Individual provider Active NPI

Justin Granstein, MD

  • Neurology Physician
  • Boston, MA
National Provider Identifier
1699169599
Registry record updated Jul 20, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurology PhysicianTaxonomy code 2084N0400X
License
1015998 Issued in MA
Practice address
110 Francis St Ste 3B
Boston, MA 02215-5501
Phone
(617) 632-7246
NPI assigned
Mar 27, 2015
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 20, 2023

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Neurocritical Care Physician 2084A2900X 1015998 MA
Neurology Physician 2084N0400X 1015998 MA Primary

Addresses

Primary practice location

110 Francis St Ste 3B
Boston, MA 02215-5501

Mailing address

110 Francis St Ste 3B
Boston, MA 02215-5501

Other practice location 1

200 S Manchester Ave Ste 210
Orange, CA 92868-3211
Phone (714) 456-7495

Other practice location 2

101 The City Dr S
Orange, CA 92868-3201
Phone (714) 880-7812

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, MA2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20210506003022 CA Practitioner - Neurology 5496067753 Reassigns benefits to 1 organization
I20230912000288 MA Practitioner - Neurology 5496067753 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Neurology
Education
Other, 2015
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)

110 Francis St
Boston, MA 02215-5501
Phone (617) 632-7246

Hospital & facility affiliations

  • Beth Israel Deaconess Medical Center Hospital, Boston, MA, CCN 220086
  • Beth Israel Deaconess Hospital Plymouth Hospital, Plymouth, MA, CCN 220060
  • Cape Cod Hospital Hospital, Hyannis, MA, CCN 220012

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Sep 1, 2023 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Aug 1, 2025 Accepting new patients
Regents of the University of California CurrentSince Jul 1, 2021 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Sep 1, 2023 Accepting new patients
Beth Israel Deaconess Medical Center, Inc. Past Accepting new patients
Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Ce Past Accepting new patients

Locations

101 The City Dr S
Bldg 30
Orange, CA 92868
Phone (714) 456-6966

101 The City Dr S
Orange, CA 92868
Phone (714) 456-6054

110 Francis St
Ste 3B
Boston, MA 02215
Phone (617) 632-7246

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

110 Francis St
Boston, MA 02215
Phone (617) 632-7246

247 Station Dr
Ste NW1
Westwood, MA 02090
Phone (617) 754-1015

Interoperability endpoints

  • Direct secure messaging: jgranstein334407@direct.bilh.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 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": "1427414400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1689811200000",
    "number": "1699169599",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "110 FRANCIS ST STE 3B",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155501"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "110 FRANCIS ST STE 3B",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155501",
            "telephone_number": "617-632-7246"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "200 S Manchester Ave Ste 210",
            "address_purpose": "LOCATION",
            "city": "Orange",
            "state": "CA",
            "postal_code": "928683211",
            "country_code": "US",
            "telephone_number": "714-456-7495",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "101 The City Dr S",
            "address_purpose": "LOCATION",
            "city": "Orange",
            "state": "CA",
            "postal_code": "928683201",
            "country_code": "US",
            "telephone_number": "714-880-7812",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GRANSTEIN",
        "first_name": "JUSTIN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-03-27",
        "last_updated": "2023-07-20",
        "certification_date": "2023-07-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084A2900X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurocritical Care",
            "state": "MA",
            "license": "1015998",
            "primary": false
        },
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "MA",
            "license": "1015998",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.