DR. LOI LAM M.D.
Prescription History 1861692964
Internal Medicine in Vallejo, CA

Active since July 18, 2007PECOS EnrolledAccepts Medicare Assignment
975 SERENO DR, VALLEJO, CA 94589(707) 651-4767 Get Directions

NPPES record last updated: December 14, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. LOI LAM M.D., an active Internal Medicine specialist practicing in Vallejo, CA. Our medical registry currently tracks 11 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 194 documented patient claims. Among these therapy options, the most frequently utilized medication is Metoprolol Succinate, which accounts for 28 claims alone. Use the table below to sort by claims, cost, or utilization compared with the state average; select any medication for its full profile.

11
Medications
194
Total Claims
545
30-Day Fills
Metoprolol Succinate
Most Prescribed · 28 claims
View details
11 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by DR. LOI LAM M.D. in 2023, with prescription volumes, average cost per fill, and CA state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other CA PrescribersVs. CA Avg

About Metoprolol Succinate: This medication is a beta-blocker used to treat chest pain (angina), heart failure, and high blood pressure. Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. This drug works by blocking the action of certain natural chemicals in your body (such as epinephrine) that affect the heart and blood vessels. This lowers heart rate, blood pressure, and strain on the heart. A selective adrenergic beta-1 blocking agent that is commonly used to treat ANGINA PECTORIS; HYPERTENSION; and CARDIAC ARRHYTHMIAS.

In 2023, this provider wrote 28 Medicare prescriptions for Metoprolol Succinate, about a third of the volume of the typical California prescriber of this medication (82). Medicare paid an average of $11.26 per fill, versus $20.10 statewide.

How often this provider prescribes it

This provider
28
CA average
82.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$11.26
CA average
$20.10

This provider's average cost per fill is below the CA average for this medication.

79.3
30-Day Fills
standardized to 30-day supplies
2,380
Days of Medication
total across all patients in 2023

About Furosemide: Furosemide is used to reduce extra fluid in the body (edema) caused by conditions such as heart failure, liver disease, and kidney disease. Show more ▾

This can lessen symptoms such as shortness of breath and swelling in your arms, legs, and abdomen. This drug is also used to treat high blood pressure. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Furosemide is a water pill (diuretic) that causes you to make more urine. This helps your body get rid of extra water and salt. A benzoic-sulfonamide-furan. It is a diuretic with fast onset and short duration that is used for EDEMA and chronic RENAL INSUFFICIENCY.

In 2023, this provider wrote 26 Medicare prescriptions for Furosemide, about a third of the volume of the typical California prescriber of this medication (65). Medicare paid an average of $12.16 per fill, versus $7.59 statewide.

How often this provider prescribes it

This provider
26
CA average
65.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$12.16
CA average
$7.59

Gross Part D cost per fill; not the patient's out-of-pocket price.

74.4
30-Day Fills
standardized to 30-day supplies
2,225
Days of Medication
total across all patients in 2023

About Pantoprazole Sodium: Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux). Show more ▾

It works by decreasing the amount of acid your stomach makes. This medication relieves symptoms such as heartburn, difficulty swallowing, and cough. It helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus. Pantoprazole belongs to a class of drugs known as proton pump inhibitors (PPIs). 2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER.

In 2023, this provider wrote 24 Medicare prescriptions for Pantoprazole Sodium, about a third of the volume of the typical California prescriber of this medication (62). Medicare paid an average of $15.01 per fill, versus $16.94 statewide.

How often this provider prescribes it

This provider
24
CA average
62.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$15.01
CA average
$16.94

This provider's average cost per fill is below the CA average for this medication.

62.7
30-Day Fills
standardized to 30-day supplies
1,880
Days of Medication
total across all patients in 2023

About Amlodipine Besylate: Amlodipine is used with or without other medications to treat high blood pressure. Show more ▾

Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Amlodipine belongs to a class of drugs known as calcium channel blockers. It works by relaxing blood vessels so blood can flow more easily. Amlodipine is also used to prevent certain types of chest pain (angina). It may help to increase your ability to exercise and decrease the frequency of angina attacks. It should not be used to treat attacks of chest pain when they occur. Use other medications (such as sublingual nitroglycerin) to relieve attacks of chest pain as directed by your doctor. A long-acting dihydropyridine calcium channel blocker. It is effective in the treatment of ANGINA PECTORIS and HYPERTENSION.

In 2023, this provider wrote 21 Medicare prescriptions for Amlodipine Besylate, about 15% of the volume of the typical California prescriber of this medication (138). Medicare paid an average of $12.94 per fill, versus $9.16 statewide.

