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ANDREA LIZ ASTOR NIEVES
NPI 1518653476
Dentist - General Practice in San Juan, PR

Active since April 13, 2023PECOS Enrolled
551 AVE. ESCORIAL URB. CAPARRA HEIGHTS, SAN JUAN, PR 00926(787) 782-0403 Get Directions Write a Review

NPPES record last updated: July 25, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Andrea Liz Astor Nieves NPPES

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

ANDREA LIZ ASTOR NIEVES (NPI 1518653476) is an individual general practice provider in San Juan, Puerto Rico, licensed in Puerto Rico (3544) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1518653476
Entity TypeIndividualFemale
Primary Taxonomy1223G0001X
Provider Legal NameANDREA LIZ ASTOR NIEVES
Location Address551 AVE. ESCORIAL URB. CAPARRA HEIGHTSSan Juan, PR 00926
Mailing AddressUrb. Los Arboles De Montehiedra, 393 Blvd. De Los ArbolesSan Juan, PR 00926 · (787) 782-0403
Phone(787) 782-0403
Sole ProprietorYes
Enumeration DateApril 13, 2023
Last NPPES UpdateJuly 25, 2025
NPPES CertifiedJuly 21, 2025
✔ NPI 1518653476 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in PR · 3544
Definition
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Andrea Liz Astor Nieves is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Andrea Astor Nieves reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Olaf Group LLC
Dentist
CAPARRA HEIGHTS, 551 AVE ESCORIAL
San Juan, PR 00920
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 4 clinicians in this Medicare group
NPI 1558190629 (787) 782-0403

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 00926 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
$88.07 typical visit price
range $56.86 – $172.44
Typical copayment $22.01 (range $14.21 – $43.11)
Most-billed visit code 99203
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.

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 Andrea Astor Nieves's NPI number?

The NPI number for Andrea Astor Nieves is 1518653476. It was assigned to this individual provider in the NPPES registry on April 13, 2023.

Where is Andrea Astor Nieves located?

Andrea Astor Nieves practices at 551 Ave. Escorial Urb. Caparra Heights, San Juan, PR 00926. The listed phone number is (787) 782-0403.

What is Andrea Astor Nieves's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Is Andrea Astor Nieves enrolled in Medicare?

Yes. Andrea Astor Nieves is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Andrea Astor Nieves's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrea Astor Nieves reassigns Medicare benefits to Olaf Group LLC (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 Andrea Astor Nieves'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 Andrea Astor Nieves was last updated on July 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.