Healthcare provider profile · identity verified

Christopher Michael Osan, M.D.

Allopathic & Osteopathic Physicians|Family Medicine · VALPARAISO, IN · NPI 1427477413

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 Christopher Michael Osan, M.D. received $2,884.18 in general payments during 2025 across 131 reported records.

AstraZeneca Pharmaceuticals LP accounted for 17.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 39 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga, Jardiance, Mounjaro, Trelegy Ellipta.

ABBVIE 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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Synthroid by this doctor in 2024.

Astellas Pharma 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 Myrbetriq as an associated drug or biological on 16 records involving 16 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Myrbetriq by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported BRILINTA as an associated drug or biological on 993 records involving 512 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Brilinta by this doctor in 2024.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Farxiga by this doctor in 2024.

Boehringer Ingelheim 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Jardiance by this doctor in 2024.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 32 claims for Trelegy Ellipta by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 259 claims for Mounjaro by this doctor in 2024.

Novo Nordisk 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 41 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$2,884.18

131 reported records · 27 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
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $496.6517.2%132025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $362.7612.6%142025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $296.5810.3%162025
ABBVIE INC. Unresolved — no canonical attribution shown $291.2510.1%162025
PFIZER INC. Unresolved — no canonical attribution shown $201.397.0%132025
Insulet Corporation Unresolved — no canonical attribution shown $150.005.2%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $147.595.1%92025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $102.883.6%62025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $94.013.3%52025
Esperion Therapeutics, Inc. Unresolved — no canonical attribution shown $77.952.7%42025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $63.482.2%32025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $56.351.9%32025
Boston Scientific Corporation Unresolved — no canonical attribution shown $49.681.7%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $48.941.7%32025
Lilly USA, LLC Unresolved — no canonical attribution shown $46.951.6%32025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $46.771.6%32025
Vanda Pharmaceuticals Inc. Unresolved — no canonical attribution shown $43.131.5%22025
Supernus Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $41.911.4%22025
Antares Pharma, Inc. Unresolved — no canonical attribution shown $40.671.4%22025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $36.271.3%22025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $35.461.2%22025
Abbott Laboratories Unresolved — no canonical attribution shown $32.991.1%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $32.461.1%22025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $27.090.9%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $24.830.9%12025
VERTEX PHARMACEUTICALS INCORPORATED Unresolved — no canonical attribution shown $19.060.7%12025
Azurity Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $17.080.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$2,884.18131

