Luis Mercado, MD
NPI 1144227869 · Internal Medicine Physician · San German, PR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Luis Mercado, MD is a Internal Medicine Physician provider in San German, PR (NPI 1144227869).
Provider details
- NPI number
- 1144227869
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 11063 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
19 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 19 | $83 |
Typical Medicare-allowed amounts for these services range $83–$83 (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 · 119 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 515 | 87 |
| Losartan Potassium | 320 | 85 |
| Gabapentin | 258 | 77 |
| Alendronate Sodium | 252 | 89 |
| Metformin Hcl | 225 | 60 |
| Famotidine | 220 | 71 |
| Atorvastatin Calcium | 204 | 76 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-07
- Last updated
- 2026-04-24
- Certified
- 2026-04-24
Frequently asked questions
- What is Luis Mercado's NPI number?
- Luis Mercado's National Provider Identifier (NPI) is 1144227869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Luis Mercado's specialty?
- Luis Mercado is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Luis Mercado located?
- Luis Mercado's practice location on file with NPPES is Ave. Interamericana #153, San German, PR 00683.
- What is Luis Mercado's phone number?
- The practice phone number listed in the NPPES registry for Luis Mercado is (787) 892-4357.
- Does Luis Mercado accept Medicare?
- Luis Mercado is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Luis Mercado's NPI active?
- Yes — Luis Mercado's NPI (1144227869) is active in the NPPES registry as of the last update on 2026-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.