Healthcare provider profile · identity verified

Joseph Jay Baker, MD, MPH

Family Practice · BOSTON, MA · NPI 1144338138

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 Hcl25631
Atorvastatin CalciumAtorvastatin Calcium23762
GabapentinGabapentin22244
BiktarvyBictegrav/Emtricit/Tenofov Ala19224
OmeprazoleOmeprazole14631
Fluticasone PropionateFluticasone Propionate13733
Metformin Hcl ErMetformin Hcl11934
Albuterol Sulfate HfaAlbuterol Sulfate11537
Trazodone HclTrazodone Hcl11525
LisinoprilLisinopril11329
LorazepamLorazepam11131
Metoprolol SuccinateMetoprolol Succinate10524
Tamsulosin HclTamsulosin Hcl10427
Bupropion XlBupropion Hcl9919
Morphine Sulfate ErMorphine Sulfate9513
TrulicityDulaglutide9215
Amlodipine BesylateAmlodipine Besylate8821
Cyclobenzaprine HclCyclobenzaprine Hcl8712
DescovyEmtricitabine/Tenofov Alafenam84suppressed
ClonazepamClonazepam8011
OzempicSemaglutide7615
Losartan PotassiumLosartan Potassium7419
Levothyroxine SodiumLevothyroxine Sodium7117
Escitalopram OxalateEscitalopram Oxalate6816
PregabalinPregabalin68suppressed
TestosteroneTestosterone6713
FamotidineFamotidine57suppressed
Rosuvastatin CalciumRosuvastatin Calcium5715
Testosterone CypionateTestosterone Cypionate57suppressed
ValacyclovirValacyclovir Hcl5415
Zolpidem TartrateZolpidem Tartrate53suppressed
Tramadol HclTramadol Hcl5212
Fluoxetine HclFluoxetine Hcl51suppressed
FurosemideFurosemide50suppressed
HydrochlorothiazideHydrochlorothiazide5014
Pantoprazole SodiumPantoprazole Sodium5011
Ventolin HfaAlbuterol Sulfate5012
Metformin HclMetformin Hcl4913
SimvastatinSimvastatin48suppressed
EliquisApixaban4711
MounjaroTirzepatide45suppressed
SpironolactoneSpironolactone45suppressed
Triamcinolone AcetonideTriamcinolone Acetonide4515
KetoconazoleKetoconazole4215
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide41suppressed
TriumeqAbacavir/Dolutegravir/Lamivudi39suppressed
FinasterideFinasteride38suppressed
AllopurinolAllopurinol36suppressed
Ondansetron OdtOndansetron35suppressed
Ondansetron HclOndansetron Hcl34suppressed
Tizanidine HclTizanidine Hcl34suppressed
Citalopram HbrCitalopram Hydrobromide33suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine33suppressed
ArexvyRsvpref3 Antigen/As01e/Pf3130
Duloxetine HclDuloxetine Hcl31suppressed
Sertraline HclSertraline Hcl31suppressed
Combivent RespimatIpratropium/Albuterol Sulfate30suppressed
Amitriptyline HclAmitriptyline Hcl29suppressed
Bupropion Hcl SrBupropion Hcl29suppressed
LamotrigineLamotrigine29suppressed
TivicayDolutegravir Sodium29suppressed
ValsartanValsartan29suppressed
Glipizide ErGlipizide28suppressed
GenvoyaElviteg/Cob/Emtri/Tenof Alafen27suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen27suppressed
CarvedilolCarvedilol26suppressed
XareltoRivaroxaban26suppressed
ZolmitriptanZolmitriptan26suppressed
AbacavirAbacavir Sulfate25suppressed
AlprazolamAlprazolam25suppressed
Arnuity ElliptaFluticasone Furoate25suppressed
Morphine SulfateMorphine Sulfate25suppressed
FarxigaDapagliflozin Propanediol24suppressed
Labetalol HclLabetalol Hcl24suppressed
Alendronate SodiumAlendronate Sodium23suppressed
Azelastine HclAzelastine Hcl23suppressed
AzithromycinAzithromycin2319
DiazepamDiazepam23suppressed
Diclofenac SodiumDiclofenac Sodium23suppressed
Incruse ElliptaUmeclidinium Bromide23suppressed
AripiprazoleAripiprazole21suppressed
EzetimibeEzetimibe21suppressed
PrezcobixDarunavir/Cobicistat21suppressed
AcyclovirAcyclovir20suppressed
AtenololAtenolol20suppressed
LidocaineLidocaine20suppressed
Doxazosin MesylateDoxazosin Mesylate19suppressed
OdefseyEmtricitab/Rilpiviri/Tenof Ala19suppressed
Quetiapine FumarateQuetiapine Fumarate18suppressed
FentanylFentanyl17suppressed
JanuviaSitagliptin Phosphate17suppressed
NaproxenNaproxen17suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl17suppressed
DovatoDolutegravir Sodium/Lamivudine16suppressed
IbuprofenIbuprofen16suppressed
LinzessLinaclotide16suppressed
LantusInsulin Glargine,hum.Rec.Anlog15suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide15suppressed
Montelukast SodiumMontelukast Sodium15suppressed
Bupropion HclBupropion Hcl14suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog14suppressed
Oxybutynin Chloride ErOxybutynin Chloride14suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen14suppressed
Pravastatin SodiumPravastatin Sodium14suppressed
Propranolol HclPropranolol Hcl14suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim14suppressed
Sumatriptan SuccinateSumatriptan Succinate14suppressed
Amiodarone HclAmiodarone Hcl13suppressed
EtravirineEtravirine13suppressed
IsentressRaltegravir Potassium13suppressed
TriazolamTriazolam13suppressed
Carbidopa-LevodopaCarbidopa/Levodopa12suppressed
EvotazAtazanavir Sulfate/Cobicistat12suppressed
Hydroxyzine HclHydroxyzine Hcl12suppressed
Lithium CarbonateLithium Carbonate12suppressed
Pyridostigmine BromidePyridostigmine Bromide12suppressed
Buspirone HclBuspirone Hcl11suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine11suppressed
CelecoxibCelecoxib11suppressed
Fludrocortisone AcetateFludrocortisone Acetate11suppressed
NystatinNystatin11suppressed
Potassium ChloridePotassium Chloride11suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter11suppressed

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