Healthcare provider profile · identity verified

Grace Whei Kao, D.O.

Internal Medicine · SALEM, OR · NPI 1174874176

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	314	110
Levothyroxine Sodium	Levothyroxine Sodium	310	112
Losartan Potassium	Losartan Potassium	209	75
Omeprazole	Omeprazole	209	62
Lisinopril	Lisinopril	192	75
Gabapentin	Gabapentin	177	61
Amlodipine Besylate	Amlodipine Besylate	165	67
Duloxetine Hcl	Duloxetine Hcl	148	42
Metoprolol Succinate	Metoprolol Succinate	142	43
Rosuvastatin Calcium	Rosuvastatin Calcium	131	45
Albuterol Sulfate Hfa	Albuterol Sulfate	126	70
Trazodone Hcl	Trazodone Hcl	123	41
Metformin Hcl	Metformin Hcl	111	42
Potassium Chloride	Potassium Chloride	107	36
Furosemide	Furosemide	100	34
Amitriptyline Hcl	Amitriptyline Hcl	98	31
Tramadol Hcl	Tramadol Hcl	87	21
Pantoprazole Sodium	Pantoprazole Sodium	82	26
Montelukast Sodium	Montelukast Sodium	80	29
Tamsulosin Hcl	Tamsulosin Hcl	79	31
Sertraline Hcl	Sertraline Hcl	78	30
Simvastatin	Simvastatin	76	29
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	74	21
Prednisone	Prednisone	72	35
Tizanidine Hcl	Tizanidine Hcl	66	16
Donepezil Hcl	Donepezil Hcl	61	15
Pregabalin	Pregabalin	60	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	59	19
Atenolol	Atenolol	58	16
Baclofen	Baclofen	57	21
Clopidogrel	Clopidogrel Bisulfate	57	19
Metoprolol Tartrate	Metoprolol Tartrate	57	22
Alendronate Sodium	Alendronate Sodium	54	21
Fluticasone Propionate	Fluticasone Propionate	52	19
Prazosin Hcl	Prazosin Hcl	52	suppressed
Hydrochlorothiazide	Hydrochlorothiazide	49	18
Xarelto	Rivaroxaban	48	suppressed
Buspirone Hcl	Buspirone Hcl	47	13
Pravastatin Sodium	Pravastatin Sodium	47	17
Escitalopram Oxalate	Escitalopram Oxalate	46	13
Famotidine	Famotidine	46	16
Glipizide	Glipizide	46	16
Allopurinol	Allopurinol	43	16
Citalopram Hbr	Citalopram Hydrobromide	43	15
Ozempic	Semaglutide	43	suppressed
Metformin Hcl Er	Metformin Hcl	42	15
Zolpidem Tartrate	Zolpidem Tartrate	41	suppressed
Glipizide Er	Glipizide	37	suppressed
Carvedilol	Carvedilol	36	16
Ropinirole Hcl	Ropinirole Hcl	36	13
Estradiol	Estradiol	35	17
Fluoxetine Hcl	Fluoxetine Hcl	35	11
Ibuprofen	Ibuprofen	35	11
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	34	18
Eliquis	Apixaban	34	11
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	34	suppressed
Clonidine Hcl	Clonidine Hcl	31	suppressed
Lovastatin	Lovastatin	31	suppressed
Spironolactone	Spironolactone	31	suppressed
Cephalexin	Cephalexin	30	20
Hydroxyzine Hcl	Hydroxyzine Hcl	30	suppressed
Ondansetron Odt	Ondansetron	30	14
Quetiapine Fumarate	Quetiapine Fumarate	29	suppressed
Celecoxib	Celecoxib	28	11
Diclofenac Sodium	Diclofenac Sodium	28	14
Dicyclomine Hcl	Dicyclomine Hcl	28	suppressed
Mirtazapine	Mirtazapine	28	suppressed
Oxycodone Hcl	Oxycodone Hcl	28	12
Triamcinolone Acetonide	Triamcinolone Acetonide	27	23
Valacyclovir	Valacyclovir Hcl	27	17
Warfarin Sodium	Warfarin Sodium	27	12
Alprazolam	Alprazolam	25	16
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	25	suppressed
Bupropion Hcl Sr	Bupropion Hcl	24	suppressed
Folic Acid	Folic Acid	24	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	24	suppressed
Lorazepam	Lorazepam	24	11
Nystatin	Nystatin	24	13
Meclizine Hcl	Meclizine Hcl	23	suppressed
Olanzapine	Olanzapine	23	suppressed
Risperidone Odt	Risperidone	23	suppressed
Farxiga	Dapagliflozin Propanediol	21	suppressed
Glimepiride	Glimepiride	21	suppressed
Cilostazol	Cilostazol	20	suppressed
Risperidone	Risperidone	20	suppressed
Bupropion Xl	Bupropion Hcl	19	suppressed
Cefuroxime	Cefuroxime Axetil	19	18
Fluconazole	Fluconazole	19	12
Methocarbamol	Methocarbamol	19	suppressed
Myrbetriq	Mirabegron	19	suppressed
Jardiance	Empagliflozin	18	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	18	suppressed
Meloxicam	Meloxicam	18	suppressed
Propranolol Hcl	Propranolol Hcl	18	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	18	suppressed
Fenofibrate	Fenofibrate	17	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	17	suppressed
Paroxetine Hcl	Paroxetine Hcl	17	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	16	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	16	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	16	12
Synthroid	Levothyroxine Sodium	16	suppressed
Azithromycin	Azithromycin	15	11
Dilt-Xr	Diltiazem Hcl	15	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	15	suppressed
Finasteride	Finasteride	15	suppressed
Januvia	Sitagliptin Phosphate	15	suppressed
Methylprednisolone	Methylprednisolone	15	15
Paxlovid	Nirmatrelvir/Ritonavir	15	15
Sotalol	Sotalol Hcl	15	suppressed
Clonazepam	Clonazepam	14	suppressed
Liothyronine Sodium	Liothyronine Sodium	14	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	13	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	13	suppressed
Ondansetron Hcl	Ondansetron Hcl	13	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	12	suppressed
Colesevelam Hcl	Colesevelam Hcl	12	suppressed
Fesoterodine Fumarate Er	Fesoterodine Fumarate	12	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	12	suppressed
Memantine Hcl	Memantine Hcl	12	suppressed
Mupirocin	Mupirocin	12	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	12	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	12	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	12	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	11	11
Ciprofloxacin Hcl	Ciprofloxacin Hcl	11	suppressed
Mounjaro	Tirzepatide	11	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	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