Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

James Kennedy O'Neill, MD

Individual provider Internal Medicine Physician · NPI 1770878670

James Kennedy O'Neill, MD practises Interventional Cardiology in Houston, Texas. Graduated from Baylor College of Medicine in 2011, 15 years ago. Practices with Memorial Hermann Medical Group, a 753-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri and Texas.

Years since qualifying
15
Trained at
Baylor College of Medicine
Licensed in
MO, TX
In the registry since
2011
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

925 Gessner Rd Ste 630
Houston, TX 77024-2553
Phone: (713) 465-3535
Fax: (713) 465-9735
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 6720 Bertner Ave # Mc1-133, Houston, TX 77030-2604 — (832) 355-6676

Specialties & licences

Interventional Cardiology Physician (primary) Taxonomy 207RI0011X · Licence Q3933 (TX)
Internal Medicine Physician Taxonomy 207R00000X · Licence 2011016934 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence Q3933 (TX)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence Q3933 (TX)

Record details

NPI number1770878670
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 20, 2011
Last updated in NPPESAugust 12, 2025
Certification dateAugust 12, 2025

Medicare enrollment

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

Medicare specialtyINTERVENTIONAL CARDIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolBAYLOR COLLEGE OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Memorial Hermann Medical Group — 753 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 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 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 patients884
Services billed 3,306 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 $3,517 84 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.

Colleagues at Memorial Hermann Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 753 clinicians in the practice; 12 are shown here.

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