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

John Charles Isaac, MD

Individual provider Interventional Cardiology Physician · NPI 1295799005

John Charles Isaac, MD is a Cardiovascular Disease (Cardiology) in Houston, Texas. Graduated from University of Texas Southwestern Medical School at Dallas in 1994, 32 years ago. Practices with Houston Cardiovascular Assoc PA, a 82-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
32
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
TX
In the registry since
2006
Specialties on file
2
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

6560 Fannin St Ste 620
Houston, TX 77030-2761
Phone: (713) 791-1978
Fax: (713) 791-1870
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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 K4090 (TX)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence K4090 (TX)

Record details

NPI number1295799005
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 17, 2006
Last updated in NPPESOctober 25, 2016
Mailing address6560 Fannin St, Ste 620, Houston, TX 77030-2761

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 1994 (32 years in practice)
Group practice Houston Cardiovascular Assoc Pa — 82 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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