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
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $415.78 9 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $362.76 14 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $308.46 5 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $248.08 14 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $227.59 1 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $172.98 11 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $158.15 10 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $153.14 8 2025
Source payment records
Omnipod
Normalized: omnipod
Device Insulet Corporation $150.00 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $147.59 9 2025
Source payment records
  • 2025-02-03 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $16.20 · Open Payments source
  • 2025-03-25 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $16.26 · Open Payments source
  • 2025-04-14 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $17.96 · Open Payments source
  • 2025-05-27 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $17.01 · Open Payments source
  • 2025-06-17 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $16.13 · Open Payments source
  • 2025-06-30 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $17.03 · Open Payments source
  • 2025-08-11 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $17.08 · Open Payments source
  • 2025-09-08 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $15.66 · Open Payments source
  • 2025-11-03 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $14.26 · Open Payments source
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $119.85 8 2025
Source payment records
TRINTELLIX
Normalized: trintellix
Drug Takeda Pharmaceuticals U.S.A., Inc. $102.88 6 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $98.08 6 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $94.01 5 2025
Source payment records
NEXLETOL
Normalized: nexletol
Drug Esperion Therapeutics, Inc. $77.95 4 2025
Source payment records
Auvelity
Normalized: auvelity
Drug Axsome Therapeutics, Inc. $63.48 3 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Otsuka America Pharmaceutical, Inc. $56.35 3 2025
Source payment records
WATCHMAN FLX
Normalized: watchman flx
Device Boston Scientific Corporation $49.68 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $46.95 3 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $46.95 3 2025
Source payment records
GARDASIL 9
Normalized: gardasil 9
Biological Merck Sharp & Dohme LLC $46.77 3 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $43.24 3 2025
Source payment records
FANAPT
Normalized: fanapt
Drug Vanda Pharmaceuticals Inc. $43.13 2 2025
Source payment records
Qelbree
Normalized: qelbree
Drug Supernus Pharmaceuticals, Inc. $41.91 2 2025
Source payment records
XYOSTED
Normalized: xyosted
Drug Antares Pharma, Inc. $40.67 2 2025
Source payment records
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $36.27 2 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $35.46 2 2025
Source payment records
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $34.52 2 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $32.99 2 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $32.46 2 2025
Source payment records
ENFLONSIA
Normalized: enflonsia
Drug Merck Sharp & Dohme LLC $31.08 2 2025
Source payment records
OFEV
Normalized: ofev
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $27.65 1 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $27.09 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $24.83 1 2025
Source payment records
JOURNAVX
Normalized: journavx
Drug VERTEX PHARMACEUTICALS INCORPORATED $19.06 1 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $18.77 1 2025
Source payment records
CAPVAXIVE
Normalized: capvaxive
Biological Merck Sharp & Dohme LLC $15.69 1 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $14.42 1 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $14.42 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
FARXIGA
farxiga
2025 Farxiga 2024 20
Beneficiary count suppressed
exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 29
Beneficiary count suppressed
exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 259 exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 32
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
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
19 suppressed by CMS
Astellas Pharma US Inc
Exact reporting entity; no affiliate inference
2025 Myrbetriq
open payments reported associated product
CMS Open Payments — General Payments
16 supporting records · 16 recipient NPIs · example record 1238599014
Myrbetriq · 2024
Exact normalized brand match · 1 Part D row
14 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 BRILINTA
open payments reported associated product
CMS Open Payments — General Payments
993 supporting records · 512 recipient NPIs · example record 1206131430
Brilinta · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
20 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
29 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
32 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
29 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
259 44
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
41 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
Atorvastatin CalciumAtorvastatin Calcium413118
MounjaroTirzepatide25944
Amlodipine BesylateAmlodipine Besylate21263
Levothyroxine SodiumLevothyroxine Sodium18851
Metformin Hcl ErMetformin Hcl15749
LisinoprilLisinopril15142
Pantoprazole SodiumPantoprazole Sodium14945
Losartan PotassiumLosartan Potassium13645
Metoprolol SuccinateMetoprolol Succinate13233
Rosuvastatin CalciumRosuvastatin Calcium11734
Sertraline HclSertraline Hcl10341
Montelukast SodiumMontelukast Sodium8428
Tamsulosin HclTamsulosin Hcl8427
Metformin HclMetformin Hcl7723
Escitalopram OxalateEscitalopram Oxalate7425
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide7121
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide7016
CelecoxibCelecoxib6413
HydrochlorothiazideHydrochlorothiazide5521
AllopurinolAllopurinol5315
OmeprazoleOmeprazole4515
MeloxicamMeloxicam43suppressed
FamotidineFamotidine4213
ClopidogrelClopidogrel Bisulfate4111
Fluticasone PropionateFluticasone Propionate4116
OzempicSemaglutide41suppressed
GabapentinGabapentin4015
Pioglitazone HclPioglitazone Hcl4013
Albuterol Sulfate HfaAlbuterol Sulfate3918
Trazodone HclTrazodone Hcl3912
Ropinirole HclRopinirole Hcl34suppressed
Amitriptyline HclAmitriptyline Hcl3311
Trelegy ElliptaFluticasone/Umeclidin/Vilanter32suppressed
Metoprolol TartrateMetoprolol Tartrate30suppressed
Potassium ChloridePotassium Chloride30suppressed
Venlafaxine Hcl ErVenlafaxine Hcl30suppressed
XareltoRivaroxaban30suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol29suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen2918
JardianceEmpagliflozin29suppressed
Synjardy XrEmpagliflozin/Metformin Hcl29suppressed
PregabalinPregabalin28suppressed
CarvedilolCarvedilol27suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl2713
FurosemideFurosemide2713
Xigduo XrDapaglifloz Propaned/Metformin26suppressed
Duloxetine HclDuloxetine Hcl25suppressed
AzithromycinAzithromycin2321
TelmisartanTelmisartan23suppressed
Citalopram HbrCitalopram Hydrobromide22suppressed
IrbesartanIrbesartan22suppressed
Pravastatin SodiumPravastatin Sodium22suppressed
Buspirone HclBuspirone Hcl21suppressed
Ondansetron OdtOndansetron21suppressed
PrednisonePrednisone2120
Enalapril MaleateEnalapril Maleate20suppressed
FarxigaDapagliflozin Propanediol20suppressed
FinasterideFinasteride19suppressed
Nortriptyline HclNortriptyline Hcl19suppressed
RamiprilRamipril19suppressed
SynthroidLevothyroxine Sodium19suppressed
ValsartanValsartan19suppressed
MirtazapineMirtazapine18suppressed
MupirocinMupirocin1811
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid17suppressed
AtenololAtenolol16suppressed
EzetimibeEzetimibe16suppressed
SimvastatinSimvastatin16suppressed
Tizanidine HclTizanidine Hcl16suppressed
Bupropion XlBupropion Hcl15suppressed
Diclofenac SodiumDiclofenac Sodium15suppressed
LorazepamLorazepam15suppressed
Memantine HclMemantine Hcl15suppressed
Olmesartan MedoxomilOlmesartan Medoxomil15suppressed
Soliqua 100-33Insulin Glargine/Lixisenatide15suppressed
AlprazolamAlprazolam14suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1413
MyrbetriqMirabegron14suppressed
SpironolactoneSpironolactone14suppressed
Varenicline TartrateVarenicline Tartrate14suppressed
Arnuity ElliptaFluticasone Furoate13suppressed
Alendronate SodiumAlendronate Sodium12suppressed
Nebivolol HclNebivolol Hcl12suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1212
Spiriva RespimatTiotropium Bromide12suppressed
BrilintaTicagrelor11suppressed
NaproxenNaproxen11suppressed
Omnipod Dash Pods (Gen 4)Insulin Pump Cart,cont Inf,bt11suppressed
Solifenacin SuccinateSolifenacin Succinate11suppressed
Zolpidem TartrateZolpidem Tartrate11suppressed

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 $2,884.18 · 131 records AstraZeneca Pharmaceuticals LP AIRSUPRA, AREXVY, Auvelity, BREZTRI, CAPLYTA, CAPVAXIVE, CREON, Cologuard Collection Kit, ENFLONSIA, FANAPT, FARXIGA, FREESTYLE LIBRE 3, GARDASIL 9, JARDIANCE, JOURNAVX, Kerendia, LEQVIO, MOUNJARO, NEXLETOL, NURTEC ODT, OFEV, Omnipod, PAXLOVID, QULIPTA, Qelbree, REXULTI, SHINGRIX, TRELEGY ELLIPTA, TRINTELLIX, UBRELVY, VOQUEZNA, VRAYLAR, Veozah, WATCHMAN FLX, Wegovy, XIFAXAN, XYOSTED, ZAVZPRET, ZEPBOUND 9
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