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GRACIELA DEL C RIVERA CASTRO MD
NPI 1033666813
Obstetrics & Gynecology in San Juan, PR

Active since September 08, 2016PECOS EnrolledAccepts Medicare Assignment
29 WASHINGTON STREET, ASHFORD MEDICAL CENTER 208-A, SAN JUAN, PR 00907(787) 722-1104 Get Directions Write a Review

NPPES record last updated: August 26, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 26, 2022, Oct 19, 2016 (2 updates tracked since 2016).

About Graciela Del C Rivera Castro Md NPPES

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

GRACIELA DEL C RIVERA CASTRO MD (NPI 1033666813) is an individual obstetrics & gynecology provider in San Juan, Puerto Rico, licensed in Puerto Rico (22924) and active in the NPI registry since September 2016. She is enrolled in Medicare PECOS, maintains a secondary practice location in Carolina, and is a graduate of University Of Puerto Rico School Of Medicine (2018).

NPPES Registry Identity

NPI1033666813
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameGRACIELA DEL C RIVERA CASTROCredential: MD
Location Address29 WASHINGTON STREET, ASHFORD MEDICAL CENTER 208-ASan Juan, PR 00907
Mailing Address29 Washington Street, Ashford Medical Center 208-aSan Juan, PR 00907 · (787) 722-1104
Phone(787) 722-1104
Sole ProprietorNo
Medical School CMSUniversity Of Puerto Rico School Of MedicineGraduated 2018
Enumeration DateSeptember 8, 2016
Last NPPES UpdateAugust 26, 20222 updates tracked since enumeration
NPPES CertifiedAugust 1, 2022
✔ NPI 1033666813 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in PR · 22924
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedObstetrics & Gynecology · GynecologyTaxonomy 207VG0400X · License 22924 (PR)
Also ListedObstetrics & Gynecology · ObstetricsTaxonomy 207VX0000X · License 22924 (PR)

Secondary Practice Location 1

Location 1Carretera 3 km 8.3, HOSPITAL FEDERICO TRILLACAROLINA, PR 00984 · Phone (787) 757-1800

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

Graciela Del C Rivera Castro 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 ID1052787066
PECOS Enrollment IDI20221017001543
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 Reassignments

2

Medicare enrollment records show Graciela Rivera Castro reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Castaner & Pou LLC
Obstetrics & Gynecology
29 CALLE WASHINGTON STE 206, ASHFORD MEDICAL CENTER
San Juan, PR 00907
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 3 clinicians in this Medicare group
NPI 1215481007 (787) 722-1104
Recinto De Ciencias Medicas
Obstetrics & Gynecology
CENTRO COMERCIAL REPARTO METROPOLITANO SUITE 211, AVE. AMERICO MIRANDA
Rio Piedras, PR 00921
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 31 clinicians in this Medicare group
NPI 1689752461 (787) 758-7910

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 00907 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 8

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

SAN JUAN OPHTHALMOLOGY GROUP CSP
Ophthalmology
29 WASHINGTON STREET, SUITE 707
SAN JUAN, PR 00907
San Juan Municipio (787) 723-4670
YAIZA MARTINEZ-ORTIZ MD
Internal Medicine (Gastroenterology)
29 WASHINGTON STREET, ASHFORD MEDICAL CENTER STE 601-602
SAN JUAN, PR 00907
San Juan Municipio (787) 249-9560
ANGEL MIGUEL RODRIGUEZ RIVERA M.D,
Surgery (Surgical Oncology)
29 WASHINGTON STREET, STE 601-602 ASHFORD MEDICAL CTR
SAN JUAN, PR 00907
San Juan Municipio (787) 249-9560
AVANTSURGICAL PR PSC
Surgery
29 WASHINGTON STREET, ASHFORD MEDICAL CENTER SUITE 505
SAN JUAN, PR 00907
San Juan Municipio (787) 721-2243
COMPREHENSIVE CANCER SPECIALISTS
Surgery (Surgical Oncology)
29 WASHINGTON STREET, STE 601-602 ASHFORD MEDICAL CTR
SAN JUAN, PR 00907
San Juan Municipio (787) 249-9560
DR. JUAN CASTANER M.D.
Obstetrics & Gynecology (Maternal & Fetal Medicine)
29 WASHINGTON STREET, SUITE 207 ASHFORD MEDICAL CENTER
SAN JUAN, PR 00907
San Juan Municipio (787) 725-6750
DIANA NOYA MANGUAL M.D.
Obstetrics & Gynecology
29 WASHINGTON STREET, ASHFORD MEDICAL CENTER SUITE 402
SAN JUAN, PR 00907
San Juan Municipio (787) 724-8441
ASHFORD ENDOCRINE & METABOLIC LABORATORY INC
Clinical Medical Laboratory
29 WASHINGTON STREET, SUITE 210
SAN JUAN, PR 00907
San Juan Municipio (787) 724-6816

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 Graciela Rivera Castro's NPI number?

The NPI number for Graciela Rivera Castro is 1033666813. It was assigned to this individual provider in the NPPES registry on September 8, 2016.

Where is Graciela Rivera Castro located?

Graciela Rivera Castro practices at 29 Washington Street Ashford Medical Center 208-A, San Juan, PR 00907. The listed phone number is (787) 722-1104.

What is Graciela Rivera Castro's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Graciela Rivera Castro enrolled in Medicare?

Yes. Graciela Rivera Castro 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 organizations bill Medicare for Graciela Rivera Castro's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Graciela Rivera Castro reassigns Medicare benefits to 2 organizations: Castaner & Pou LLC (San Juan, PR) and Recinto De Ciencias Medicas (Rio Piedras, PR). Each 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 Graciela Rivera Castro'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 Graciela Rivera Castro was last updated on August 26, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.