NPI registry status
Active
2026 NPPES data Gynecology Physician NPI 1033666813 MD
Verify on CMS → Graciela Rivera Castro, MD
Gynecology Physician in San Juan, Puerto Rico.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,906 in Gynecology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
23
Medicare Part D claims · 12 beneficiaries · Gynecology Physician avg: 295
Industry payments
$192.17
4 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Graciela Rivera Castro, MD filed 23 Medicare Part D claims in 2023 as a Gynecology Physician in San Juan, Puerto Rico.
- 23
- Part D claims, 2023
- $192.17
- industry payments (Sunshine Act)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Graciela Rivera Castro, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
23 0th percentile higher than 0% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
Graciela Rivera Castro, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Graciela Rivera Castro, MD?
Quality data not reportedPrimary specialty
Gynecology Physician
Medicare Part D claims
23 92% vs specialty avg
Specialty distribution in Puerto Rico
How Gynecology Physician compares to other specialties among Puerto Rico providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gynecology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Graciela Rivera Castro, MD appears in the CMS NPPES registry as a Gynecology Physician provider holding MD credentials at 29 WASHINGTON STREET, San Juan, PR, 00907, with a listed phone of (787) 722-1104. NPI 1033666813 was issued on 09/08/2016.
Medicare Part D records for calendar year 2023 show 23 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $901 in drug spend.
Gynecology Physician is a narrow specialty nationwide, with 3,906 enrolled providers across 53 states and an average of 295 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1033666813 |
|---|---|
| Specialty | Gynecology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 09/08/2016 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Graciela Rivera Castro, MD. Source: openpaymentsdata.cms.gov.
Total received
$192
Largest payer
Roche Diagnostics Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
23
Total Claims
$901
Total Drug Cost
12
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 27
- Total Day Supply
- 488
- Generic Drug Cost
- $259
Patient Demographics
- Average Patient Age
- 61.5 years
- Avg HCC Risk Score
- 1.28
Gynecology Physician Overview
How Graciela Rivera Castro, MD fits within the Gynecology Physician landscape nationally.
3,906
Gynecology Physician Providers in US
53
States with Gynecology Physician
295
Avg Claims per Provider
Graciela Rivera Castro, MD's 23 claims are below the specialty average of 295.
Nearby Gynecology Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Rivera Castro.
Dr. Rafael Albandoz
MD
San Juan, PR
Dr. Rafael Alonso Godinez
MD
Caquas, PR
Dr. Jose Alvarez Rivera
M.D.
San Juan, PR
Dr. Luis Arroyo Aguirrechea
M.D.
Manati, PR
Dr. Carlos Avellanet
M.D.
Bayamon, PR
Compare Gynecology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Puerto Rico medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gynecology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Puerto Rico
Frequently Asked Questions
What is Graciela Rivera Castro, MD's specialty? ▼
Graciela Rivera Castro, MD specializes in Gynecology Physician and practices in San Juan, Puerto Rico. Credentials: MD.
How much does Graciela Rivera Castro, MD prescribe under Medicare Part D? ▼
In 2023, Graciela Rivera Castro, MD wrote 23 Medicare Part D claims totaling $901 in drug costs for 12 beneficiaries.
Where is Graciela Rivera Castro, MD located? ▼
Graciela Rivera Castro, MD is located at 29 WASHINGTON STREET, San Juan, PR, 00907. Phone: (787) 722-1104.
What is Graciela Rivera Castro, MD's NPI number? ▼
Graciela Rivera Castro, MD's National Provider Identifier (NPI) is 1033666813, issued on 09/08/2016.
How many Gynecology Physician providers are there in the US? ▼
There are 3,906 Gynecology Physician providers across 53 states in the US. The average Gynecology Physician provider writes 295 Medicare Part D claims per year.
Does Graciela Rivera Castro, MD accept Medicare? ▼
Graciela Rivera Castro, MD appears in CMS Medicare data with 23 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Graciela Rivera Castro, MD's credentials? ▼
Graciela Rivera Castro, MD's NPI is 1033666813 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.