Healthcare provider profile · identity verified

Tammy Lin

Family Practice · GRESHAM, OR · NPI 1508229303

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
Atorvastatin CalciumAtorvastatin Calcium267106
Losartan PotassiumLosartan Potassium14561
Levothyroxine SodiumLevothyroxine Sodium12841
Rosuvastatin CalciumRosuvastatin Calcium12660
LisinoprilLisinopril12246
Amlodipine BesylateAmlodipine Besylate11651
OmeprazoleOmeprazole9341
Metformin HclMetformin Hcl9135
HydrochlorothiazideHydrochlorothiazide7333
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide6938
GabapentinGabapentin6828
AtenololAtenolol6224
Alendronate SodiumAlendronate Sodium5826
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen5823
Potassium ChloridePotassium Chloride5822
SimvastatinSimvastatin4922
FurosemideFurosemide4516
PradaxaDabigatran Etexilate Mesylate4414
Trazodone HclTrazodone Hcl4422
LorazepamLorazepam4113
Triamcinolone AcetonideTriamcinolone Acetonide4023
Albuterol Sulfate HfaAlbuterol Sulfate3925
CarvedilolCarvedilol3811
EliquisApixaban37suppressed
Metoprolol TartrateMetoprolol Tartrate3718
GlipizideGlipizide3620
Pantoprazole SodiumPantoprazole Sodium3520
Terazosin HclTerazosin Hcl35suppressed
MeloxicamMeloxicam3322
Fluoxetine HclFluoxetine Hcl32suppressed
Tamsulosin HclTamsulosin Hcl3118
FamotidineFamotidine30suppressed
JardianceEmpagliflozin3014
TemazepamTemazepam30suppressed
OzempicSemaglutide29suppressed
Pravastatin SodiumPravastatin Sodium2912
Azelastine HclAzelastine Hcl28suppressed
Ipratropium BromideIpratropium Bromide2817
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide2513
IbuprofenIbuprofen2411
Metformin Hcl ErMetformin Hcl2412
EzetimibeEzetimibe23suppressed
Fluticasone PropionateFluticasone Propionate2213
Montelukast SodiumMontelukast Sodium22suppressed
Bisoprolol FumarateBisoprolol Fumarate2112
MirtazapineMirtazapine20suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen20suppressed
Sertraline HclSertraline Hcl20suppressed
ShingrixVaricella-Zoster Ge/As01b/Pf20suppressed
Wixela InhubFluticasone Propion/Salmeterol20suppressed
Hydralazine HclHydralazine Hcl19suppressed
AllopurinolAllopurinol17suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl16suppressed
Gavilyte-CPeg3350/Sod Sulf,bicarb,cl/Kcl1615
Spiriva RespimatTiotropium Bromide16suppressed
AcyclovirAcyclovir15suppressed
Humulin N KwikpenInsulin Nph Human Isophane14suppressed
Morphine SulfateMorphine Sulfate14suppressed
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf1313
FinasterideFinasteride13suppressed
Tramadol HclTramadol Hcl13suppressed
FenofibrateFenofibrate12suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic12suppressed
PregabalinPregabalin12suppressed
GlimepirideGlimepiride11suppressed
Naltrexone HclNaltrexone Hcl11suppressed
TriazolamTriazolam11suppressed

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