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

Thomas M Ruff, DO

Individual provider Cardiovascular Disease Physician · NPI 1639178304

Thomas M Ruff, DO practises Interventional Cardiology in Dayton, Ohio. Graduated from Chicago College of Osteopathy in 1989, 37 years ago. Practices with Kettering Independent Medical Group Inc, a 700-clinician group and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
37
Trained at
Chicago College of Osteopathy
Licensed in
OH
In the registry since
2005
Specialties on file
2
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

4160 Little York Rd Ste 20
Dayton, OH 45414-5800
Phone: (937) 454-9527
Fax: (937) 454-9532
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Interventional Cardiology Physician (primary) Taxonomy 207RI0011X · Licence 34006163 (OH)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 34006163 (OH)

Record details

NPI number1639178304
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 15, 2005
Last updated in NPPESNovember 24, 2020
Certification dateNovember 24, 2020

Medicare enrollment

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

Medicare specialtyINTERVENTIONAL CARDIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolCHICAGO COLLEGE OF OSTEOPATHY
Graduated 1989 (37 years in practice)
Group practice Kettering Independent Medical Group Inc — 700 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations15 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.

Coronary angioplasty and stenting 34 times · 69th percentile
Pacemaker insertion or repair 1–10 times

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.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients641
Services billed 3,016 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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.

Food and Beverage $54 3 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. Those with a page here are linked.

  • Kettering Health Main Campus Hospital · Kettering, OH · listed as Kettering Medical Center
  • Soin Medical Center Hospital · Beaver Creek, OH · listed as Beavercreek Medical Center
  • Kettering Health Dayton Hospital · Dayton, OH
  • Kettering Health Miamisburg Hospital · Miamisburg, OH
  • Kettering Health Troy Hospital · Troy, OH

Colleagues at Kettering Independent Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 700 clinicians in the practice; 12 are shown here.

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