Alexander Tiemeier, D.O.

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

334553 Issued in NY

Practice address

462 Grider St
Buffalo, NY 14215-3021

Phone

(716) 898-4226

NPI assigned

Apr 4, 2017

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

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

Cardiovascular Disease (Cardiology)

Education

Lake Erie College of Osteopathic Medicine, Bradenton, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Trinity Medical Wny PCGroup PAC ID 5193907517, 207 clinicians

Sisters of Charity Hospital of Buffalo New YorkGroup PAC ID 6204749153, 160 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Sisters of Charity Hospital Hospital, Buffalo, NY, CCN 330078
• Mercy Hospital of Buffalo Hospital, Buffalo, NY, CCN 330279

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: atiemeier413117@direct.chsbuffalo.org

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.

• Sisters of Charity Hospital of Buffalo New York

  • General Acute Care Hospital
  • Buffalo, NY
  • NPI 1790727543
  Medicare reassignment Care Compare group NPD
• Trinity Medical Wny PC

  • Internal Medicine Physician
  • Buffalo, NY
  • NPI 1295043149

  Cardiovascular Disease

  Medicare reassignment Care Compare group NPD
• Kenmore Mercy Hospital

  • General Acute Care Hospital
  • Kenmore, NY
  • NPI 1770598104
  Medicare reassignment NPD
• Mercy Hospital of Buffalo

  • General Acute Care Hospital
  • Buffalo, NY
  • NPI 1164464921
  Medicare reassignment NPD
• Mount St. Mary'S Hospital of Niagara Falls

  • General Acute Care Hospital
  • Lewiston, NY
  • NPI 1043394745
  Medicare reassignment NPD
• Kenmore Mercy Hospital

  • Rehabilitation Hospital Unit
  • Kenmore, NY
  • NPI 1164436283
  NPD
• Kenmore Mercy Hospital

  • Pulmonary Disease Physician
  • Kenmore, NY
  • NPI 1659909752
  NPD
• Sisters of Charity Hospital of Buffalo New York

  • General Acute Care Hospital
  • Cheektowaga, NY
  • NPI 1043455199
  NPD
• Sisters of Charity Hospital of Buffalo, New York

  • Obstetrics & Gynecology Physician
  • Buffalo, NY
  • NPI 1659396380
  NPD
• Trinity Medical Wny PC

  • Orthopaedic Surgery Physician
  • Williamsville, NY
  • NPI 1144878893
  NPD
• Trinity Medical Wny PC

  • Vascular Surgery Physician
  • Buffalo, NY
  • NPI 1205468055
  NPD

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

• Mercy Hospital of Buffalo

  • General Acute Care Hospital
  • Buffalo, NY
  • NPI 1164464921
  Care Compare affiliation
• Sisters of Charity Hospital of Buffalo New York

  • General Acute Care Hospital
  • Cheektowaga, NY
  • NPI 1043455199
  Care Compare affiliation
• Sisters of Charity Hospital of Buffalo New York

  • General Acute Care Hospital
  • Buffalo, NY
  • NPI 1790727543
  Care Compare affiliation

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

{
    "created_epoch": "1491264000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755648000000",
    "number": "1932632213",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1414 TREE SPLIT LN",
            "city": "NEPTUNE BEACH",
            "state": "FL",
            "postal_code": "322663637",
            "telephone_number": "904-910-3073"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "462 GRIDER ST",
            "city": "BUFFALO",
            "state": "NY",
            "postal_code": "142153021",
            "telephone_number": "716-898-4226"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TIEMEIER",
        "first_name": "ALEXANDER",
        "name_prefix": "Dr.",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-04-04",
        "last_updated": "2025-08-20",
        "certification_date": "2025-08-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Clinical Cardiac Electrophysiology",
            "state": "NY",
            "license": "334553",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "NY",
            "license": "334553",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Marie Ticen, MSPT
• Robert Carl Tick, MD
• Catherine Tidd
• Monique Sherri Tidwell, NON-EMERGENCY TRANSP
• Caitlyn Mae Tiedemann, DNP
• Amanda Tierney, NP
• Erika Tierney
• Liana R Tierney, DNP, RN, CPNP-PC
• Linda Tiffany, NP
• Sheila M Tighe, NP

• Cardiovascular Disease Physician in Buffalo, NY
• Providers in Buffalo, NY by specialty
• Cardiovascular Disease Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 20, 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.