Herminio Frontera, M.D.
NPI 1528126505 · Geriatric Medicine (Internal Medicine) Physician · San Juan, PR
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Herminio Frontera, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in San Juan, PR (NPI 1528126505).
Provider details
- NPI number
- 1528126505
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5893 (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
19 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
188 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 | 138 | $90 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 50 | $126 |
Typical Medicare-allowed amounts for these services range $90–$126 (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 · 60 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 208 | 69 |
| Metoprolol Succinate | 147 | 47 |
| Atorvastatin Calcium | 140 | 49 |
| Levothyroxine Sodium | 138 | 37 |
| Rosuvastatin Calcium | 130 | 44 |
| Metformin Hcl | 130 | 40 |
| Amlodipine Besylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-04
- Last updated
- 2021-08-03
- Certified
- 2021-08-03
Frequently asked questions
- What is Herminio Frontera's NPI number?
- Herminio Frontera's National Provider Identifier (NPI) is 1528126505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Herminio Frontera's specialty?
- Herminio Frontera is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Herminio Frontera located?
- Herminio Frontera's practice location on file with NPPES is 735 Ave Ponce De Leon Ste 814, San Juan, PR 00917-5031.
- What is Herminio Frontera's phone number?
- The practice phone number listed in the NPPES registry for Herminio Frontera is (787) 764-4110.
- Does Herminio Frontera accept Medicare?
- Herminio Frontera is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Herminio Frontera's NPI active?
- Yes — Herminio Frontera's NPI (1528126505) is active in the NPPES registry as of the last update on 2021-08-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.