Sydney Hannah Russell Leed, MD

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

MD20551 Issued in RI

Practice address

1493 Cambridge St
Cambridge, MA 02139-1099

Phone

(617) 665-1000

NPI assigned

Jan 24, 2020

Reactivated

Apr 14, 2021

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in RI

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

Specialty

Psychiatry

Education

Other, 2021

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: sleed111724@direct.challiance.masshiway.net

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.

• The Providence Center Inc

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Providence, RI
  • NPI 1104847946

  Psychiatry

  Medicare reassignment NPD
• Cambridge Public Health Commission

  • General Acute Care Hospital
  • Cambridge, MA
  • NPI 1487603585
  NPD
• The Providence Center

  • Community/Behavioral Health Agency
  • Providence, RI
  • NPI 1134977598

  Psychiatry

  NPD (past)

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

{
    "created_epoch": "1579824000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759795200000",
    "number": "1235769514",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1493 CAMBRIDGE ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021391099",
            "telephone_number": "617-665-1000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1493 CAMBRIDGE ST",
            "city": "CAMBRIDGE",
            "state": "MA",
            "postal_code": "021391099",
            "telephone_number": "617-665-1000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "530 N Main St",
            "address_purpose": "LOCATION",
            "city": "Providence",
            "state": "RI",
            "postal_code": "029045762",
            "country_code": "US",
            "telephone_number": "401-274-2500",
            "fax_number": "401-276-4125",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "766 Irving Ave",
            "address_purpose": "LOCATION",
            "city": "Syracuse",
            "state": "NY",
            "postal_code": "132101630",
            "country_code": "US",
            "telephone_number": "603-686-2612",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RUSSELL LEED",
        "first_name": "SYDNEY",
        "middle_name": "HANNAH",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-01-24",
        "last_updated": "2025-10-07",
        "certification_date": "2025-10-07",
        "deactivation_date": "2021-03-20",
        "reactivation_date": "2021-04-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "RI",
            "license": "MD20551",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jacquelyn Nicole Rupp
• Kaitlin Elizabeth Ruppel, M.S., CCC-SLP
• John Thomas Rusnock, DMD
• Angelee Russ-Carbin, MSW, MPH
• Russell L Forman, DMD, PC
• Hannah Elizabeth Russell, RD, LDN, CNSC
• Zlatka Russinova, PHD
• Pooja Rutberg, MD
• William A Ruth, MD
• Frederick W Ruymann, MD

• Psychiatry Physician in Cambridge, MA
• Providers in Cambridge, MA by specialty
• Psychiatry Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 7, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.