How often this provider prescribes it

This provider
21
CA average
138.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$12.94
CA average
$9.16

Gross Part D cost per fill; not the patient's out-of-pocket price.

69.9
30-Day Fills
standardized to 30-day supplies
2,100
Days of Medication
total across all patients in 2023

About Atorvastatin Calcium: Atorvastatin is used along with a proper diet to help lower bad cholesterol and fats (such as LDL, triglycerides) and raise good cholesterol (HDL) in the blood. Show more ▾

It belongs to a group of drugs known as statins. It works by reducing the amount of cholesterol made by the liver. Lowering bad cholesterol and triglycerides and raising good cholesterol decreases the risk of heart disease and helps prevent strokes and heart attacks. In addition to eating a proper diet (such as a low-cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Consult your doctor for more details. A pyrrole and heptanoic acid derivative, HYDROXYMETHYLGLUTARYL-COA REDUCTASE INHIBITOR (statin), and ANTICHOLESTEREMIC AGENT that is used to reduce serum levels of LDL-CHOLESTEROL; APOLIPOPROTEIN B; and TRIGLYCERIDES. It is used to increase serum levels of HDL-CHOLESTEROL in the treatment of HYPERLIPIDEMIAS, and for the prevention of CARDIOVASCULAR DISEASES in patients with multiple risk factors.

In 2023, this provider wrote 17 Medicare prescriptions for Atorvastatin Calcium, about 9% of the volume of the typical California prescriber of this medication (194). Medicare paid an average of $18.74 per fill, versus $14.16 statewide.

How often this provider prescribes it

This provider
17
CA average
194.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$18.74
CA average
$14.16

Gross Part D cost per fill; not the patient's out-of-pocket price.

55
30-Day Fills
standardized to 30-day supplies
1,650
Days of Medication
total across all patients in 2023

About Losartan Potassium: Losartan is used to treat high blood pressure (hypertension) and to help protect the kidneys from damage due to diabetes. Show more ▾

It is also used to lower the risk of strokes in patients with high blood pressure and an enlarged heart. Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems. Losartan belongs to a class of drugs called angiotensin receptor blockers (ARBs). It works by relaxing blood vessels so that blood can flow more easily. An antagonist of ANGIOTENSIN TYPE 1 RECEPTOR with antihypertensive activity due to the reduced pressor effect of ANGIOTENSIN II.

In 2023, this provider wrote 17 Medicare prescriptions for Losartan Potassium, about 15% of the volume of the typical California prescriber of this medication (116). Medicare paid an average of $9.32 per fill, versus $13.35 statewide.

How often this provider prescribes it

This provider
17
CA average
116.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$9.32
CA average
$13.35

This provider's average cost per fill is below the CA average for this medication.

56.6
30-Day Fills
standardized to 30-day supplies
1,700
Days of Medication
total across all patients in 2023

About Isosorbide Mononitrate Er: Isosorbide mononitrate is used to prevent chest pain (angina) in patients with a certain heart condition (coronary artery disease). Show more ▾

This medication belongs to a class of drugs known as nitrates. It works by relaxing and widening blood vessels so blood can flow more easily to the heart. This medication will not relieve chest pain once it occurs. Also, it is not intended to be taken just before physical activities (such as exercise or sexual intercourse) to prevent chest pain. Other medications may be prescribed by your doctor for these conditions. Consult your doctor for more details.

In 2023, this provider wrote 14 Medicare prescriptions for Isosorbide Mononitrate Er, about a third of the volume of the typical California prescriber of this medication (35). Medicare paid an average of $16.10 per fill, versus $19.12 statewide.

How often this provider prescribes it

This provider
14
CA average
35.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$16.10
CA average
$19.12

This provider's average cost per fill is below the CA average for this medication.

36.2
30-Day Fills
standardized to 30-day supplies
1,088
Days of Medication
total across all patients in 2023

About Clopidogrel: Clopidogrel is used to prevent heart attacks and strokes in persons with heart disease (recent heart attack), recent stroke, or blood circulation disease (peripheral vascular disease). Show more ▾

It is also used with aspirin to treat new/worsening chest pain (new heart attack, unstable angina) and to keep blood vessels open and prevent blood clots after certain procedures (such as cardiac stent). Clopidogrel works by blocking platelets from sticking together and prevents them from forming harmful clots. It is an antiplatelet drug. It helps keep blood flowing smoothly in your body. A ticlopidine analog and platelet purinergic P2Y receptor antagonist that inhibits adenosine diphosphate-mediated PLATELET AGGREGATION. It is used to prevent THROMBOEMBOLISM in patients with ARTERIAL OCCLUSIVE DISEASES; MYOCARDIAL INFARCTION; STROKE; or ATRIAL FIBRILLATION.

