DR. FEDERICO A MAESTRE GRAU MD
NPI 1679561047
Ophthalmology in San Juan, PR

Q: What is Federico Maestre Grau's NPI number?

The NPI number for Federico Maestre Grau is 1679561047. It was assigned to this individual provider in the NPPES registry on October 11, 2005. The provider is also known as Dr. Federico A Maestre Grau MD.

Q: What is Federico Maestre Grau's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Active since October 11, 2005PECOS EnrolledAccepts Medicare Assignment

357 AVE DE LA CONSTITUCION, PUERTA DE TIERRA, SAN JUAN, PR 00901(787) 289-6600(787) 289-6622 Get Directions Write a Review

NPPES record last updated: August 8, 2011. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Federico A Maestre Grau Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. FEDERICO A MAESTRE GRAU MD (NPI 1679561047) is an individual ophthalmology provider in San Juan, Puerto Rico, licensed in Puerto Rico (9085) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS and is a graduate of Ponce School Of Medicine (1986).

NPPES Registry Identity

NPI1679561047

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameDR. FEDERICO A MAESTRE GRAUCredential: MD

Location Address357 AVE DE LA CONSTITUCION, PUERTA DE TIERRASan Juan, PR 00901-2208

Mailing AddressPo Box 13953San Juan, PR 00908-3953 · (787) 289-6600 · Fax (787) 289-6622

Phone(787) 289-6600

Fax(787) 289-6622

Sole ProprietorYes

Medical School CMSPonce School Of MedicineGraduated 1986

Enumeration DateOctober 11, 2005

Last NPPES UpdateAugust 8, 2011

✔ NPI 1679561047 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in PR · 9085

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

357 AVE DE LA CONSTITUCION, San Juan, PR 00901

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Other Names 1

Professional Name (2)Dr. Federico A Maestre Grau Md

Other Identifiers 2

Medicare ID-Type Unspecified83250PR

Medicare UPIN1216PR

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Federico A Maestre Grau Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7416126255

PECOS Enrollment IDI20110811000407

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Federico Maestre Grau reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Eye Care Of San Juan P S C

Same address

Ophthalmology

357 AVE DE LA CONSTITUCION, PUERTA DE TIERRA
San Juan, PR 00901

Reassigned Medicare billing, Puerto Rico enrollment
2 clinicians in this Medicare group

NPI 1659689875 (787) 289-6600

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

422 services211 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

58 services58 patients

Imaging of optic nerve 92133

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

44 services35 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

32 services32 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 00901 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$130.65 typical visit price

range $56.86 – $172.44

Typical copayment $32.66 (range $14.21 – $43.11)

Most-billed visit code 99204

Established Patient

$70.88 typical visit price

range $18.24 – $140.44

Typical copayment $17.72 (range $4.56 – $35.11)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JOSE J DE LA CRUZ-NAPOLI M.D.

Ophthalmology (Cornea and External Diseases Specialist)

357 AVE DE LA CONSTITUCION
SAN JUAN, PR 00901

San Juan Municipio (787) 289-6600

EYE CARE OF SAN JUAN P S C

Ophthalmology

357 AVE DE LA CONSTITUCION, PUERTA DE TIERRA
SAN JUAN, PR 00901

San Juan Municipio (787) 289-6600

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Federico Maestre Grau's NPI number?

The NPI number for Federico Maestre Grau is 1679561047. It was assigned to this individual provider in the NPPES registry on October 11, 2005. The provider is also known as Dr. Federico A Maestre Grau MD.

Where is Federico Maestre Grau located?

Federico Maestre Grau practices at 357 Ave De La Constitucion Puerta De Tierra, San Juan, PR 00901. The listed phone number is (787) 289-6600.

What is Federico Maestre Grau's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Is Federico Maestre Grau enrolled in Medicare?

Yes. Federico Maestre Grau is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Federico Maestre Grau's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Federico Maestre Grau reassigns Medicare benefits to Eye Care Of San Juan P S C (San Juan, PR). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Federico Maestre Grau's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Federico Maestre Grau was last updated on August 8, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.