Guillermo Reyes, M.D.
NPI 1164544656 · Cardiovascular Disease Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guillermo Reyes, M.D. is a Cardiovascular Disease Physician provider in San Antonio, TX (NPI 1164544656).
Provider details
- NPI number
- 1164544656
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- J01563 (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
19 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
3,981 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 1,063 | $14 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 826 | $171 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 222 | $170 |
| Heart Muscle Strain Imaging93356 | 221 | $35 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 186 | $122 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 349 | 112 |
| Atorvastatin Calcium | 259 | 84 |
| Lisinopril | 184 | 53 |
| Nifedipinebrand: Nifedipine Er | 173 | 51 |
| Metoprolol Succinate | 160 | 55 |
| Amlodipine Besylate | 156 | 53 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,106 across 117 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
- 2007-04-04
- Last updated
- 2014-03-13
Frequently asked questions
- What is Guillermo Reyes's NPI number?
- Guillermo Reyes's National Provider Identifier (NPI) is 1164544656, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Reyes's specialty?
- Guillermo Reyes is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Reyes located?
- Guillermo Reyes's practice location on file with NPPES is 8093 Eckhert Rd, San Antonio, TX 78240-2637.
- What is Guillermo Reyes's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Reyes is (210) 949-1300.
- Does Guillermo Reyes accept Medicare?
- Guillermo Reyes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guillermo Reyes's NPI active?
- Yes — Guillermo Reyes's NPI (1164544656) is active in the NPPES registry as of the last update on 2014-03-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.