Healthcare provider profile · identity verified

David C. Preston, MD

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · CLEVELAND, OH · NPI 1316965791

Profile state: payments and partd 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

CMS Open Payments records show David C. Preston, MD received $1,013.54 in general payments during 2025 across 42 reported records.

Alexion Pharmaceuticals, Inc. accounted for 28.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 15 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Ultomiris.

ARGENX US, INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported VYVGART as an associated drug or biological on 6851 records involving 2825 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Vyvgart by this doctor in 2024.

Alexion Pharmaceuticals, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ULTOMIRIS as an associated drug or biological on 24281 records involving 10608 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Ultomiris by this doctor in 2024.

PFIZER INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported PANZYGA as an associated drug or biological on 8346 records involving 3334 distinct recipient NPIs. Public Medicare Part D data also shows 34 claims for Panzyga by this doctor in 2024.

Takeda Pharmaceuticals U.S.A., Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported CUVITRU as an associated drug or biological on 7118 records involving 2610 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Cuvitru by this doctor in 2024.

Takeda Pharmaceuticals U.S.A., Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported GAMMAGARD LIQUID as an associated drug or biological on 29 records involving 8 distinct recipient NPIs. Public Medicare Part D data also shows 22 claims for Gammagard Liquid by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$1,013.54

42 reported records · 14 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $286.3428.2%152025
ARGENX US, INC. Unresolved — no canonical attribution shown $200.1919.8%92025
UCB, Inc. Unresolved — no canonical attribution shown $162.0116.0%12025
Amgen Inc. Unresolved — no canonical attribution shown $59.475.9%32025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $49.724.9%22025
Alnylam Pharmaceuticals Inc. Unresolved — no canonical attribution shown $41.454.1%12025
Lundbeck LLC Unresolved — no canonical attribution shown $37.973.8%22025
TG Therapeutics, Inc. Unresolved — no canonical attribution shown $37.223.7%22025
PFIZER INC. Unresolved — no canonical attribution shown $30.103.0%22025
Averitas Pharma Inc. Unresolved — no canonical attribution shown $26.472.6%12025
Genentech USA, Inc. Unresolved — no canonical attribution shown $25.892.5%12025
ABBVIE INC. Unresolved — no canonical attribution shown $22.022.2%12025
SK Life Science, Inc. SK Life Science, Inc.
exact · evidence 2025-04-03
$18.951.9%12025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $15.741.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,013.5442

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
ULTOMIRIS
Normalized: ultomiris
Biological Alexion Pharmaceuticals, Inc. $286.34 15 2025
Source payment records
VYVGART HYTRULO
Normalized: vyvgart hytrulo
Drug ARGENX US, INC. $200.19 9 2025
Source payment records
HYQVIA
Normalized: hyqvia
Biological Takeda Pharmaceuticals U.S.A., Inc. $49.72 2 2025
Source payment records
UPLIZNA
Normalized: uplizna
Biological Amgen Inc. $43.97 2 2025
Source payment records
ONPATTRO
Normalized: onpattro
Drug Alnylam Pharmaceuticals Inc. $41.45 1 2025
Source payment records
VYEPTI
Normalized: vyepti
Biological Lundbeck LLC $37.97 2 2025
Source payment records
BRIUMVI
Normalized: briumvi
Drug TG Therapeutics, Inc. $37.22 2 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $30.10 2 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $30.10 2 2025
Source payment records
QUTENZA
Normalized: qutenza
Drug Averitas Pharma Inc. $26.47 1 2025
Source payment records
Ocrevus
Normalized: ocrevus
Biological Genentech USA, Inc. $25.89 1 2025
Source payment records
BOTOX
Normalized: botox
Biological ABBVIE INC. $22.02 1 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $16.10 1 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $15.74 1 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $14.00 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
ULTOMIRIS
ultomiris
2025 Ultomiris 2024 16
Beneficiary count suppressed
exact normalized Medicare Part D

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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
ARGENX US, INC.
Exact reporting entity; no affiliate inference
2025 VYVGART
open payments reported associated product
CMS Open Payments — General Payments
6851 supporting records · 2825 recipient NPIs · example record 1240416066
Vyvgart · 2024
Exact normalized brand match · 1 Part D row
15 suppressed by CMS
Alexion Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 ULTOMIRIS
open payments reported associated product
CMS Open Payments — General Payments
24281 supporting records · 10608 recipient NPIs · example record 1202912926
Ultomiris · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 PANZYGA
open payments reported associated product
CMS Open Payments — General Payments
8346 supporting records · 3334 recipient NPIs · example record 1228795271
Panzyga · 2024
Exact normalized brand match · 1 Part D row
34 suppressed by CMS
Takeda Pharmaceuticals U.S.A., Inc.
Exact reporting entity; no affiliate inference
2025 CUVITRU
open payments reported associated product
CMS Open Payments — General Payments
7118 supporting records · 2610 recipient NPIs · example record 1223616510
Cuvitru · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS
Takeda Pharmaceuticals U.S.A., Inc.
Exact reporting entity; no affiliate inference
2025 GAMMAGARD LIQUID
open payments reported associated product
CMS Open Payments — General Payments
29 supporting records · 8 recipient NPIs · example record 1223786557
Gammagard Liquid · 2024
Exact normalized brand match · 1 Part D row
22 suppressed by CMS

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

BrandGenericClaimsBeneficiaries
HizentraImmun Glob G(Igg)/Pro/Iga 0-5046suppressed
Solu-CortefHydrocortisone Sodium Succ/Pf38suppressed
PrivigenImmun Glob G(Igg)/Pro/Iga 0-5036suppressed
PrednisonePrednisone3513
PanzygaImmun Glob G(Igg)-Ifas/Glycine34suppressed
GabapentinGabapentin2511
Gammagard LiquidImmun Glob G(Igg)/Gly/Iga Ov5022suppressed
Gamunex-CImmune Globul G/Gly/Iga Avg 4621suppressed
AzathioprineAzathioprine20suppressed
Mycophenolate MofetilMycophenolate Mofetil18suppressed
OctagamImmun Globg(Igg)/Malt/Iga Ov5017suppressed
UltomirisRavulizumab-Cwvz16suppressed
VyvgartEfgartigimod Alfa-Fcab15suppressed
CuvitruImmun Glob G(Igg)/Gly/Iga Ov5012suppressed
Pyridostigmine Bromide ErPyridostigmine Bromide12suppressed
Methylprednisolone Sodium SuccMethylprednisolone Sod Succ11suppressed

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.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $1,013.54 · 42 records Alexion Pharmaceuticals, Inc. AUSTEDO XR, BOTOX, BRIUMVI, ELIQUIS, HYQVIA, NURTEC ODT, ONPATTRO, Ocrevus, PAXLOVID, QUTENZA, ULTOMIRIS, UPLIZNA, VYEPTI, VYVGART HYTRULO, ZAVZPRET 5
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
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