Healthcare provider profile · identity verified

Ulka Nitin Vaishampayan, MD

Allopathic & Osteopathic Physicians|Internal Medicine · ANN ARBOR, MI · NPI 1659318640

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 Ulka Nitin Vaishampayan, MD received $70,927.41 in general payments during 2025 across 68 reported records.

E.R. Squibb & Sons, L.L.C. accounted for 34.7% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 13 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Cabometyx, Fotivda, Nubeqa, Xtandi.

Aveo 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 FOTIVDA as an associated drug or biological on 6531 records involving 3922 distinct recipient NPIs. Public Medicare Part D data also shows 33 claims for Fotivda by this doctor in 2024.

Bayer Healthcare 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 Nubeqa as an associated drug or biological on 24369 records involving 9557 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Nubeqa by this doctor in 2024.

E.R. Squibb & Sons, L.L.C. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 27956 records involving 14870 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Eliquis by this doctor in 2024.

Exelixis 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 CABOMETYX as an associated drug or biological on 11749 records involving 4526 distinct recipient NPIs. Public Medicare Part D data also shows 85 claims for Cabometyx by this doctor in 2024.

Merck Sharp & Dohme 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 LENVIMA as an associated drug or biological on 66 records involving 58 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Lenvima by this doctor in 2024.

Merck Sharp & Dohme 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 WELIREG as an associated drug or biological on 8369 records involving 5216 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Welireg by this doctor in 2024.

PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 19 claims for Eliquis by this doctor in 2024.

PFIZER 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 INLYTA as an associated drug or biological on 2646 records involving 1964 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Inlyta by this doctor in 2024.

PFIZER 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 XTANDI as an associated drug or biological on 19368 records involving 7657 distinct recipient NPIs. Public Medicare Part D data also shows 31 claims for Xtandi by this doctor in 2024.

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

Payment overview · 2025

General Payments

$70,927.41

68 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
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $24,613.5034.7%242025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $17,685.6524.9%102025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $10,653.5415.0%62025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $9,303.5913.1%132025
PFIZER INC. Unresolved — no canonical attribution shown $3,234.844.6%52025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $2,240.003.2%12025
Exelixis Inc. Unresolved — no canonical attribution shown $2,212.293.1%42025
Daiichi Sankyo Inc. Unresolved — no canonical attribution shown $650.000.9%12025
Aveo Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $216.990.3%22025
Tempus AI, Inc Unresolved — no canonical attribution shown $73.760.1%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $43.250.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Consulting Fee$60,747.0518
Travel and Lodging$6,609.8622
Honoraria$1,980.001
Food and Beverage$1,385.7924
Education$143.242
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$61.471

