Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Alexander Tiemeier, DO

Individual provider Clinical Cardiac Electrophysiology Physician · NPI 1932632213

Dr. Alexander Tiemeier, DO is registered under Cardiovascular Disease (Cardiology) in Buffalo, New York. Graduated from Lake Erie College of Osteopathic Medicine, Bradenton in 2017, 9 years ago. Practices with Trinity Medical Wny PC, a 201-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
9
Trained at
Lake Erie College of Osteopathic Medicine, Bradenton
Licensed in
NY
In the registry since
2017
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

462 Grider St
Buffalo, NY 14215-3021
Phone: (716) 898-4226
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 334553 (NY)
Clinical Cardiac Electrophysiology Physician Taxonomy 207RC0001X · Licence 334553 (NY)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1932632213
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 4, 2017
Last updated in NPPESAugust 20, 2025
Certification dateAugust 20, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, BRADENTON
Graduated 2017 (9 years in practice)
Group practice Trinity Medical Wny Pc — 201 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Pacemaker insertion or repair 25 times · 75th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Travel and Lodging $1,793 6 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $690 13 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Trinity Medical Wny PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 201 clinicians in the practice; 12 are shown here.

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