JAMES K. O'NEILL M.D. – NPI #1770878670
Internal Medicine
An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.
JAMES O'NEILL is a physician located in HOUSTON, TX. NPPES has assigned the NPI number 1770878670 to JAMES O'NEILL on June 20, 2011. It is a Type-1 NPI, indicating this NPI number is associated with an individual. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207RI0011X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Interventional Cardiology
The NPI profile was last updated on Aug 12, 2025. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for JAMES O'NEILL below.
NPI Profile for
JAMES K. O'NEILL
(about 15 years ago)
HOUSTON, TX 77024-2553 Phone: (713) 465-3535 Fax: (713) 465-9735
1 Other location(s):
Houston, TX 77030-2604
Phone: (832) 355-6676
STE 630
HOUSTON, TX 77024-2553 Phone: (832) 355-6676 Fax:
Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.
A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.
| Taxonomy Classification / Specialization | State | License |
|---|---|---|
| 207RI0011X - Internal Medicine / Interventional Cardiology (Primary) |
TX | Q3933 |
| 207RC0000X - Internal Medicine / Cardiovascular Disease |
TX | Q3933 |
| 207R00000X - Internal Medicine |
TX | Q3933 |
The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.
Additional Information
- Refer to Part B
- Order Durable Medical Equipment
- Refer to Home Health Agency
- Order Power Mobility Devices
JAMES O'NEILL is affiliated with the following medical group(s):
- HOSPITAL
- MEMORIAL HERMANN KATY HOSPITAL23900 KATY FREEWAY
KATY, TX 77494 - MEMORIAL HERMANN MEMORIAL CITY HOSPITAL921 GESSNER
HOUSTON, TX 77024
- MEMORIAL HERMANN KATY HOSPITAL23900 KATY FREEWAY
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