Healthcare provider profile · identity verified

Thomas C. Erdmann, MD

Family Practice · VASHON, WA · NPI 1801838040

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	514	119
Atorvastatin Calcium	Atorvastatin Calcium	420	115
Lisinopril	Lisinopril	377	83
Amlodipine Besylate	Amlodipine Besylate	274	74
Losartan Potassium	Losartan Potassium	268	75
Hydrochlorothiazide	Hydrochlorothiazide	232	53
Gabapentin	Gabapentin	205	55
Trazodone Hcl	Trazodone Hcl	174	46
Liothyronine Sodium	Liothyronine Sodium	154	31
Rosuvastatin Calcium	Rosuvastatin Calcium	153	44
Eliquis	Apixaban	147	21
Tamsulosin Hcl	Tamsulosin Hcl	147	44
Omeprazole	Omeprazole	146	41
Metformin Hcl Er	Metformin Hcl	125	32
Albuterol Sulfate Hfa	Albuterol Sulfate	124	48
Duloxetine Hcl	Duloxetine Hcl	117	14
Metformin Hcl	Metformin Hcl	116	27
Metoprolol Succinate	Metoprolol Succinate	98	34
Fluticasone Propionate	Fluticasone Propionate	92	36
Simvastatin	Simvastatin	90	24
Furosemide	Furosemide	81	21
Carvedilol	Carvedilol	79	23
Pantoprazole Sodium	Pantoprazole Sodium	79	25
Famotidine	Famotidine	77	23
Bupropion Hcl Sr	Bupropion Hcl	72	20
Citalopram Hbr	Citalopram Hydrobromide	72	21
Montelukast Sodium	Montelukast Sodium	70	13
Allopurinol	Allopurinol	68	14
Escitalopram Oxalate	Escitalopram Oxalate	64	16
Atenolol	Atenolol	63	15
Estradiol	Estradiol	62	19
Celecoxib	Celecoxib	59	15
Metoprolol Tartrate	Metoprolol Tartrate	59	13
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	56	13
Lorazepam	Lorazepam	56	19
Tramadol Hcl	Tramadol Hcl	56	14
Zolpidem Tartrate	Zolpidem Tartrate	55	15
Sertraline Hcl	Sertraline Hcl	52	24
Xarelto	Rivaroxaban	52	suppressed
Clopidogrel	Clopidogrel Bisulfate	51	12
Prednisone	Prednisone	50	18
Potassium Chloride	Potassium Chloride	46	13
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	45	suppressed
Spironolactone	Spironolactone	45	13
Jardiance	Empagliflozin	41	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	41	12
Alprazolam	Alprazolam	40	12
Chlorthalidone	Chlorthalidone	40	11
Oxybutynin Chloride Er	Oxybutynin Chloride	40	suppressed
Oxycodone Hcl	Oxycodone Hcl	40	17
Meloxicam	Meloxicam	39	14
Buspirone Hcl	Buspirone Hcl	38	suppressed
Memantine Hcl	Memantine Hcl	38	suppressed
Propranolol Hcl	Propranolol Hcl	37	suppressed
Glipizide	Glipizide	36	suppressed
Warfarin Sodium	Warfarin Sodium	35	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	34	13
Bupropion Xl	Bupropion Hcl	33	13
Pravastatin Sodium	Pravastatin Sodium	33	suppressed
Clonazepam	Clonazepam	32	suppressed
Finasteride	Finasteride	32	12
Metronidazole	Metronidazole	31	17
Alendronate Sodium	Alendronate Sodium	30	11
Progesterone	Progesterone, Micronized	30	suppressed
Diclofenac Sodium	Diclofenac Sodium	29	12
Mirtazapine	Mirtazapine	29	suppressed
Acyclovir	Acyclovir	28	14
Ropinirole Hcl	Ropinirole Hcl	28	suppressed
Cephalexin	Cephalexin	27	14
Valacyclovir	Valacyclovir Hcl	26	16
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	25	13
Triamcinolone Acetonide	Triamcinolone Acetonide	25	16
Ozempic	Semaglutide	24	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	23	20
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	23	suppressed
Paroxetine Hcl	Paroxetine Hcl	23	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	22	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	22	suppressed
Topiramate	Topiramate	22	suppressed
Azithromycin	Azithromycin	21	16
Ramipril	Ramipril	21	suppressed
Rizatriptan	Rizatriptan Benzoate	21	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	21	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	20	suppressed
Donepezil Hcl	Donepezil Hcl	20	suppressed
Estradiol (Once Weekly)	Estradiol	20	suppressed
Ezetimibe	Ezetimibe	20	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	20	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	20	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	20	suppressed
Pradaxa	Dabigatran Etexilate Mesylate	20	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	20	suppressed
Divalproex Sodium Er	Divalproex Sodium	19	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	18	suppressed
Benazepril Hcl	Benazepril Hcl	18	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	18	suppressed
Glipizide Er	Glipizide	18	suppressed
Pregabalin	Pregabalin	18	suppressed
Alvesco	Ciclesonide	17	suppressed
Lovastatin	Lovastatin	17	suppressed
Ondansetron Odt	Ondansetron	17	suppressed
Testosterone	Testosterone	17	suppressed
Verapamil Er	Verapamil Hcl	17	suppressed
Breo Ellipta	Fluticasone/Vilanterol	16	suppressed
Januvia	Sitagliptin Phosphate	16	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	16	suppressed
Sotalol	Sotalol Hcl	16	suppressed
Sucralfate	Sucralfate	16	suppressed
Triazolam	Triazolam	16	suppressed
Stiolto Respimat	Tiotropium Br/Olodaterol Hcl	15	suppressed
Bumetanide	Bumetanide	14	suppressed
Clobetasol Propionate	Clobetasol Propionate	14	suppressed
Clonidine Hcl	Clonidine Hcl	14	suppressed
Lamotrigine	Lamotrigine	14	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	14	suppressed
Armour Thyroid	Thyroid,pork	13	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	13	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	13	suppressed
Fluconazole	Fluconazole	13	11
Glimepiride	Glimepiride	13	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	13	suppressed
Ondansetron Hcl	Ondansetron Hcl	13	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	13	13
Arnuity Ellipta	Fluticasone Furoate	12	suppressed
Diazepam	Diazepam	12	suppressed
Dipyridamole	Dipyridamole	12	suppressed
Humalog Kwikpen U-100	Insulin Lispro	12	suppressed
Latanoprost	Latanoprost	12	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	12	suppressed
Mometasone Furoate	Mometasone Furoate	12	suppressed
Tizanidine Hcl	Tizanidine Hcl	12	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	12	suppressed
Carbamazepine Er	Carbamazepine	11	suppressed
Cefadroxil	Cefadroxil	11	suppressed
Minoxidil	Minoxidil	11	suppressed
Modafinil	Modafinil	11	suppressed
Nystatin	Nystatin	11	suppressed
Risedronate Sodium	Risedronate Sodium	11	suppressed
Risperidone	Risperidone	11	suppressed
Terazosin Hcl	Terazosin Hcl	11	suppressed
Xopenex Hfa	Levalbuterol Tartrate	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