Healthcare provider profile · identity verified

Robert William Gamboe, PA-C

Physician Assistant · REDDING, CA · NPI 1396012654

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	255	63
Lisinopril	Lisinopril	238	61
Albuterol Sulfate Hfa	Albuterol Sulfate	142	35
Gabapentin	Gabapentin	141	24
Levothyroxine Sodium	Levothyroxine Sodium	141	32
Omeprazole	Omeprazole	136	27
Hydrochlorothiazide	Hydrochlorothiazide	94	30
Metformin Hcl	Metformin Hcl	79	25
Tamsulosin Hcl	Tamsulosin Hcl	68	15
Pantoprazole Sodium	Pantoprazole Sodium	67	16
Amlodipine Besylate	Amlodipine Besylate	65	22
Celecoxib	Celecoxib	65	suppressed
Montelukast Sodium	Montelukast Sodium	63	11
Fluticasone Propionate	Fluticasone Propionate	60	21
Buspirone Hcl	Buspirone Hcl	58	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	57	suppressed
Baclofen	Baclofen	56	suppressed
Trazodone Hcl	Trazodone Hcl	54	17
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	53	13
Losartan Potassium	Losartan Potassium	48	15
Duloxetine Hcl	Duloxetine Hcl	44	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	42	suppressed
Ibuprofen	Ibuprofen	38	16
Trulicity	Dulaglutide	37	suppressed
Furosemide	Furosemide	36	suppressed
Ozempic	Semaglutide	36	suppressed
Famotidine	Famotidine	35	suppressed
Bupropion Xl	Bupropion Hcl	34	suppressed
Simvastatin	Simvastatin	33	suppressed
Eliquis	Apixaban	30	suppressed
Metoprolol Succinate	Metoprolol Succinate	29	suppressed
Rybelsus	Semaglutide	29	suppressed
Diclofenac Sodium	Diclofenac Sodium	27	suppressed
Meloxicam	Meloxicam	27	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	27	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	25	suppressed
Tramadol Hcl	Tramadol Hcl	25	suppressed
Alendronate Sodium	Alendronate Sodium	24	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	24	suppressed
Pregabalin	Pregabalin	24	suppressed
Glimepiride	Glimepiride	23	suppressed
Sertraline Hcl	Sertraline Hcl	23	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	22	suppressed
Synthroid	Levothyroxine Sodium	22	suppressed
Carvedilol	Carvedilol	21	suppressed
Clotrimazole	Clotrimazole	21	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	21	suppressed
Warfarin Sodium	Warfarin Sodium	19	suppressed
Atenolol	Atenolol	18	suppressed
Glipizide	Glipizide	18	suppressed
Ondansetron Hcl	Ondansetron Hcl	18	suppressed
Potassium Chloride	Potassium Chloride	18	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	18	suppressed
Breo Ellipta	Fluticasone/Vilanterol	16	suppressed
Jardiance	Empagliflozin	16	suppressed
Lovastatin	Lovastatin	16	suppressed
Morphine Sulfate Er	Morphine Sulfate	16	suppressed
Olanzapine	Olanzapine	16	suppressed
Xarelto	Rivaroxaban	16	suppressed
Aripiprazole	Aripiprazole	15	suppressed
Citalopram Hbr	Citalopram Hydrobromide	15	suppressed
Januvia	Sitagliptin Phosphate	15	suppressed
Acyclovir	Acyclovir	14	suppressed
Bupropion Hcl	Bupropion Hcl	14	suppressed
Gemtesa	Vibegron	14	suppressed
Ondansetron Odt	Ondansetron	14	suppressed
Levemir Flexpen	Insulin Detemir	13	suppressed
Naproxen	Naproxen	13	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	13	suppressed
Primidone	Primidone	13	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	13	suppressed
Ventolin Hfa	Albuterol Sulfate	13	suppressed
Benztropine Mesylate	Benztropine Mesylate	12	suppressed
Divalproex Sodium	Divalproex Sodium	12	suppressed
Fenofibrate	Fenofibrate,micronized	12	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Selegiline Hcl	Selegiline Hcl	12	suppressed
Tizanidine Hcl	Tizanidine Hcl	12	suppressed
Allopurinol	Allopurinol	11	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	11	suppressed
Metformin Hcl Er	Metformin Hcl	11	suppressed
Pravastatin Sodium	Pravastatin Sodium	11	suppressed
Sildenafil Citrate	Sildenafil Citrate	11	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	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