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
Nubeqa
Normalized: nubeqa
Drug Bayer Healthcare Pharmaceuticals Inc. $10,653.54 6 2025
Source payment records
PLUVICTO
Normalized: pluvicto
Drug Novartis Pharmaceuticals Corporation $9,947.52 5 2025
Source payment records
ERLEADA
Normalized: erleada
Drug Janssen Biotech, Inc. $9,303.59 13 2025
Source payment records
AKEEGA
Normalized: akeega
Drug Janssen Biotech, Inc. $7,916.09 12 2025
Source payment records
TALZENNA
Normalized: talzenna
Drug PFIZER INC. $3,234.84 5 2025
Source payment records
CABOMETYX
Normalized: cabometyx
Drug Exelixis Inc. $2,212.29 4 2025
Source payment records
Vanflyta
Normalized: vanflyta
Drug Daiichi Sankyo Inc. $650.00 1 2025
Source payment records
FOTIVDA
Normalized: fotivda
Drug Aveo Pharmaceuticals, Inc. $216.99 2 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug PFIZER INC. $120.85 1 2025
Source payment records
PADCEV
Normalized: padcev
Biological PFIZER INC. $120.85 1 2025
Source payment records
XTANDI
Normalized: xtandi
Drug PFIZER INC. $120.85 1 2025
Source payment records
XT CDX
Normalized: xt cdx
Device Tempus AI, Inc $73.76 1 2025
Source payment records
ENHERTU
Normalized: enhertu
Biological AstraZeneca Pharmaceuticals LP $43.25 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
CABOMETYX
cabometyx
2025 Cabometyx 2024 85 exact normalized Medicare Part D
FOTIVDA
fotivda
2025 Fotivda 2024 33
Beneficiary count suppressed
exact normalized Medicare Part D
Nubeqa
nubeqa
2025 Nubeqa 2024 24
Beneficiary count suppressed
exact normalized Medicare Part D
XTANDI
xtandi
2025 Xtandi 2024 31
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
Aveo Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 FOTIVDA
open payments reported associated product
CMS Open Payments — General Payments
6531 supporting records · 3922 recipient NPIs · example record 1199896322
Fotivda · 2024
Exact normalized brand match · 1 Part D row
33 suppressed by CMS
Bayer Healthcare Pharmaceuticals Inc.
Exact reporting entity; no affiliate inference
2025 Nubeqa
open payments reported associated product
CMS Open Payments — General Payments
24369 supporting records · 9557 recipient NPIs · example record 1225434669
Nubeqa · 2024
Exact normalized brand match · 1 Part D row
24 suppressed by CMS
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
27956 supporting records · 14870 recipient NPIs · example record 1184377713
Eliquis · 2024
Exact normalized brand match · 1 Part D row
19 suppressed by CMS
Exelixis Inc.
Exact reporting entity; no affiliate inference
2025 CABOMETYX
open payments reported associated product
CMS Open Payments — General Payments
11749 supporting records · 4526 recipient NPIs · example record 1218789893
Cabometyx · 2024
Exact normalized brand match · 1 Part D row
85 20
Merck Sharp & Dohme LLC
Exact reporting entity; no affiliate inference
2025 LENVIMA
open payments reported associated product
CMS Open Payments — General Payments
66 supporting records · 58 recipient NPIs · example record 1237995778
Lenvima · 2024
Exact normalized brand match · 1 Part D row
17 suppressed by CMS
Merck Sharp & Dohme LLC
Exact reporting entity; no affiliate inference
2025 WELIREG
open payments reported associated product
CMS Open Payments — General Payments
8369 supporting records · 5216 recipient NPIs · example record 1237992280
Welireg · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
19 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 INLYTA
open payments reported associated product
CMS Open Payments — General Payments
2646 supporting records · 1964 recipient NPIs · example record 1228795917
Inlyta · 2024
Exact normalized brand match · 1 Part D row
24 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 XTANDI
open payments reported associated product
CMS Open Payments — General Payments
19368 supporting records · 7657 recipient NPIs · example record 1228794230
Xtandi · 2024
Exact normalized brand match · 1 Part D row
31 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
PrednisonePrednisone10143
CabometyxCabozantinib S-Malate8520
Abiraterone AcetateAbiraterone Acetate52suppressed
BicalutamideBicalutamide5111
Oxycodone HclOxycodone Hcl3613
Levothyroxine SodiumLevothyroxine Sodium3512
Morphine Sulfate ErMorphine Sulfate3411
FotivdaTivozanib Hcl33suppressed
XtandiEnzalutamide31suppressed
HydrocortisoneHydrocortisone26suppressed
Ondansetron HclOndansetron Hcl2513
InlytaAxitinib24suppressed
NubeqaDarolutamide24suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen2314
DexamethasoneDexamethasone22suppressed
Amlodipine BesylateAmlodipine Besylate20suppressed
EliquisApixaban19suppressed
AlprazolamAlprazolam17suppressed
LenvimaLenvatinib Mesylate17suppressed
GabapentinGabapentin16suppressed
Tramadol HclTramadol Hcl16suppressed
WeliregBelzutifan16suppressed
EverolimusEverolimus13suppressed
Fludrocortisone AcetateFludrocortisone Acetate12suppressed
NystatinNystatin11suppressed

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 $70,927.41 · 68 records E.R. Squibb & Sons, L.L.C. AKEEGA, CABOMETYX, ENHERTU, ERLEADA, FOTIVDA, Nubeqa, ORGOVYX, PADCEV, PLUVICTO, TALZENNA, Vanflyta, XT CDX, XTANDI 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