Healthcare provider profile · identity verified

Timothy A Johnson, M.D.

Hematology-Oncology · SPRINGFIELD, MA · NPI 1801879762

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

BrandGenericClaimsBeneficiaries
Oxycodone HclOxycodone Hcl28861
LetrozoleLetrozole18151
PrednisonePrednisone11317
EliquisApixaban11124
Ondansetron HclOndansetron Hcl9445
LorazepamLorazepam9222
GabapentinGabapentin8821
DexamethasoneDexamethasone8421
Zolpidem TartrateZolpidem Tartrate6911
FentanylFentanyl6614
Morphine Sulfate ErMorphine Sulfate6611
Tamoxifen CitrateTamoxifen Citrate6516
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen56suppressed
XtandiEnzalutamide54suppressed
HydroxyureaHydroxyurea4812
CalquenceAcalabrutinib Maleate41suppressed
Abiraterone AcetateAbiraterone Acetate39suppressed
JakafiRuxolitinib Phosphate37suppressed
Lidocaine-PrilocaineLidocaine/Prilocaine3615
Tramadol HclTramadol Hcl3616
Megestrol AcetateMegestrol Acetate3113
OmeprazoleOmeprazole31suppressed
AnastrozoleAnastrozole26suppressed
Ondansetron OdtOndansetron26suppressed
HydrochlorothiazideHydrochlorothiazide25suppressed
NubeqaDarolutamide25suppressed
IbrancePalbociclib22suppressed
Erlotinib HclErlotinib Hcl21suppressed
Prochlorperazine MaleateProchlorperazine Maleate2016
Lidocaine Hcl ViscousLidocaine Hcl15suppressed
Morphine SulfateMorphine Sulfate15suppressed
BicalutamideBicalutamide14suppressed
RevlimidLenalidomide14suppressed
Hydromorphone HclHydromorphone Hcl13suppressed
Fluphenazine HclFluphenazine Hcl12suppressed
OxycontinOxycodone Hcl12suppressed
PomalystPomalidomide12suppressed
Citalopram HbrCitalopram Hydrobromide11suppressed
NaproxenNaproxen11suppressed
SprycelDasatinib11suppressed
Trazodone HclTrazodone Hcl11suppressed

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
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