Individual provider Active NPI

Alexandra Stillman, M.D.

  • Neurology Physician
  • Boston, MA
National Provider Identifier
1710206248
Registry record updated Feb 12, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurology PhysicianTaxonomy code 2084N0400X
License
258259 Issued in MA
Practice address
330 Brookline Ave
Kirstein 4
Boston, MA 02215-5400
Phone
(617) 667-7000
NPI assigned
May 24, 2010
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Feb 12, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Neurology Physician 2084N0400X 258259 MA Primary

Addresses

Primary practice location

330 Brookline Ave
Kirstein 4
Boston, MA 02215-5400

Mailing address

330 Brookline Ave
Kirstein 4
Boston, MA 02215-5400
Phone (617) 667-7000

Other practice location 1

55 Fruit St
Boston, MA 02114-2621
Phone (617) 349-5708

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
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

Enrollment IDStateProvider typePAC IDDetails
I20140623000991 MA Practitioner - Neurology 8820212400 Reassigns benefits to 6 organizations

Care Compare profile

Medicare Care Compare
Specialty
Neurology
Education
Boston University School of Medicine, 2010
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr IncGroup PAC ID 4486567104, shared by 12 NPIs, 1,693 clinicians

Practice addresses (Care Compare)

1 Deaconess Rd
Boston, MA 02215-5321
Phone (781) 983-9088

330 Brookline Ave
Boston, MA 02215-5400
Phone (617) 754-8612

55 Fruit St
Boston, MA 02114-2696
Phone (617) 724-0287

600 Unicorn Park Dr
Woburn, MA 01801-3376

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
The General Hospital Corporation CurrentSince Jan 7, 2025 Accepting new patients
Beth Israel Deaconess Medical Center, Inc. CurrentSince Jul 1, 2014 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Current Accepting new patients
Mt Auburn Professional Services Neurology CurrentSince Oct 1, 2017 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr, Inc Neurology CurrentSince Jul 1, 2014 Accepting new patients
Mount Auburn Professional Services Inc Neurology CurrentSince Oct 1, 2017 Accepting new patients
Massachusetts General Physicians Organization Inc Neurology CurrentSince Jan 7, 2025 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Jul 1, 2014 Accepting new patients
Beth Israel Deaconess Medical Center, Inc. CurrentSince Jul 1, 2014 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Aug 1, 2025 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Past Accepting new patients

Locations

55 Fruit St
#2
Boston, MA 02114
Phone (617) 726-2967

330 Brookline Ave
Boston, MA 02215
Phone (617) 667-2000

55 Fruit St
Boston, MA 02114

330 Brookline Ave
#407
Boston, MA 02215

330 Brookline Ave
#4
Boston, MA 02215
Phone (617) 667-1282

300 Mount Auburn St
Ste 316
Cambridge, MA 02138
Phone (617) 868-0880

57 Bedford St
Ste 130
Lexington, MA 02420
Phone (781) 484-7500

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/86/brand/1/csg/1/fhir/r4
  • Direct secure messaging: astillman253521@direct.bilh.masshiway.net

Organizations & group practices 11

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.

Hospital & facility affiliations 3

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

NPI Registry JSON

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

{
    "created_epoch": "1274659200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770854400000",
    "number": "1710206248",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "330 BROOKLINE AVE",
            "address_2": "KIRSTEIN 4",
            "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",
            "address_2": "KIRSTEIN 4",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155400",
            "telephone_number": "617-667-7000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "55 Fruit St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142621",
            "country_code": "US",
            "telephone_number": "617-349-5708",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "STILLMAN",
        "first_name": "ALEXANDRA",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2010-05-24",
        "last_updated": "2026-02-12",
        "certification_date": "2025-03-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "MA",
            "license": "258259",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.