Cassie Elaine Leonard, MD

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

293306 Issued in NY

Practice address

90 South St
Glens Falls, NY 12801-4328

Phone

(518) 792-7841

Fax

(518) 932-0289

NPI assigned

Sep 6, 2007

Last updated

Mar 13, 2026By the provider in NPPES

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

Other identifiers 1

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in NY

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

Obstetrics/Gynecology

Education

West Virginia University School of Medicine, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Hudson Headwaters Health NetworkGroup PAC ID 7416861208, 221 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Glens Falls Hospital Hospital, Glens Falls, NY, CCN 330191

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: cassie.leonard.1@1823.direct.athenahealth.com

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.

• Hudson Headwaters Health Network

  • Primary Care Clinic/Center
  • Warrensburg, NY
  • NPI 1194738344

  Obstetrics & Gynecology

  Medicare reassignment Care Compare group NPD
• Hudson Headwaters Health Network

  • Primary Care Clinic/Center
  • Salem, NY
  • NPI 1982417119
  NPD
• Glens Falls Hospital Inc

  • General Acute Care Hospital
  • Glens Falls, NY
  • NPI 1871606764
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Glens Falls Hospital Inc

  • General Acute Care Hospital
  • Glens Falls, NY
  • NPI 1871606764
  Care Compare affiliation

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

{
    "created_epoch": "1189036800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773360000000",
    "number": "1144415779",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9 CAREY RD",
            "city": "QUEENSBURY",
            "state": "NY",
            "postal_code": "128047880",
            "telephone_number": "518-761-0300"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "90 SOUTH ST",
            "city": "GLENS FALLS",
            "state": "NY",
            "postal_code": "128014328",
            "telephone_number": "518-792-7841",
            "fax_number": "518-932-0289"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3767 Main Street",
            "address_purpose": "LOCATION",
            "city": "Warrensburg",
            "state": "NY",
            "postal_code": "128851890",
            "country_code": "US",
            "telephone_number": "518-623-2844",
            "fax_number": "518-623-3416",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LEONARD",
        "first_name": "CASSIE",
        "middle_name": "ELAINE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-09-06",
        "last_updated": "2026-03-13",
        "certification_date": "2026-03-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "NY",
            "license": "293306",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "05212506",
            "state": "NY"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cassie.leonard.1@1823.direct.athenahealth.com",
            "affiliation": "N",
            "address_1": "90 South St",
            "city": "Glens Falls",
            "state": "NY",
            "country_code": "US",
            "postal_code": "128014328",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cassie.leonard.1@1823.direct.athenahealth.com",
            "affiliation": "N",
            "address_1": "3767 Main Street",
            "city": "Warrensburg",
            "state": "NY",
            "country_code": "US",
            "postal_code": "128851890",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Thomas Lee, DMD
• Woong Lee, MD
• Melissa P. Lehrbach, M.A., MHC
• Rachel Lemos
• Michael William Lenihan, M.D.
• Roger F Levac, M.D.
• Jason Lewis, RN
• Jennifer Lynn Lewis, LMT
• Bo Li, MD
• Liberty House Foundation, Inc.

• Obstetrics & Gynecology Physician in Glens Falls, NY
• Providers in Glens Falls, NY by specialty
• Obstetrics & Gynecology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 13, 2026; 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.