Healthcare provider profile · identity verified

Chi Tang, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · ANSONIA, CT · NPI 1013263870

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 Chi Tang, MD received $968.51 in general payments during 2025 across 45 reported records.

Lilly USA, LLC accounted for 12.6% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 33 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Jardiance, Mounjaro, Ozempic, Teriparatide, Unithroid.

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 77 claims for Synthroid by this doctor in 2024.

Amneal Pharmaceuticals 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 UNITHROID as an associated drug or biological on 7282 records involving 3230 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Unithroid 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 145 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 145 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 146 claims for Mounjaro 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 TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 419 claims for Trulicity 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 Fiasp as an associated drug or biological on 15 records involving 15 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Fiasp 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 157 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

$968.51

45 reported records · 26 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
Lilly USA, LLC Unresolved — no canonical attribution shown $122.1412.6%72025
CeQur Corporation Unresolved — no canonical attribution shown $82.858.6%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $67.166.9%42025
Antares Pharma, Inc. Unresolved — no canonical attribution shown $56.835.9%22025
Amgen Inc. Unresolved — no canonical attribution shown $55.535.7%32025
Abbott Laboratories Unresolved — no canonical attribution shown $54.495.6%32025
Ascendis Pharma Endocrinology Inc Unresolved — no canonical attribution shown $48.025.0%22025
BETA BIONICS, INC. Unresolved — no canonical attribution shown $41.234.3%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $39.704.1%22025
Acella Pharmaceuticals, LLC Unresolved — no canonical attribution shown $39.274.0%22025
SANOFI-AVENTIS U.S. LLC Unresolved — no canonical attribution shown $34.583.6%22025
Tandem Diabetes Care, Inc. Unresolved — no canonical attribution shown $33.943.5%12025
Radius Health, Inc. Unresolved — no canonical attribution shown $29.253.0%12025
Amneal Pharmaceuticals LLC Unresolved — no canonical attribution shown $27.662.9%12025
IBSA Pharma Inc. Unresolved — no canonical attribution shown $24.652.5%12025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$24.112.5%12025
Xeris Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $23.692.5%12025
Dexcom, Inc. Unresolved — no canonical attribution shown $23.352.4%12025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $21.422.2%12025
Insulet Corporation Unresolved — no canonical attribution shown $20.662.1%12025
ABBVIE INC. Unresolved — no canonical attribution shown $20.482.1%12025
Sequel Med Tech, LLC Unresolved — no canonical attribution shown $20.032.1%12025
Almatica Pharma LLC Unresolved — no canonical attribution shown $15.361.6%12025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $14.451.5%12025
Amphastar Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $14.111.5%12025
Averitas Pharma Inc. Unresolved — no canonical attribution shown $13.551.4%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$968.5145

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
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc., Lilly USA, LLC $120.22 8 2025
Source payment records
CeQur Simplicity
Normalized: cequr simplicity
Device CeQur Corporation $82.85 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $69.08 3 2025
Source payment records
XYOSTED
Normalized: xyosted
Drug Antares Pharma, Inc. $56.83 2 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $55.53 3 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $54.49 3 2025
Source payment records
Yorvipath
Normalized: yorvipath
Drug Ascendis Pharma Endocrinology Inc $48.02 2 2025
Source payment records
iLet Bionic Pancreas
Normalized: ilet bionic pancreas
Device BETA BIONICS, INC. $41.23 2 2025
Source payment records
iLet Insulin Infusion Kit Contact Detach
Normalized: ilet insulin infusion kit contact detach
Device BETA BIONICS, INC. $41.23 2 2025
Source payment records
iLet Insulin Infusion Kit Inset
Normalized: ilet insulin infusion kit inset
Device BETA BIONICS, INC. $41.23 2 2025
Source payment records
NP Thyroid 60
Normalized: np thyroid 60
Drug Acella Pharmaceuticals, LLC $39.27 2 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $38.08 2 2025
Source payment records
TZIELD
Normalized: tzield
Biological SANOFI-AVENTIS U.S. LLC $34.58 2 2025
Source payment records
t:slim X2 Insulin Pump with Control-IQ
Normalized: t slim x2 insulin pump with control iq
Device Tandem Diabetes Care, Inc. $33.94 1 2025
Source payment records
Tymlos
Normalized: tymlos
Drug Radius Health, Inc. $29.25 1 2025
Source payment records
UNITHROID
Normalized: unithroid
Drug Amneal Pharmaceuticals LLC $27.66 1 2025
Source payment records
Flector
Normalized: flector
Drug IBSA Pharma Inc. $24.65 1 2025
Source payment records
Licart
Normalized: licart
Drug IBSA Pharma Inc. $24.65 1 2025
Source payment records
Tirosint
Normalized: tirosint
Drug IBSA Pharma Inc. $24.65 1 2025
Source payment records
MINIMED 780G
Normalized: minimed 780g
Device Medtronic, Inc. $24.11 1 2025
Source payment records
GVOKE HYPOPEN
Normalized: gvoke hypopen
Drug Xeris Pharmaceuticals, Inc. $23.69 1 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $23.36 1 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $23.35 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $21.54 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $21.54 1 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $21.42 1 2025
Source payment records
Omnipod
Normalized: omnipod
Device Insulet Corporation $20.66 1 2025
Source payment records
TWIIST
Normalized: twiist
Device Sequel Med Tech, LLC $20.03 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $18.16 1 2025
Source payment records
TERIPARATIDE
Normalized: teriparatide
Drug Almatica Pharma LLC $15.36 1 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $14.45 1 2025
Source payment records
BAQSIMI
Normalized: baqsimi
Drug Amphastar Pharmaceuticals, Inc. $14.11 1 2025
Source payment records
QUTENZA
Normalized: qutenza
Drug Averitas Pharma Inc. $13.55 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
JARDIANCE
jardiance
2025 Jardiance 2024 145 exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 146 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 157 exact normalized Medicare Part D
TERIPARATIDE
teriparatide
2025 Teriparatide 2024 27
Beneficiary count suppressed
exact normalized Medicare Part D
UNITHROID
unithroid
2025 Unithroid 2024 20
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
77 22
Amneal Pharmaceuticals LLC
Exact reporting entity; no affiliate inference
2025 UNITHROID
open payments reported associated product
CMS Open Payments — General Payments
7282 supporting records · 3230 recipient NPIs · example record 1220525525
Unithroid · 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
145 35
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
145 35
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
146 40
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
419 94
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Fiasp
open payments reported associated product
CMS Open Payments — General Payments
15 supporting records · 15 recipient NPIs · example record 1188262936
Fiasp · 2024
Exact normalized brand match · 1 Part D row
13 suppressed by CMS
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
157 39

