Healthcare provider profile · identity verified

Chrystal G Clamp, MD

Allopathic & Osteopathic Physicians|Internal Medicine · LUTZ, FL · NPI 1265426050

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 Chrystal G Clamp, MD received $483.49 in general payments during 2025 across 25 reported records.

Novo Nordisk Inc accounted for 29.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 19 associated products.

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

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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Linzess by this doctor in 2024.

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 26 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 18 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 FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 43 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 16 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 16 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 21 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 12 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 70 claims for Ozempic 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 Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 32 claims for Rybelsus by this doctor in 2024.

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

Payment overview · 2025

General Payments

$483.49

25 reported records · 11 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
Novo Nordisk Inc Unresolved — no canonical attribution shown $141.3829.2%62025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $74.5515.4%42025
PFIZER INC. Unresolved — no canonical attribution shown $67.7614.0%42025
Exact Sciences Corporation Unresolved — no canonical attribution shown $65.0113.4%42025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $23.384.8%12025
SI-BONE, INC. Unresolved — no canonical attribution shown $20.284.2%12025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $19.994.1%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $19.884.1%12025
ABBVIE INC. Unresolved — no canonical attribution shown $17.543.6%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $17.253.6%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $16.473.4%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$483.4925

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
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $59.79 3 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $59.79 3 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $58.40 3 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $53.20 2 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $52.05 3 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $52.05 3 2025
Source payment records
The Cologuard Plus Collection Kit
Normalized: the cologuard plus collection kit
Device Exact Sciences Corporation $47.67 3 2025
Source payment records
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $19.99 1 2025
Source payment records
CAPVAXIVE
Normalized: capvaxive
Biological Merck Sharp & Dohme LLC $19.88 1 2025
Source payment records
GARDASIL 9
Normalized: gardasil 9
Biological Merck Sharp & Dohme LLC $19.88 1 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $17.54 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $17.34 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $17.25 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $17.25 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $16.47 1 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $16.15 1 2025
Source payment records
ABRYSVO
Normalized: abrysvo
Biological PFIZER INC. $15.71 1 2025
Source payment records
COMIRNATY
Normalized: comirnaty
Biological PFIZER INC. $15.71 1 2025
Source payment records
PREVNAR 20
Normalized: prevnar 20
Biological PFIZER INC. $15.71 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 16
Beneficiary count suppressed
exact normalized Medicare Part D
LINZESS
linzess
2025 Linzess 2024 15
Beneficiary count suppressed
exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 21
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 70 exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 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 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
15 suppressed by CMS
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
26 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
18 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
43 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
16 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
16 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
21 suppressed by CMS
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
12 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
70 16
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
32 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 Calcium370128
Amlodipine BesylateAmlodipine Besylate24182
Levothyroxine SodiumLevothyroxine Sodium23080
OmeprazoleOmeprazole16763
Losartan PotassiumLosartan Potassium15255
Metoprolol SuccinateMetoprolol Succinate12243
MeloxicamMeloxicam10635
Zolpidem TartrateZolpidem Tartrate10122
ValsartanValsartan9628
Duloxetine HclDuloxetine Hcl9331
Pantoprazole SodiumPantoprazole Sodium9033
SimvastatinSimvastatin9030
Sertraline HclSertraline Hcl8332
Fluticasone PropionateFluticasone Propionate7736
Trazodone HclTrazodone Hcl7629
AlprazolamAlprazolam7337
AllopurinolAllopurinol7020
OzempicSemaglutide7016
Rosuvastatin CalciumRosuvastatin Calcium6528
CarvedilolCarvedilol6021
LisinoprilLisinopril5924
HydrochlorothiazideHydrochlorothiazide5722
Albuterol Sulfate HfaAlbuterol Sulfate5624
FurosemideFurosemide5619
Alendronate SodiumAlendronate Sodium5216
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide5020
Escitalopram OxalateEscitalopram Oxalate4917
GabapentinGabapentin4815
Pravastatin SodiumPravastatin Sodium4623
Bupropion XlBupropion Hcl4415
FamotidineFamotidine4412
Tramadol HclTramadol Hcl4411
FarxigaDapagliflozin Propanediol43suppressed
Olmesartan MedoxomilOlmesartan Medoxomil4217
Metformin Hcl ErMetformin Hcl4118
Potassium ChloridePotassium Chloride4013
Fluoxetine HclFluoxetine Hcl3815
Citalopram HbrCitalopram Hydrobromide3712
Venlafaxine Hcl ErVenlafaxine Hcl3312
Buspirone HclBuspirone Hcl32suppressed
Metformin HclMetformin Hcl3212
RybelsusSemaglutide32suppressed
Montelukast SodiumMontelukast Sodium3114
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid3111
ClopidogrelClopidogrel Bisulfate2911
EstradiolEstradiol2813
Tamsulosin HclTamsulosin Hcl28suppressed
Memantine HclMemantine Hcl26suppressed
Metoprolol TartrateMetoprolol Tartrate26suppressed
SynthroidLevothyroxine Sodium26suppressed
Sumatriptan SuccinateSumatriptan Succinate25suppressed
Hydralazine HclHydralazine Hcl24suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide2412
MirtazapineMirtazapine23suppressed
PrednisonePrednisone2314
SpironolactoneSpironolactone23suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide22suppressed
Amitriptyline HclAmitriptyline Hcl21suppressed
MounjaroTirzepatide21suppressed
Nebivolol HclNebivolol Hcl21suppressed
Nifedipine ErNifedipine21suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst2120
Verapamil ErVerapamil Hcl21suppressed
AripiprazoleAripiprazole2012
CelecoxibCelecoxib20suppressed
EzetimibeEzetimibe20suppressed
Ondansetron HclOndansetron Hcl20suppressed
Tolterodine Tartrate ErTolterodine Tartrate20suppressed
XareltoRivaroxaban20suppressed
ChlorthalidoneChlorthalidone19suppressed
ClonazepamClonazepam19suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride18suppressed
MyrbetriqMirabegron18suppressed
Propranolol Hcl ErPropranolol Hcl18suppressed
ValacyclovirValacyclovir Hcl1811
Glipizide ErGlipizide17suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen17suppressed
FluconazoleFluconazole1612
JardianceEmpagliflozin16suppressed
TopiramateTopiramate16suppressed
LinzessLinaclotide15suppressed
Tizanidine HclTizanidine Hcl1511
Azelastine HclAzelastine Hcl14suppressed
Oxybutynin Chloride ErOxybutynin Chloride14suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril13suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine13suppressed
Ondansetron OdtOndansetron13suppressed
Breo ElliptaFluticasone/Vilanterol12suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl12suppressed
LovastatinLovastatin12suppressed
MethylprednisoloneMethylprednisolone1212
PrimidonePrimidone12suppressed
TrulicityDulaglutide12suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1111
Ipratropium BromideIpratropium Bromide11suppressed
NystatinNystatin11suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide11suppressed
Paroxetine HclParoxetine Hcl11suppressed
PregabalinPregabalin11suppressed

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 $483.49 · 25 records Novo Nordisk Inc ABRYSVO, AIRSUPRA, BREZTRI, CAPVAXIVE, COMIRNATY, Cologuard Collection Kit, ELIQUIS, GARDASIL 9, JARDIANCE, LINZESS, MOUNJARO, NURTEC ODT, Ozempic, PREVNAR 20, Rybelsus, The Cologuard Plus Collection Kit, Veozah, Wegovy, ZEPBOUND 10
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