Internal Medicine, Interventional Cardiology · Houston, TX
NPI
1295799005
Since 2006
Specialty
Internal Medicine, Interventional Cardiology
Code 207RI0011X
Group practices
2
Medicare group memberships
Hospitals
3
Hospital affiliations
6560 Fannin St, Ste 620
Houston, TX, 77030
Phone (713) 791-1978
Groups this clinician bills Medicare through
Medicare paid, 2024
$1.8M
9,530 services
Medicare patients, 2024
1,253
Average age 76
Drug cost, 2024
$4.8M
18,588 prescriptions
Company payments, 2025
$214K
From 27 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by John C Isaac was code 99214 (office e&m - established), 2,140 times for 1,075 patients. In total John C Isaac billed 9,530 services in 73 codes, and Medicare paid $1.8M.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2016-10-25.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99214 Office E&M - Established | Office | 2,140 | 1,075 | $93.56 | $200K |
| J2785 Injection, regadenoson, 0.1 mg | Office | 1,752 | 437 | $5.51 | $9,654 |
| 93298 External Electrocardiographic Monitoring | Office | 863 | 124 | $77.19 | $67K |
| 93306 Echocardiography (TTE/TEE) | Office | 654 | 611 | $143.36 | $94K |
| 93880 Duplex Scan - Extracranial Arteries | Office | 550 | 550 | $143.42 | $79K |
| 93015 Electrocardiogram | Office | 518 | 516 | $54.53 | $28K |
| A9555 Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries | Office | 378 | 375 | $640.65 | $242K |
| 78431 Myocardial Perfusion Scan | Office | 375 | 375 | $1,849.38 | $694K |
| 93000 Electrocardiogram | Office | 327 | 283 | $10.45 | $3,418 |
| 93296 External Electrocardiographic Monitoring | Office | 229 | 70 | $14.88 | $3,408 |
| 93294 External Electrocardiographic Monitoring | Office | 199 | 61 | $20.40 | $4,060 |
| 99232 Hospital E&M - Subsequent | Facility | 151 | 82 | $62.47 | $9,433 |
| 78452 Myocardial Perfusion Scan | Office | 142 | 142 | $328.69 | $47K |
| A9500 Technetium tc-99m sestamibi, diagnostic, per study dose | Office | 138 | 134 | $69.54 | $9,597 |
| 99443 Telephone Services | Office | 77 | 73 | $92.93 | $7,156 |
By year: 2022 $1.9M for 9,923 services; 2023 $2.0M for 10,756 services; 2024 $1.8M for 9,530 services.
Medicare prescription drug claims, 2024
In 2024, the drug John C Isaac prescribed most often to Medicare patients was Ezetimibe, with 2,335 prescriptions and refills. In total John C Isaac wrote 18,588 Medicare prescriptions that cost $4.8M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Ezetimibe Generic | 2,335 | 6,785 | 744 | $63K |
| Rosuvastatin Calcium Generic | 1,749 | 5,098 | 552 | $23K |
| Atorvastatin Calcium Generic | 1,643 | 4,790 | 486 | $18K |
| Repatha Sureclick Evolocumab | 1,403 | 2,005 | 217 | $1.1M |
| Metoprolol Succinate Generic | 1,146 | 3,304 | 329 | $19K |
| Amlodipine Besylate Generic | 950 | 2,726 | 296 | $8,389 |
| Eliquis Apixaban | 881 | 1,983 | 228 | $1.1M |
| Clopidogrel Clopidogrel Bisulfate | 645 | 1,834 | 190 | $8,446 |
| Valsartan Generic | 406 | 1,191 | 130 | $12K |
| Furosemide Generic | 349 | 1,018 | 135 | $2,069 |
| Nebivolol Hcl Generic | 323 | 858 | 93 | $22K |
| Losartan Potassium Generic | 313 | 892 | 99 | $3,654 |
| Lisinopril Generic | 310 | 923 | 101 | $3,136 |
| Praluent Pen Alirocumab | 302 | 419 | 57 | $207K |
| Carvedilol Generic | 290 | 843 | 90 | $2,705 |
Brand drugs: - claims; generic drugs: 14,149 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid John C Isaac $214K ($214K in general payments such as food, travel and fees) from 27 companies. The largest payer was Amgen Inc. with $128K.
| Company | Payments | Amount |
|---|---|---|
| Amgen Inc. AMGN | 185 | $128K |
| Regeneron Healthcare Solutions, Inc. REGN | 38 | $21K |
| E.R. Squibb & Sons, L.L.C. BMY | 27 | $20K |
| Heartflow, Inc. HTFL | 23 | $20K |
| Lilly USA, LLC LLY | 14 | $14K |
| Medicure Pharma Inc. | 1 | $5,000 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 6 | $2,569 |
| Novartis Pharmaceuticals Corporation NVS | 13 | $1,964 |
| Impulse Dynamics (USA) Inc. | 2 | $312 |
| Abbott Laboratories ABT | 13 | $304 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.