Healthcare provider profile · identity verified

Grigor Matentsian, MD

Family Practice · BELLFLOWER, CA · NPI 1255402152

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 Calcium727308
Losartan PotassiumLosartan Potassium473183
Metformin HclMetformin Hcl316127
Amlodipine BesylateAmlodipine Besylate295125
Tamsulosin HclTamsulosin Hcl19392
OmeprazoleOmeprazole17690
GlipizideGlipizide17077
LisinoprilLisinopril16666
Rosuvastatin CalciumRosuvastatin Calcium15561
AtenololAtenolol15255
HydrochlorothiazideHydrochlorothiazide15164
Nano 2nd Gen Pen NeedlePen Needle, Diabetic14975
Levothyroxine SodiumLevothyroxine Sodium12448
JardianceEmpagliflozin11848
Trazodone HclTrazodone Hcl9649
Triamcinolone AcetonideTriamcinolone Acetonide9658
Metoprolol TartrateMetoprolol Tartrate9235
Terazosin HclTerazosin Hcl8940
Victoza 2-PakLiraglutide8935
GabapentinGabapentin8441
Sertraline HclSertraline Hcl7745
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide6926
Pantoprazole SodiumPantoprazole Sodium6929
Terbinafine HclTerbinafine Hcl6940
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen6822
Metformin Hcl ErMetformin Hcl6829
Hydralazine HclHydralazine Hcl6130
Humulin NInsulin Nph Human Isophane5925
FurosemideFurosemide5427
Humulin RInsulin Regular, Human5223
PradaxaDabigatran Etexilate Mesylate5222
OzempicSemaglutide5012
Humulin 70/30 KwikpenInsulin Nph Hum/Reg Insulin Hm4719
KetoconazoleKetoconazole4716
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide4718
LiraglutideLiraglutide4522
AbrysvoRsv Vacc, Pref A And Pref B/Pf4444
Duloxetine HclDuloxetine Hcl4320
FinasterideFinasteride4016
Veo Insulin SyringeSyringe And Needle,insulin,1ml4020
ClopidogrelClopidogrel Bisulfate3816
MirtazapineMirtazapine3818
CarvedilolCarvedilol3715
MeloxicamMeloxicam3735
Humulin N KwikpenInsulin Nph Human Isophane3621
Bisoprolol FumarateBisoprolol Fumarate3414
Potassium ChloridePotassium Chloride3413
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav3230
Alcohol Prep PadsAlcohol Antiseptic Pads2920
Acetaminophen-CodeineAcetaminophen With Codeine27suppressed
AllopurinolAllopurinol2613
Isosorbide Mononitrate ErIsosorbide Mononitrate2611
Pravastatin SodiumPravastatin Sodium2612
Tramadol HclTramadol Hcl26suppressed
Benazepril HclBenazepril Hcl25suppressed
Fluoxetine HclFluoxetine Hcl2511
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf2323
CefadroxilCefadroxil2323
SpironolactoneSpironolactone23suppressed
Azelastine HclAzelastine Hcl2215
Nifedipine ErNifedipine21suppressed
Wixela InhubFluticasone Propion/Salmeterol2111
Alendronate SodiumAlendronate Sodium20suppressed
Insulin Glargine-YfgnInsulin Glargine-Yfgn2016
Bupropion XlBupropion Hcl1811
Humulin 70-30Insulin Nph Hum/Reg Insulin Hm14suppressed
EliquisApixaban13suppressed
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml13suppressed
FenofibrateFenofibrate12suppressed
Spiriva RespimatTiotropium Bromide12suppressed
SucralfateSucralfate12suppressed

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