Jeffrey Lesser, DO

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

340551 Issued in NY

Practice address

100 High St
Buffalo, NY 14203-1126

Phone

(716) 859-5600

NPI assigned

Mar 20, 2023

Sex

Male

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 TX

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 Osteopathy

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: jeffrey.lesser@hca9.eclinicaldirectplus.com

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.

• Signify Health Medical Associates, PLLC

  • General Practice Physician
  • Dallas, TX
  • NPI 1750845863
  Medicare reassignment NPD
• General Physician, PC

  • Internal Medicine Physician
  • Orchard Park, NY
  • NPI 1063236529
  NPD (past)

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

{
    "created_epoch": "1679270400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785196800000",
    "number": "1023710522",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "726 EXCHANGE ST STE 710",
            "city": "BUFFALO",
            "state": "NY",
            "postal_code": "142101464",
            "telephone_number": "716-852-4772"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 HIGH ST",
            "city": "BUFFALO",
            "state": "NY",
            "postal_code": "142031126",
            "telephone_number": "716-859-5600"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1540 Maple Rd",
            "address_purpose": "LOCATION",
            "city": "Williamsville",
            "state": "NY",
            "postal_code": "142213647",
            "country_code": "US",
            "telephone_number": "716-568-3600",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LESSER",
        "first_name": "JEFFREY",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-03-20",
        "last_updated": "2026-07-28",
        "certification_date": "2026-07-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "V4141",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "340551",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Bailey Lesniak, PHARMD
• Dennis Michael Lesniak, D.C.
• Ian T Lesniak, PA-C
• Alan Joseph Lesse, M.D.
• Christie L Lesser, LCSWR
• Joel David Lesses, MS
• Morgan Lee Lester
• Paula Leszak, NP
• Silas Diane Lethbridge
• Leisha Lett

• Internal Medicine Physician in Buffalo, NY
• Providers in Buffalo, NY by specialty
• Internal Medicine Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 28, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.