⚠️

Risk scores are statistical indicators based on prescribing patterns compared to specialty peers. They are NOT allegations of fraud, misconduct, or improper care. Many legitimate medical reasons can explain outlier prescribing.

Read our methodology →

Nancy Marrero VieraMD

General Practice · Hatillo, PR 659

NPI: 1134370091

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15

🟡 Moderate

ML Fraud Detection Score: 90%

Machine learning model identifies prescribing patterns consistent with confirmed fraud cases. This is a statistical indicator, not an accusation.

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Risk Flags

Opioid + benzodiazepine co-prescriberExtreme fills per patient

Risk indicators are statistical patterns, not allegations. Learn more

12,435

Total Claims

$795K

Drug Cost

382

Beneficiaries

$2,082

Cost/Patient

Risk Score Breakdown 15/100

Low (0)Moderate (15)Elevated (30)High (50+)
Opioid + benzodiazepine combo+8
High fills per patient+5

Score components are additive. Read full methodology

Peer Comparison vs. 7,389 General Practice providers

-44%

Opioid rate vs peers

1.4% vs 2.5% avg

+85%

Cost per patient vs peers

$2,082 vs $1,128 avg

+73%

Brand preference vs peers

14.6% vs 8.4% avg

⚠️ Opioid + Benzodiazepine Co-Prescriber

This provider prescribes both opioids and benzodiazepines. The FDA has issued a Black Box Warning about the life-threatening risks of concurrent use.

🔎 Data Overview

🤖

ML fraud detection score of 90% indicates prescribing patterns with significant similarity to confirmed fraud cases. 18 out of 20 decision trees flagged this provider.

⚠️

This provider co-prescribes opioids and benzodiazepines — a combination carrying an FDA Black Box Warning due to increased risk of respiratory depression and death. While sometimes clinically necessary, this combination requires careful justification.

Insights generated from CMS data analysis. Statistical patterns are not accusations — always consider clinical context.

Opioid Prescribing

1.4%

Opioid Rate

171

Opioid Claims

$1,017

Opioid Cost

Long-Acting Rate

Brand vs Generic

85% generic

Brand: 1,777 claims · $653K

Generic: 10,434 claims · $137K

Top Prescribed Drugs

Drug (Generic)ClaimsCost
Insulin Glargine,hum.Rec.Anlog188$91K
Dapagliflozin Propanediol43$51K
Dapaglifloz Propaned/Metformin26$40K
Sitagliptin Phos/Metformin Hcl26$33K
Sitagliptin Phos/Metformin Hcl21$33K
Levothyroxine Sodium392$31K
Insulin Lispro69$30K
Sitagliptin Phosphate17$28K
Apixaban32$25K
Empagliflozin21$23K
Insulin Nph Human Isophane58$20K
Tiotropium Br/Olodaterol Hcl36$17K
Rivaroxaban20$17K
Fluticasone/Umeclidin/Vilanter24$15K
Fluticasone Propionate48$13K

Prescribing Profile

150

Unique Drugs

$143K

IRA Negotiated Drugs

15.0

Anomaly Score

Patient Profile

70

Avg Age

58%

Female

2.05

Avg Risk Score

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Data from CMS Medicare Part D Prescriber Public Use File, 2023. Risk scores are statistical indicators, not allegations of wrongdoing.Methodology · About · Dispute this data