Michael Isaac, M.D.
NPI 1558398222 · Cardiovascular Disease Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Isaac, M.D. is a Cardiovascular Disease Physician provider in Dallas, TX (NPI 1558398222).
Provider details
- NPI number
- 1558398222
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- J4233 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
11,245 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 2,283 | $122 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 781 | $13 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 731 | $8 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 676 | $16 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 647 | $176 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 561 | 171 |
| Metoprolol Succinate | 503 | 156 |
| Apixabanbrand: Eliquis | 398 | 102 |
| Losartan Potassium | 341 | 103 |
| Atorvastatin Calcium | 338 | 94 |
| Amlodipine Besylate | 318 | 104 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,163 across 55 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-27
- Last updated
- 2012-08-28
Frequently asked questions
- What is Michael Isaac's NPI number?
- Michael Isaac's National Provider Identifier (NPI) is 1558398222, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Isaac's specialty?
- Michael Isaac is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Isaac located?
- Michael Isaac's practice location on file with NPPES is 7777 Forest Ln, Dallas, TX 75230-2571.
- What is Michael Isaac's phone number?
- The practice phone number listed in the NPPES registry for Michael Isaac is (972) 566-8855.
- Does Michael Isaac accept Medicare?
- Michael Isaac is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Isaac's NPI active?
- Yes — Michael Isaac's NPI (1558398222) is active in the NPPES registry as of the last update on 2012-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.