Individual provider Active NPI

Sebastian M Seifert, M.D.

  • Anesthesiology Physician
  • Boston, MA
National Provider Identifier
1689933756
Registry record updated Jan 6, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
270667 Issued in MA
Practice address
75 Francis St
Boston, MA 02115
Phone
(607) 279-3777
NPI assigned
May 10, 2012
Last updated
Jan 6, 2023By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 6, 2023

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 270667 MA Primary
Obstetrics Physician 207VX0000X 270667 MA

Addresses

Primary practice location

75 Francis St
Boston, MA 02115

Mailing address

75 Francis Street
L1 Anesthesia Offices
Boston, MA 02115
Phone (607) 279-3777

Other practice location 1

300 Longwood Ave
Boston, MA 02115-5724
Phone (617) 355-6000

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
I20171023001103 MA Practitioner - Anesthesiology 6709035819 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
University of Miami, LM Miller School of Medicine, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

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

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 Feb 27, 2025 Accepting new patients
Brigham & Womens Physicians Organization Inc Anesthesiology CurrentSince Jul 1, 2019 Accepting new patients
Brigham and Women's Hospital Current Accepting new patients
Steward Medical Group, Inc CurrentSince May 1, 2019 Accepting new patients
Steward Medical Group, Inc CurrentSince May 1, 2019 Accepting new patients
North Shore Medical Center, Inc. Current Accepting new patients
Massachusetts General Physicians Organization Inc CurrentSince Feb 27, 2025 Accepting new patients
CHMC Anesthesia Foundation Inc Anesthesiology CurrentSince Jan 1, 2023 Accepting new patients
Brigham and Womens Physicians Organization Inc Past Accepting new patients

Locations

300 Longwood Ave
Boston, MA 02115
Phone (617) 355-4956

55 Fruit St
Boston, MA 02114

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

75 Francis St
Boston, MA 02115

75 Francis St
Ofc
Boston, MA 02115
Phone (617) 525-8268

235 N Pearl St
Brockton, MA 02301
Phone (508) 427-2525

830 Oak St
Ste 223E
Brockton, MA 02301
Phone (508) 586-3683

100 Amesbury St
Ste 103
Lawrence, MA 01840
Phone (978) 683-0157

Interoperability endpoints

  • Direct secure messaging: seifert.sara.bwh@direct.partners.masshiway.net
  • Direct secure messaging: seifert.sebastian.bwh@direct.partners.masshiway.net
  • Direct secure messaging: sseifert22975@direct.bostonchildrens.org

Organizations & group practices 9

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 1

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": "1336608000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1672963200000",
    "number": "1689933756",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "75 FRANCIS STREET",
            "address_2": "L1 ANESTHESIA OFFICES",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "607-279-3777"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "75 FRANCIS ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "02115",
            "telephone_number": "607-279-3777"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "300 Longwood Ave",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021155724",
            "country_code": "US",
            "telephone_number": "617-355-6000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SEIFERT",
        "first_name": "SEBASTIAN",
        "middle_name": "M",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-05-10",
        "last_updated": "2023-01-06",
        "certification_date": "2023-01-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "MA",
            "license": "270667",
            "primary": true
        },
        {
            "code": "207VX0000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Obstetrics",
            "state": "MA",
            "license": "270667",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.