In 2023, this provider wrote 13 Medicare prescriptions for Clopidogrel, about a quarter of the volume of the typical California prescriber of this medication (48). Medicare paid an average of $19.76 per fill, versus $17.32 statewide.

How often this provider prescribes it

This provider
13
CA average
48.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$19.76
CA average
$17.32

Gross Part D cost per fill; not the patient's out-of-pocket price.

43
30-Day Fills
standardized to 30-day supplies
1,290
Days of Medication
total across all patients in 2023

About Potassium Chloride: This medication is a mineral supplement used to treat or prevent low amounts of potassium in the blood. Show more ▾

A normal level of potassium in the blood is important. Potassium helps your cells, kidneys, heart, muscles, and nerves work properly. Most people get enough potassium by eating a well-balanced diet. Some conditions that can lower your body's potassium level include severe prolonged diarrhea and vomiting, hormone problems such as hyperaldosteronism, or treatment with water pills/diuretics. A white crystal or crystalline powder used in BUFFERS; FERTILIZERS; and EXPLOSIVES. It can be used to replenish ELECTROLYTES and restore WATER-ELECTROLYTE BALANCE in treating HYPOKALEMIA.

In 2023, this provider wrote 12 Medicare prescriptions for Potassium Chloride, about a quarter of the volume of the typical California prescriber of this medication (48). Medicare paid an average of $24.65 per fill, versus $34.30 statewide.

How often this provider prescribes it

This provider
12
CA average
48.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$24.65
CA average
$34.30

This provider's average cost per fill is below the CA average for this medication.

37.6
30-Day Fills
standardized to 30-day supplies
1,130
Days of Medication
total across all patients in 2023

About Nitroglycerin: Nitroglycerin ointment is used to prevent chest pain (angina) in people with a certain heart condition (coronary artery disease). Show more ▾

This medication belongs to a class of drugs known as nitrates. Angina occurs when the heart muscle is not getting enough blood. This drug works by relaxing and widening blood vessels so blood can flow more easily to the heart. This medication will not relieve chest pain once it occurs. It is also not intended to be used just before physical activities (such as exercise, sexual activity) to prevent chest pain. Other medications may be needed in these situations. Consult your doctor for more details. A volatile vasodilator which relieves ANGINA PECTORIS by stimulating GUANYLATE CYCLASE and lowering cytosolic calcium. It is also sometimes used for TOCOLYSIS and explosives.

In 2023, this provider wrote 11 Medicare prescriptions for Nitroglycerin, about a third of the volume of the typical California prescriber of this medication (32). Medicare paid an average of $24.89 per fill, versus $26.57 statewide.

How often this provider prescribes it

This provider
11
CA average
32.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$24.89
CA average
$26.57

This provider's average cost per fill is below the CA average for this medication.

11.5
30-Day Fills
standardized to 30-day supplies
345
Days of Medication
total across all patients in 2023

About Tamsulosin Hcl: Tamsulosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH). Show more ▾

It does not shrink the prostate, but it works by relaxing the muscles in the prostate and the bladder. This helps to relieve symptoms of BPH such as difficulty in beginning the flow of urine, weak stream, and the need to urinate often or urgently (including during the middle of the night). Tamsulosin belongs to a class of drugs known as alpha blockers. Do not use this medication to treat high blood pressure.

In 2023, this provider wrote 11 Medicare prescriptions for Tamsulosin Hcl, about 14% of the volume of the typical California prescriber of this medication (80). Medicare paid an average of $14.56 per fill, versus $19.90 statewide.

How often this provider prescribes it

This provider
11
CA average
80.0

This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$14.56
CA average
$19.90

This provider's average cost per fill is below the CA average for this medication.

18.7
30-Day Fills
standardized to 30-day supplies
560
Days of Medication
total across all patients in 2023
No medications match the current filters.
= the 5 medications this provider prescribes most. More than typical Typical Less than typical= prescription volume vs the average CA prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the CA average cost per fill.

About this data. The prescription history for DR. LOI LAM M.D. is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2023, the most recent federal release. Figures cover prescriptions filled for Medicare Part D beneficiaries only; prescriptions under private insurance, Medicaid, or self-pay plans are not included. Because prescribing decisions are generally consistent across coverage types, this record offers a useful view of the overall Internal Medicine prescribing approach at this Vallejo, CA practice.

Reading the costs. Drug costs are gross amounts paid to pharmacies under Part D, including both plan and beneficiary payments. They are not the price a patient pays at the pharmacy counter. Medications with fewer than 11 claims are excluded from the federal source data, and state comparisons use the average volume among CA prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.