Ericka Rivera Castro, MD
Psychiatry 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 53,104 in Psychiatry 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.
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Ericka Rivera Castro, MD filed 5,533 Medicare Part D claims in 2023 as a Psychiatry Physician in San Juan, Puerto Rico, prescribing >99% generic.
- 6K
- Part D claims, 2023
- >99%
- generic prescribing
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.
Ericka Rivera Castro, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
5,533 Top 5% higher than 95% 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
Ericka 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 Ericka Rivera Castro, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Puerto Rico
How Psychiatry Physician compares to other specialties among Puerto Rico providers
Largest specialties in Puerto Rico (% of in-state providers)
Psychiatry Physician ranks #24 among Puerto Rico's specialties (1% of in-state providers)
Each bar is a specialty's share of the Puerto Rico provider total, by primary NUCC taxonomy. The highlighted bar is Psychiatry Physician; the long tail of smaller specialties is omitted for legibility.
Specialty board-certification context
Estimated specialty board-certified rate — Psychiatry Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Psychiatry Physician ABMS/AOA estimate
Est. board-certified rate (Psychiatry Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Psychiatry Physician US NPIs
Specialty board-certified rate — Psychiatry Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
Ericka Rivera Castro, MD appears in the CMS NPPES registry as a Psychiatry Physician provider holding MD credentials at 826 AVE MOLUCAS, San Juan, PR, 00924, with a listed phone of (787) 769-1571. NPI 1003829789 was issued on 08/14/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Rivera Castro most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.
Medicare Part D records for calendar year 2023 show 5,533 prescription claims written by this provider, covering 244 Medicare beneficiaries and totaling roughly $106K in drug spend, split <1% brand-name and >99% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.
Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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 | 1003829789 |
|---|---|
| Specialty | Psychiatry Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 08/14/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Ericka Rivera Castro, MD's current license status, disciplinary history, and board certifications directly with the licensing state's medical board before relying on this page for a clinical or care decision.
How we sourced this profile
Brand vs generic prescribing mix · Generic-heavy
<1% brand-name claims vs >99% generic, on 5,533 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
Prescribing Breakdown
- 30-Day Fills
- 5,777
- Total Day Supply
- 171,961
- Brand vs Generic
- <1% brand / >99% generic
- Brand Drug Cost
- $24K
- Generic Drug Cost
- $81K
Patient Demographics
- Average Patient Age
- 66.4 years
- Avg HCC Risk Score
- 1.80
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 103, 65-74: 82, 75-84: 43, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ericka Rivera Castro, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Clonazepam
Clonazepam
1,030 claims
- Temazepam
Temazepam
525 claims
- Venlafaxine Hcl Er
Venlafaxine Hcl Er
471 claims
- Risperidone 380
Risperidone
380 claims
- Quetiapine Fumarate 304
Quetiapine Fumarate
304 claims
- Estazolam 292
Estazolam
292 claims
- Buspirone Hcl 252
Buspirone Hcl
252 claims
- Sertraline Hcl 243
Sertraline Hcl
243 claims
| Drug | Claims |
|---|---|
| Clonazepam | 1,030 |
| Temazepam | 525 |
| Venlafaxine Hcl Er Venlafaxine Hcl | 471 |
| Risperidone | 380 |
| Quetiapine Fumarate | 304 |
| Estazolam | 292 |
| Buspirone Hcl | 252 |
| Sertraline Hcl | 243 |
| Bupropion Hcl Sr Bupropion Hcl | 237 |
| Divalproex Sodium | 186 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Psychiatry Physician Overview
How Ericka Rivera Castro, MD fits within the Psychiatry Physician landscape nationally.
Ericka Rivera Castro, MD's 5,533 claims are above the specialty average of 1,038.
Nearby Psychiatry 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.
Compare Psychiatry 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 Psychiatry 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.
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Frequently Asked Questions
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Data Sources
- 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