Annika Marie Sysantos Schaefer, MD

Primary specialty

Surgery PhysicianTaxonomy code 208600000X

License

3018799 Issued in MA

Practice address

736 Cambridge St
Boston, MA 02135-2907

Phone

(617) 789-3000

NPI assigned

Apr 17, 2025

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Interoperability endpoints

• Direct secure messaging: aschaefer262829@direct.bmc.masshiway.net
• Direct secure messaging: annika.marie.schaefer.1@2017.direct.athenahealth.com

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

{
    "created_epoch": "1744848000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1720874696",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "604 BOXMERE CT",
            "city": "LUTHERVILLE",
            "state": "MD",
            "postal_code": "210932801"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "736 CAMBRIDGE ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021352907",
            "telephone_number": "617-789-3000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SCHAEFER",
        "first_name": "ANNIKA MARIE",
        "middle_name": "SYSANTOS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-04-17",
        "last_updated": "2025-09-11",
        "certification_date": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "MA",
            "license": "3018799",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Asher D Schachter, M.D.
• Steven C Schachter, MD
• Grace K Schaefer Bennett, DO
• Gavin Schaefer-Hood, MD
• Amber Nicole Schaefer, M.S. ED.
• Elizabeth A Schaefer, MD
• Erin K Schaefer
• Ernst John Schaefer, M.D.
• Esperance Anne Kreek Schaefer, M.D., ,M.P.H.
• Inga-Marie Schaefer, M.D.

• Surgery Physician in Boston, MA
• Providers in Boston, MA by specialty
• Surgery Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.