Individual provider Active NPI

Sasha Stephen, MD

  • Dermatology Physician
  • Boston, MA
National Provider Identifier
1992097646
Registry record updated Jun 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Dermatology PhysicianTaxonomy code 207N00000X
License
294725 Issued in MA
Practice address
75 Francis St
Boston, MA 02115-6110
Phone
(617) 732-5500
NPI assigned
May 12, 2011
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 11, 2026

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

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Dermatology Physician 207N00000X DR.0061520 CO
Student in an Organized Health Care Education/Training Program 390200000X MT199331 PA
Dermatology Physician 207N00000X 294725 MA Primary
Dermatology Physician 207N00000X MT199331 PA
Internal Medicine Physician 207R00000X MT199331 PA

Addresses

Primary practice location

75 Francis St
Boston, MA 02115-6110

Mailing address

75 Francis St
Boston, MA 02115-6110
Phone (617) 732-5500

Other practice location 1

100 Brigham Way
Westwood, MA 02090-2442
Phone (877) 937-8128

Other practice location 2

50 Staniford St
Boston, MA 02114-2517
Phone (617) 726-2914

Other practice location 3

221 Longwood Ave
Boston, MA 02115-5804
Phone (617) 732-4918

Other names 1

  • Aleksandra Stephen Former name

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
I20221006003023 MA Practitioner - Dermatology 3072812585 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Dermatology
Education
Perelman School of Med at the University of Pennsylvania, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Dana-Farber Cancer Institute, Inc.Group PAC ID 9133038904, 671 clinicians
Brigham and Womens Physicians Organization IncGroup PAC ID 3870405988, 2,931 clinicians

Practice addresses (Care Compare)

450 Brookline Ave
Boston, MA 02215-5418
Phone (617) 632-3586

75 Francis St
Boston, MA 02115-6110
Phone (617) 732-5500

Hospital & facility affiliations

  • Dana-Farber Cancer Institute Hospital, Boston, MA, CCN 220162
  • Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of skin lesions344
Removal or shaving of skin growth1-10
Skin biopsy52

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
DR.0061520COMDDermatology Physician
294725MAMDDermatology Physician
MT199331PAMDStudent in an Organized Health Care Education/Training Program

Practice roles

OrganizationSpecialtyStatusNew patients
Dana-Farber Cancer Institute, Inc. CurrentSince Oct 1, 2022 Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Oct 1, 2022 Accepting new patients
Brigham and Women'S Hospital Current Accepting new patients
Brigham & Womens Physicians Organization Inc Dermatology CurrentSince Aug 15, 2022 Accepting new patients

Locations

55 Fruit St
Boston, MA 02114

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

450 Brookline Ave
Boston, MA 02215
Phone (508) 478-2061

75 Francis St
Boston, MA 02115

254 2nd Ave
Ste 100
Needham Heights, MA 02494
Phone (781) 416-8412

Interoperability endpoints

  • Direct secure messaging: stephen.sasha.bwh@direct.partners.masshiway.net

Organizations & group practices 6

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 2

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": "1305158400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781136000000",
    "number": "1992097646",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156110",
            "telephone_number": "617-732-5500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021156110",
            "telephone_number": "617-732-5500"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "100 Brigham Way",
            "address_purpose": "LOCATION",
            "city": "Westwood",
            "state": "MA",
            "postal_code": "020902442",
            "country_code": "US",
            "telephone_number": "877-937-8128",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "50 Staniford St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142517",
            "country_code": "US",
            "telephone_number": "617-726-2914",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "221 Longwood Ave",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021155804",
            "country_code": "US",
            "telephone_number": "617-732-4918",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "STEPHEN",
        "first_name": "SASHA",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2011-05-12",
        "last_updated": "2026-06-11",
        "certification_date": "2026-06-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "CO",
            "license": "DR.0061520",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "PA",
            "license": "MT199331",
            "primary": false
        },
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "MA",
            "license": "294725",
            "primary": true
        },
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "PA",
            "license": "MT199331",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "PA",
            "license": "MT199331",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ALEKSANDRA",
            "last_name": "STEPHEN",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.