⚠️

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 →

Karl BrennerM.D.

Internal Medicine · Ann Arbor, MI 48105

NPI: 1033186770

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15

🟡 Moderate

Risk Flags

Elevated antipsychotic prescribing (65+)Opioid + benzodiazepine co-prescriber

Risk indicators are statistical patterns, not allegations. Learn more

10,144

Total Claims

$1.0M

Drug Cost

766

Beneficiaries

$1,356

Cost/Patient

Risk Score Breakdown 15/100

Low (0)Moderate (15)Elevated (30)High (50+)
Opioid + benzodiazepine combo+8
Elderly antipsychotic prescribing+5

Score components are additive. Read full methodology

Peer Comparison vs. 110,156 Internal Medicine providers

-20%

Opioid rate vs peers

1.8% vs 2.2% avg

-4%

Cost per patient vs peers

$1,356 vs $1,411 avg

-2%

Brand preference vs peers

10.4% vs 10.6% 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

⚠️

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

1.8%

Opioid Rate

182

Opioid Claims

$3,124

Opioid Cost

6.6%

Long-Acting Rate

Brand vs Generic

90% generic

Brand: 1,048 claims · $814K

Generic: 9,002 claims · $221K

Top Prescribed Drugs

Drug (Generic)ClaimsCost
Apixaban134$168K
Rivaroxaban77$103K
Etanercept13$88K
Empagliflozin66$82K
Dulaglutide28$49K
Insulin Glargine,hum.Rec.Anlog66$41K
Semaglutide36$41K
Sitagliptin Phosphate29$36K
Tirzepatide19$22K
Budesonide/Formoterol Fumarate27$18K
Insulin Lispro16$17K
Atorvastatin Calcium719$14K
Levothyroxine Sodium442$8,007
Tamsulosin Hcl319$6,812
Losartan Potassium296$6,328

Prescribing Profile

129

Unique Drugs

$477K

IRA Negotiated Drugs

$112K

GLP-1 Drugs

15.0

Anomaly Score

Patient Profile

75

Avg Age

34%

Female

0.96

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