NPIMap

Individual provider Active NPI

Nathaniel Alexander Steiger, M.D.

  • Cardiovascular Disease Physician
  • Burlington, MA
National Provider Identifier
1780023390
Registry record updated Sep 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
272841 Issued in MA
Practice address
41 Mall Rd
Burlington, MA 01805-0002
Phone
(781) 744-8000
NPI assigned
Jun 17, 2013
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 9, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Cardiac Electrophysiology Physician 207RC0001X 272841 MA
Cardiovascular Disease Physician 207RC0000X 272841 MA Primary

Addresses

Primary practice location

41 Mall Rd
Burlington, MA 01805-0002

Mailing address

41 Mall Rd
Burlington, MA 01805-0002
Phone (781) 744-8000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY, MA2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20160902001549 NY Practitioner - Internal Medicine 5799900155 Reassigns benefits to 1 organization
I20220415001005 MA Practitioner - Cardiovascular Disease (Cardiology) 5799900155 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Boston University School of Medicine, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Capital Cardiology Associates PLLCGroup PAC ID 1254228240, 72 clinicians

Practice addresses (Care Compare)

7 Southwoods Blvd
Albany, NY 12211-2514
Phone (518) 292-6000

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Pacemaker insertion or repair58

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Albany Medical College CurrentSince Jul 11, 2016 Accepting new patients
Albany Medical College Internal Medicine Current Accepting new patients
Harbor Medical Associates, Inc. CurrentSince Apr 1, 2024 Accepting new patients
Brigham & Womens Physicians Organization Inc Internal Medicine CurrentSince Apr 11, 2022 Accepting new patients
Capital Cardiology Associates PLLC Cardiovascular Disease CurrentSince Sep 1, 2025 Accepting new patients
Harbor Medical Associates, Inc. Internal Medicine CurrentSince Apr 1, 2024 Accepting new patients
Albany Medical College Internal Medicine CurrentSince Jul 11, 2016 Accepting new patients
Albany Medical College Cardiovascular Disease Current Accepting new patients
Burdett Orthopedics, PC PastSince Mar 1, 2010 Accepting new patients

Locations

800 Washington St
#315
Boston, MA 02111
Phone (617) 636-2273

75 Francis St
Boston, MA 02115

62 13th St
Charlestown, MA 02129
Phone (617) 724-4260

541 Main St
Ste 314
Weymouth, MA 02190
Phone (781) 952-1200

47 New Scotland Ave
Albany, NY 12208
Phone (518) 262-3773

7 Southwoods Blvd
Ste 17
Albany, NY 12211
Phone (518) 292-6035

7 Southwoods Blvd
Albany, NY 12211
Phone (518) 292-6060

2200 Burdett Ave
Ste 202
Troy, NY 12180
Phone (518) 272-0122

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 and National Provider Directory roles.

Hospital & facility affiliations 4

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": "1371427200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788912000000",
    "number": "1780023390",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "41 MALL RD",
            "city": "BURLINGTON",
            "state": "MA",
            "postal_code": "018050002",
            "telephone_number": "781-744-8000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "41 MALL RD",
            "city": "BURLINGTON",
            "state": "MA",
            "postal_code": "018050002",
            "telephone_number": "781-744-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STEIGER",
        "first_name": "NATHANIEL",
        "middle_name": "ALEXANDER",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2013-06-17",
        "last_updated": "2026-09-09",
        "certification_date": "2026-09-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Clinical Cardiac Electrophysiology",
            "state": "MA",
            "license": "272841",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "MA",
            "license": "272841",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Burlington, MA

Sources for this page

Verify at the official NPI Registry.