Healthcare provider profile · identity verified

Timothy J Dauwalder, D.O.

Family Practice · UPLAND, CA · NPI 1942379987

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
Levothyroxine Sodium	Levothyroxine Sodium	176	37
Gabapentin	Gabapentin	123	31
Sertraline Hcl	Sertraline Hcl	111	20
Atorvastatin Calcium	Atorvastatin Calcium	102	28
Amlodipine Besylate	Amlodipine Besylate	100	31
Donepezil Hcl	Donepezil Hcl	100	19
Furosemide	Furosemide	96	30
Omeprazole	Omeprazole	94	24
Eliquis	Apixaban	90	25
Memantine Hcl	Memantine Hcl	85	14
Divalproex Sodium	Divalproex Sodium	83	15
Quetiapine Fumarate	Quetiapine Fumarate	74	22
Potassium Chloride	Potassium Chloride	72	24
Metoprolol Tartrate	Metoprolol Tartrate	71	21
Famotidine	Famotidine	63	12
Tamsulosin Hcl	Tamsulosin Hcl	63	21
Trazodone Hcl	Trazodone Hcl	63	18
Escitalopram Oxalate	Escitalopram Oxalate	60	16
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	57	17
Oxybutynin Chloride	Oxybutynin Chloride	56	suppressed
Lorazepam	Lorazepam	53	19
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	49	16
Pantoprazole Sodium	Pantoprazole Sodium	45	suppressed
Latanoprost	Latanoprost	44	11
Metformin Hcl	Metformin Hcl	42	12
Xarelto	Rivaroxaban	36	suppressed
Finasteride	Finasteride	34	12
Lactulose	Lactulose	32	suppressed
Losartan Potassium	Losartan Potassium	31	14
Buspirone Hcl	Buspirone Hcl	29	suppressed
Spironolactone	Spironolactone	29	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	28	suppressed
Pregabalin	Pregabalin	27	suppressed
Metronidazole	Metronidazole	26	suppressed
Aripiprazole	Aripiprazole	25	suppressed
Cephalexin	Cephalexin	25	18
Tramadol Hcl	Tramadol Hcl	25	suppressed
Alendronate Sodium	Alendronate Sodium	24	suppressed
Duloxetine Hcl	Duloxetine Hcl	24	suppressed
Humalog Kwikpen U-100	Insulin Lispro	24	suppressed
Simvastatin	Simvastatin	24	suppressed
Baclofen	Baclofen	23	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	23	suppressed
Levetiracetam	Levetiracetam	23	suppressed
Temazepam	Temazepam	23	suppressed
Clopidogrel	Clopidogrel Bisulfate	22	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	21	suppressed
Midodrine Hcl	Midodrine Hcl	21	suppressed
Montelukast Sodium	Montelukast Sodium	21	suppressed
Prednisone	Prednisone	21	11
Benazepril Hcl	Benazepril Hcl	20	suppressed
Metoprolol Succinate	Metoprolol Succinate	20	suppressed
Hydralazine Hcl	Hydralazine Hcl	19	suppressed
Morphine Sulfate Er	Morphine Sulfate	19	suppressed
Atenolol	Atenolol	18	suppressed
Celecoxib	Celecoxib	18	suppressed
Methenamine Hippurate	Methenamine Hippurate	18	suppressed
Mirtazapine	Mirtazapine	18	suppressed
Nystatin	Nystatin	18	15
Sodium Chloride	0.9 % Sodium Chloride	18	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	17	suppressed
Citalopram Hbr	Citalopram Hydrobromide	17	suppressed
Ropinirole Hcl	Ropinirole Hcl	17	suppressed
Lovastatin	Lovastatin	16	suppressed
Propranolol Hcl	Propranolol Hcl	16	suppressed
Allopurinol	Allopurinol	15	suppressed
Humulin 70/30 Kwikpen	Insulin Nph Hum/Reg Insulin Hm	15	suppressed
Methadone Hcl	Methadone Hcl	15	suppressed
Amiodarone Hcl	Amiodarone Hcl	14	suppressed
Bupropion Hcl Sr	Bupropion Hcl	14	suppressed
Lidocaine	Lidocaine	14	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	14	suppressed
Ondansetron Hcl	Ondansetron Hcl	14	13
Solifenacin Succinate	Solifenacin Succinate	14	suppressed
Novolin R	Insulin Regular, Human	13	suppressed
Azithromycin	Azithromycin	12	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Buprenorphine-Naloxone	Buprenorphine Hcl/Naloxone Hcl	12	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	12	suppressed
Methimazole	Methimazole	12	suppressed
Nifedipine Er	Nifedipine	12	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	11	suppressed
Carvedilol	Carvedilol	11	suppressed
Enulose	Lactulose	11	suppressed
Guanfacine Hcl	Guanfacine Hcl	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