Denis Ruiz-Serrano, MD
NPI 1508835869 · Cardiovascular Disease Physician · Guaynabo, PR
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Denis Ruiz-Serrano, MD is a Cardiovascular Disease Physician provider in Guaynabo, PR (NPI 1508835869).
Provider details
- NPI number
- 1508835869
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 13198 (PR)
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
116 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 42 | $90 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 39 | $14 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 23 | $194 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 12 | $110 |
Typical Medicare-allowed amounts for these services range $14–$194 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 68 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 3,604 | 1,218 |
| Amlodipine Besylate | 2,171 | 739 |
| Losartan Potassium | 2,105 | 673 |
| Metoprolol Succinate | 1,960 | 618 |
| Ezetimibe | 1,551 | 523 |
| Hydrochlorothiazide | 1,331 | 447 |
| Rosuvastatin Calcium | 1,324 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,005 across 56 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
- 2006-03-17
- Last updated
- 2011-10-14
Frequently asked questions
- What is Denis Ruiz-Serrano's NPI number?
- Denis Ruiz-Serrano's National Provider Identifier (NPI) is 1508835869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Denis Ruiz-Serrano's specialty?
- Denis Ruiz-Serrano is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Denis Ruiz-Serrano located?
- Denis Ruiz-Serrano's practice location on file with NPPES is 107 Gonzalez Giusti Ave, Guaynabo, PR 00969.
- What is Denis Ruiz-Serrano's phone number?
- The practice phone number listed in the NPPES registry for Denis Ruiz-Serrano is (787) 782-6334.
- Does Denis Ruiz-Serrano accept Medicare?
- Denis Ruiz-Serrano is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Denis Ruiz-Serrano's NPI active?
- Yes — Denis Ruiz-Serrano's NPI (1508835869) is active in the NPPES registry as of the last update on 2011-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.