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
Levothyroxine SodiumLevothyroxine Sodium445118
TrulicityDulaglutide41994
Alendronate SodiumAlendronate Sodium30792
Metformin HclMetformin Hcl27878
OzempicSemaglutide15739
MounjaroTirzepatide14640
JardianceEmpagliflozin14535
Atorvastatin CalciumAtorvastatin Calcium14340
Lantus SolostarInsulin Glargine,hum.Rec.Anlog14046
GlipizideGlipizide13440
Nano 2nd Gen Pen NeedlePen Needle, Diabetic11444
Pioglitazone HclPioglitazone Hcl10430
Metformin Hcl ErMetformin Hcl8923
SynthroidLevothyroxine Sodium7722
LisinoprilLisinopril5715
FarxigaDapagliflozin Propanediol4714
TestosteroneTestosterone38suppressed
MethimazoleMethimazole3712
Tresiba Flextouch U-100Insulin Degludec3512
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic3413
HydrocortisoneHydrocortisone32suppressed
Omnipod 5 Dexg7g6 Pods (Gen 5)Insulin Pump Cart,auto,bt,g6/732suppressed
Insulin Lispro Kwikpen U-100Insulin Lispro3112
Tresiba Flextouch U-200Insulin Degludec31suppressed
Losartan PotassiumLosartan Potassium30suppressed
Humalog Kwikpen U-100Insulin Lispro2712
TeriparatideTeriparatide27suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog2611
Liothyronine SodiumLiothyronine Sodium26suppressed
GlimepirideGlimepiride25suppressed
Humalog Mix 50-50 KwikpenInsulin Lispro Protamin/Lispro24suppressed
RepaglinideRepaglinide24suppressed
Rosuvastatin CalciumRosuvastatin Calcium23suppressed
Novolog FlexpenInsulin Aspart22suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog22suppressed
TradjentaLinagliptin21suppressed
UnithroidLevothyroxine Sodium20suppressed
Testosterone CypionateTestosterone Cypionate19suppressed
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic19suppressed
PregabalinPregabalin18suppressed
LyumjevInsulin Lispro-Aabc15suppressed
Glipizide ErGlipizide14suppressed
HumalogInsulin Lispro14suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic14suppressed
FiaspInsulin Aspart (Niacinamide)13suppressed
ForteoTeriparatide12suppressed

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 $968.51 · 45 records Lilly USA, LLC BAQSIMI, CeQur Simplicity, Dexcom G6 Transmitter, EVENITY, FREESTYLE LIBRE 3, Flector, GVOKE HYPOPEN, JARDIANCE, LEQVIO, Licart, MINIMED 780G, MOUNJARO, NP Thyroid 60, Omnipod, Ozempic, PROLIA, QUTENZA, REZDIFFRA, Rybelsus, TERIPARATIDE, TWIIST, TZIELD, Tirosint, Tymlos, UNITHROID, Wegovy, XYOSTED, Yorvipath, ZEPBOUND, iLet Bionic Pancreas, iLet Insulin Infusion Kit Contact Detach, iLet Insulin Infusion Kit Inset, t:slim X2 Insulin Pump with Control-IQ 8
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