Healthcare provider profile · identity verified

Daniel H Null, MD

Internal Medicine · SAN FRANCISCO, CA · NPI 1689638744

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	477	118
Amlodipine Besylate	Amlodipine Besylate	225	68
Levothyroxine Sodium	Levothyroxine Sodium	175	38
Gabapentin	Gabapentin	155	38
Rosuvastatin Calcium	Rosuvastatin Calcium	153	50
Tamsulosin Hcl	Tamsulosin Hcl	152	41
Losartan Potassium	Losartan Potassium	134	45
Omeprazole	Omeprazole	122	32
Oxycodone Hcl	Oxycodone Hcl	120	15
Eliquis	Apixaban	113	26
Metformin Hcl	Metformin Hcl	106	24
Finasteride	Finasteride	102	28
Fluticasone Propionate	Fluticasone Propionate	95	27
Hydrochlorothiazide	Hydrochlorothiazide	93	23
Allopurinol	Allopurinol	88	19
Trazodone Hcl	Trazodone Hcl	87	25
Pantoprazole Sodium	Pantoprazole Sodium	86	27
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	83	16
Metoprolol Succinate	Metoprolol Succinate	72	20
Lisinopril	Lisinopril	68	19
Lorazepam	Lorazepam	68	18
Simvastatin	Simvastatin	65	18
Albuterol Sulfate Hfa	Albuterol Sulfate	63	25
Tramadol Hcl	Tramadol Hcl	62	suppressed
Diazepam	Diazepam	54	suppressed
Mirtazapine	Mirtazapine	54	18
Benazepril Hcl	Benazepril Hcl	53	14
Atenolol	Atenolol	52	14
Escitalopram Oxalate	Escitalopram Oxalate	52	11
Irbesartan	Irbesartan	49	14
Zolpidem Tartrate	Zolpidem Tartrate	48	15
Spironolactone	Spironolactone	46	suppressed
Duloxetine Hcl	Duloxetine Hcl	45	suppressed
Metformin Hcl Er	Metformin Hcl	45	suppressed
Pravastatin Sodium	Pravastatin Sodium	42	11
Potassium Chloride	Potassium Chloride	41	12
Jardiance	Empagliflozin	39	11
Furosemide	Furosemide	35	12
Ondansetron Hcl	Ondansetron Hcl	35	11
Bupropion Xl	Bupropion Hcl	32	suppressed
Sertraline Hcl	Sertraline Hcl	31	11
Alprazolam	Alprazolam	29	suppressed
Chlorthalidone	Chlorthalidone	29	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	29	suppressed
Loperamide	Loperamide Hcl	29	suppressed
Synthroid	Levothyroxine Sodium	29	suppressed
Valsartan	Valsartan	29	suppressed
Creon	Lipase/Protease/Amylase	28	suppressed
Januvia	Sitagliptin Phosphate	28	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	28	suppressed
Ramipril	Ramipril	28	suppressed
Carvedilol	Carvedilol	27	suppressed
Latanoprost	Latanoprost	27	suppressed
Montelukast Sodium	Montelukast Sodium	27	suppressed
Estradiol	Estradiol	26	suppressed
Telmisartan	Telmisartan	26	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	26	suppressed
Citalopram Hbr	Citalopram Hydrobromide	25	suppressed
Alendronate Sodium	Alendronate Sodium	24	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	24	suppressed
Famotidine	Famotidine	23	suppressed
Testosterone	Testosterone	23	suppressed
Ipratropium Bromide	Ipratropium Bromide	22	suppressed
Lidocaine	Lidocaine	22	suppressed
Oxycontin	Oxycodone Hcl	22	suppressed
Fentanyl	Fentanyl	21	suppressed
Ibuprofen	Ibuprofen	21	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	21	suppressed
Morphine Sulfate Er	Morphine Sulfate	21	suppressed
Spiriva Handihaler	Tiotropium Bromide	21	suppressed
Valacyclovir	Valacyclovir Hcl	21	13
Belbuca	Buprenorphine Hcl	20	suppressed
Farxiga	Dapagliflozin Propanediol	20	suppressed
Nifedipine Er	Nifedipine	20	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	19	suppressed
Azithromycin	Azithromycin	19	13
Ezetimibe	Ezetimibe	19	suppressed
Metronidazole	Metronidazole	19	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	19	19
Triamcinolone Acetonide	Triamcinolone Acetonide	19	14
Felodipine Er	Felodipine	18	suppressed
Glipizide	Glipizide	18	suppressed
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	18	suppressed
Meloxicam	Meloxicam	18	suppressed
Warfarin Sodium	Warfarin Sodium	18	suppressed
Acyclovir	Acyclovir	17	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	17	suppressed
Glimepiride	Glimepiride	17	suppressed
Hydrocortisone	Hydrocortisone	17	suppressed
Prednisone	Prednisone	17	suppressed
Repaglinide	Repaglinide	17	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	17	suppressed
Clopidogrel	Clopidogrel Bisulfate	16	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	16	suppressed
Xarelto	Rivaroxaban	16	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	15	suppressed
Bupropion Hcl Sr	Bupropion Hcl	15	suppressed
Dulera	Mometasone/Formoterol	15	suppressed
Lovastatin	Lovastatin	15	suppressed
Mupirocin	Mupirocin	15	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	15	suppressed
Baclofen	Baclofen	14	suppressed
Enalapril Maleate	Enalapril Maleate	14	suppressed
Ventolin Hfa	Albuterol Sulfate	14	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	13	suppressed
Clotrimazole	Clotrimazole	13	suppressed
Ondansetron Odt	Ondansetron	13	suppressed
Repatha Sureclick	Evolocumab	13	suppressed
Rizatriptan	Rizatriptan Benzoate	13	suppressed
Ursodiol	Ursodiol	13	suppressed
Verapamil Hcl	Verapamil Hcl	13	suppressed
Zolpidem Tartrate Er	Zolpidem Tartrate	13	suppressed
Bupropion Hcl	Bupropion Hcl	12	suppressed
Diclofenac Sodium	Diclofenac Sodium	12	suppressed
Donepezil Hcl	Donepezil Hcl	12	suppressed
Doxepin Hcl	Doxepin Hcl	12	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	12	suppressed
Linzess	Linaclotide	12	suppressed
Sotalol	Sotalol Hcl	12	suppressed
Xtampza Er	Oxycodone Myristate	12	suppressed
Carbamazepine	Carbamazepine	11	suppressed
Methimazole	Methimazole	11	suppressed
Rybelsus	Semaglutide	11	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	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