778457600000",
    "number": "1528383221",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "330 BROOKLINE AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155400",
            "telephone_number": "617-667-7000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "330 BROOKLINE AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155400",
            "telephone_number": "617-667-7000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GREINER",
        "first_name": "ASHLEY",
        "middle_name": "LAUREN",
        "credential": "M.D., M.P.H.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2010-04-06",
        "last_updated": "2026-05-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MD",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kameko Gregory
• Katherine Rose Gregory, MD
• Margaret M Gregowicz, M.S., CCC-A
• Dan Greif, PSYD
• Astrea Greig, PSY.D.
• Jack V Greiner, D.O.
• Anna Greka, M.D.
• Marc James Grella, MD
• Jillian C Grelle, PT
• Hayley Faye Grelson, PA-C

• 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 May 11, 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.