Federico Maestre Grau, MD
NPI 1679561047 · Ophthalmology Physician · San Juan, PR
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Federico Maestre Grau, MD is a Ophthalmology Physician provider in San Juan, PR (NPI 1679561047).
Provider details
- NPI number
- 1679561047
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 9085 (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
556 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 Problem Focused Exam of Visual System92012 | 422 | $88 |
| New Patient Complete Exam of Visual System92004 | 58 | $146 |
| Imaging of Optic Nerve92133 | 44 | $36 |
| Imaging of Retina92134 | 32 | $39 |
Typical Medicare-allowed amounts for these services range $36–$146 (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 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 1,144 | 304 |
| Timolol Maleate | 803 | 169 |
| Latanoprost | 412 | 91 |
| Bimatoprostbrand: Lumigan | 250 | 59 |
| Prednisolone Acetate | 240 | 120 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 227 | 170 |
| Ketorolac Tromethamine | 177 | 130 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$98 across 3 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
- 2005-10-11
- Last updated
- 2011-08-08
Frequently asked questions
- What is Federico Maestre Grau's NPI number?
- Federico Maestre Grau's National Provider Identifier (NPI) is 1679561047, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Federico Maestre Grau's specialty?
- Federico Maestre Grau is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Federico Maestre Grau located?
- Federico Maestre Grau's practice location on file with NPPES is 357 Ave De La Constitucion, San Juan, PR 00901-2208.
- What is Federico Maestre Grau's phone number?
- The practice phone number listed in the NPPES registry for Federico Maestre Grau is (787) 289-6600.
- Does Federico Maestre Grau accept Medicare?
- Federico Maestre Grau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Federico Maestre Grau's NPI active?
- Yes — Federico Maestre Grau's NPI (1679561047) is active in the NPPES registry as of the last update on 2011-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.