Healthcare provider profile · identity verified

Gerald Lim, M.D.

Family Practice · GARDEN GROVE, CA · NPI 1427091958

Profile state: partd only Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

We did not find matching Open Payments records for this doctor in 2025.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

There is no payer-company set available for this comparison.

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

Brand	Generic	Claims	Beneficiaries
Atorvastatin Calcium	Atorvastatin Calcium	291	169
Amlodipine Besylate	Amlodipine Besylate	160	86
Losartan Potassium	Losartan Potassium	149	79
Lisinopril	Lisinopril	126	70
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	120	62
Rosuvastatin Calcium	Rosuvastatin Calcium	117	68
Levothyroxine Sodium	Levothyroxine Sodium	106	57
Pantoprazole Sodium	Pantoprazole Sodium	104	45
Metformin Hcl	Metformin Hcl	91	47
Omeprazole	Omeprazole	78	43
Glipizide	Glipizide	68	40
Metformin Hcl Er	Metformin Hcl	67	40
Meloxicam	Meloxicam	66	34
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	64	40
Tamsulosin Hcl	Tamsulosin Hcl	64	34
Gabapentin	Gabapentin	60	45
Tramadol Hcl	Tramadol Hcl	59	25
Hydrochlorothiazide	Hydrochlorothiazide	52	32
Pradaxa	Dabigatran Etexilate Mesylate	51	23
Simvastatin	Simvastatin	51	28
Atenolol	Atenolol	50	33
Jardiance	Empagliflozin	47	23
Metoprolol Tartrate	Metoprolol Tartrate	45	21
Terazosin Hcl	Terazosin Hcl	45	26
Trazodone Hcl	Trazodone Hcl	45	22
Hydralazine Hcl	Hydralazine Hcl	42	15
Albuterol Sulfate Hfa	Albuterol Sulfate	41	35
Triamcinolone Acetonide	Triamcinolone Acetonide	41	26
Alendronate Sodium	Alendronate Sodium	39	26
Doxycycline Monohydrate	Doxycycline Monohydrate	39	39
Potassium Chloride	Potassium Chloride	38	26
Memantine Hcl	Memantine Hcl	36	suppressed
Naproxen	Naproxen	34	13
Lorazepam	Lorazepam	31	16
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	30	19
Ibuprofen	Ibuprofen	29	16
Ozempic	Semaglutide	29	17
Mirtazapine	Mirtazapine	27	suppressed
Allopurinol	Allopurinol	26	16
Alprazolam	Alprazolam	26	18
Finasteride	Finasteride	24	12
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	23	14
Escitalopram Oxalate	Escitalopram Oxalate	22	suppressed
Clonazepam	Clonazepam	21	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	21	14
Ondansetron Odt	Ondansetron	21	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	21	suppressed
Donepezil Hcl	Donepezil Hcl	20	11
Fluoxetine Hcl	Fluoxetine Hcl	20	12
Eliquis	Apixaban	19	suppressed
Sertraline Hcl	Sertraline Hcl	19	12
Sumatriptan Succinate	Sumatriptan Succinate	19	11
Duloxetine Hcl	Duloxetine Hcl	18	13
Mupirocin	Mupirocin	18	15
Temazepam	Temazepam	18	suppressed
Azelastine Hcl	Azelastine Hcl	17	11
Fenofibrate	Fenofibrate	17	suppressed
Furosemide	Furosemide	17	13
Ipratropium Bromide	Ipratropium Bromide	17	suppressed
Fluticasone Propionate	Fluticasone Propionate	16	suppressed
Nystatin	Nystatin	16	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	16	suppressed
Bupropion Hcl Sr	Bupropion Hcl	15	suppressed
Ezetimibe	Ezetimibe	15	suppressed
Famotidine	Famotidine	15	suppressed
Humulin N	Insulin Nph Human Isophane	15	suppressed
Humulin N Kwikpen	Insulin Nph Human Isophane	15	suppressed
Hydrocortisone	Hydrocortisone	14	suppressed
Tacrolimus	Tacrolimus	14	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	14	suppressed
Cephalexin	Cephalexin	13	13
Ciprofloxacin Hcl	Ciprofloxacin Hcl	13	11
Clopidogrel	Clopidogrel Bisulfate	13	suppressed
Latanoprost	Latanoprost	13	suppressed
Metoprolol Succinate	Metoprolol Succinate	13	suppressed
Morphine Sulfate Er	Morphine Sulfate	13	suppressed
Prednisone	Prednisone	13	13
Pregabalin	Pregabalin	13	suppressed
Acyclovir	Acyclovir	12	suppressed
Adacel Tdap	Diph,pertuss(Acell),tet Vac/Pf	12	12
Betamethasone Diprop Augmented	Betamethasone/Propylene Glyc	12	suppressed
Colchicine	Colchicine	12	suppressed
Glipizide Er	Glipizide	12	suppressed
Ketoconazole	Ketoconazole	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	11
Bisoprolol Fumarate	Bisoprolol Fumarate	11	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	11	suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

Year	General Payments	Main payer	Explicit products	Company overlaps	Part D coverage
2025	—	—	—	—	—
2024	—	—	—	—	Complete

Questions to ask

Questions you could discuss with your doctor

Are there reasonable alternatives I should understand when we discuss treatment options?
How should I interpret the industry-payment records shown here in the context of my care?

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.

Loaded source releases

Dataset	Year	Publication	Source
CMS Open Payments — General Payments	2025	2026-06-30	Original source
Medicare Part D Prescribers by Provider and Drug	2024	2026-05-06	Original source
NPPES Data Dissemination V2	current / reference data	2026-08-10	Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error